EFTA00287165.pdf

9 East 71st Street: Comprehensive Energy Assessment 9 E 71St St. New York, NY 10021 Report submitted by: SourceOnc SourceOne, Inc. 1 7 Penn Plaza I New York, NY 10001 1 P BOSTON EFTA00287165 SourceOne January 24, 2011 Richard J. Barnett Property Manager 9 E 71st St. New York, NY 10021 Re: 9 East 71' Street Comprehensive Energy Assessment Executive Summary SourceOne Project Number 11-005 Dear Mr. Barnett: On December 23nd, 2010 SourceOne performed a walkthrough audit of the private residence located at 9 E 7151 St. in Manhattan, NY. Representatives of SourceOne have: • Conducted a facility walkthrough. • Conducted interviews and met with representatives of the facility. • Identified Energy Conservation Measures (ECMs) that will conserve energy. • Identified potential ECMs that cannot be financial justified. Executive Summary: SourceOne recommends the implementation of the following ECMs: 1. SI-ECM-1: Motor Upgrades Annual Energy Savings: 24,399 kWh ($4,626) Simple Payback: 1.18 years 2. SI-ECM-2: Backroom Lighting Upgrades Annual Energy Savings: 13,419 kWh ($2,544) Simple Payback: 3.34 years 3. SI-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors Annual Energy Savings: 21,276 kWh ($4,034) Simple Payback: 9.74 years 4. SI-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger Annual Energy Savings: 17 Mlbs of steam ($602) Simple Payback: 6.39 years 5. SI-ECM-5: Installation of a Free-Cooling Heat Exchanger Annual Energy Savings: 52,252 kWh ($9,906) Simple Payback: 3.09 years 6. SI-ECM-6: Installation of an Additional Multistack Chiller Annual Energy Savings: 38,650 kWh ($7,328) Simple Payback: 11.98 years Seven Penn Plaza • New York, NY 10001 • EFTA00287166 HBRK Associates Inc. January 24, 2011 9 East 71' Street - Comprehensive Energy Assessment Page 2 Relative to the annual electric consumption of 853,740 kWh for 9 E 7V' St., these ECMs represent a 21% energy savings and have a collective payback of 6.06 years. In addition to these six (6) ECMs, SourceOne has identified a potential energy conservation initiative whose enactment may benefit 9 E 71g St. but which cannot be easily justified financially. It is as follows: I. SI-ECM-7: Elevator Motor SCR Conversion Annual Energy Savings: 21,724 kWh of electricity ($4,119) Simple Payback: 30.36 years As will be described in detail in this report, each one of these initiatives could bring about substantial energy savings individually and as a collective whole. Facility Overview: The facility in question, 9 E 71g St., is a private residence located between 5'h Ave. and Madison Ave. on 71g St. in the upper east side of Manhattan. It has six (6) floors with approximately 30,000 ft2 of space. Although the building is a private residence, there is a year round staff charged with cooking, cleaning and providing security. Members of the staff also maintain the heating and cooling systems in the building. Energy Usage: The facility's current annual energy usage and costs include: • Electric o Usage - 814,110kWh o Cost - $154,307 o Rate - $0.190/kWh • Steam o Usage - 2,875 Mlbs o Cost - $99,069 o Rate - $34.24/Mlbs • Natural Gas o Usage - 51 MMBTU o Cost - $1,067 o Rate - $20.99/MMBTU • Energy Utilization Index (EUI): 204 kBTU/ft2 Electricity, gas and steam are all purchased from Consolidated Edison. Seven Penn Plaza • New York, NY 10001 • EFTA00287167 HBRK Associates Inc. 9 East 71" Street - Comprehensive Energy Assessment HVAC System: January 24, 2011 Page 3 The heating, cooling and ventilation of the building at 9 E 71' St. is carried out by three main air handler units (AHUs). Two of them are located in the basement and the third is in the penthouse. Each AHU has a single speed supply fan that is powered by a 7.5 HP electric motor and contains heating and cooling coils. Heating: The facility accepts high pressure steam from Consolidated Edison and steps it down to low pressure steam before circulating it through steam/hot water heat exchangers. The water that is heated by these heat exchangers is pumped through the heating coils of the AHUs by two (2) hot water pumps located in the basement. In the AHUs, ambient air is blown across the heating coil which transfers heat from the heated water to the ambient air. The air is circulated through the conditioned space to provide heating. Cooling: A 30-ton, water cooled Multistack scroll type chiller and a much older 40-ton Carrier chiller, both located in the basement, are used to accomplish cooling. These are shown in the photos below. Photo 1: Multistack Chiller Seven Penn Plaza • New York, NY 10001 • EFTA00287168 HBRK Associates Inc. 9 East 71" Street - Comprehensive Energy Assessment Photo 2: Corner Chiller January 24, 2011 Page 4 Figure 1 below depicts the common components comprising a water cooled chiller system. COPOGIO.00 TRACE RERAN ORE GERARD WATER RM NR WO VNIT CI. Lill, VASTRR EIRERRGRIMEMaii 6,•1a WIRICOGUMG Tong EVAPORATOR COMMNOA C GOl Eq•'.m V** GUM! Olt OAT NEIR, OTRIR Figure 1: Water Cooled Chiller System w , fl WATER PUMP 1 INAIPCOAIME COOLING TOMB, As can be seen from the illustration, there are three main components to the water cooled chiller system. These are the AHU, the chiller and the cooling tower. The chiller itself contains the compressor, the condenser, the expansion valve, and the evaporator. In the first stage of the refrigeration cycle, refrigerant enters the compressor as a low pressure gas and is pressurized by the compressor into a hot, high pressure gas. The high pressure gas leaves the compressor and is circulated to the condenser. In the condenser, the high pressure gas is cooled via a heat exchanger with the condenser water, which causes it to condense into a hot liquid. The hot liquid refrigerant then proceeds through an expansion valve, which decreases the pressure of the refrigerant, causing it to cool. The cool refrigerant is then circulated to an evaporator. In the evaporator, the refrigerant accepts heat from the chilled water, causing it to vaporize into a low pressure gaseous state. The AHU contains coils through which chilled water is circulated. These coils absorb heat from ambient air (chilling it) which is circulated through the conditioned space to accomplish cooling. The cooling tower (located on the roof) cools the condenser water through evaporative cooling. The condenser and chilled water pumps are all located in the basement. The HVAC system runs 24 hours a day 365 days a year to keep the building owner and staff at a comfortable temperature. Seven Penn Plaza • New York, NY 10001 • EFTA00287169 HBRK Associates Inc. 9 East 71°' Street - Comprehensive Energy Assessment Electric Utility: January 24, 2011 Page 5 Consolidated Edison supplies electricity via a three phase, 208 volt bolted pressure switch that has 1000A fuses. There is no submetering as the entire building's electric usage is billed through one account. The sole Consolidated Edison meter is located in the basement. Photo 3: Consolidated Edison Meter In NYC electricity is supplied by third party Energy Service Companies. These companies charge for the electric supply, and Consolidated Edison charges fees for the delivery of that electricity. Consolidated Edison charges 9 E 71' St. for electrical delivery according to their EL9 rate. This rate is assigned to customers who are expected to have a monthly demand greater than 10 kW. The demand at 9 E 71' St. is well over 10 kW. Rate EL1 is the only other electric rate for which 9 E 7O St. could qualify. ELI is described as being used for customers who use electricity for general uses in an apartment or home. The EL9 rate has a higher monthly delivery charge than EL1 and charges per kW (which ELI does not) but has a much lower kWh charge than ELI does. Because of these differences in charges and the high demand and energy usage of 9 E 71° St., the delivery charges using ELI would be higher than that of EL9. A comparison of the delivery charges between the two rates (not including taxes and other surcharges) using average monthly energy usage and demand is included on the following page. Seven Penn Plaza • New York, NY 10001 • EFTA00287170 HBRK Associates Inc. January 24, 2011 9 East 71m Street - Comprehensive Energy Assessment Page 6 Lighting: Monthly Average kW kWh 132.7304 67,607 Comparison of ELI and EL9 Delivery Rates EL1 EL9 Monthly $15.76 Monthly $81.71 kWh under 250 $0.07 kW over 5 under 100 $19.97 kWh over 250 $0.08 kW over 100 $19.15 meter charges $21.42 kWh $0.02 meter charges $8.16 monthly total $5,678.84 monthly total $4,006.51 Table 1: Comparison of ELI and EL9 Delivery Rates The living spaces of the building are lit with a wide variety of lamps, chandeliers, candelabras and wall/ceiling mounted fixtures. Most of them bear decorative or aesthetic appeal and will not be changed for the sake of efficiency. The basement and backroom areas, however, are lit mostly by fluorescent light fixtures as well as some floodlights and incandescent fixtures. The fluorescent light fixtures are a combination of 4 ft, 2-lamp, linear T12 light fixtures and 2 ft, 2- lamp, U-tube T12 light fixtures. Vertical Transportation: There is one passenger elevator in the building that is used by the building owner as well as guests and staff. It is a cable-driven elevator operated by a DC motor that is powered by a motor generator set. There is also one hydraulic freight elevator. SourceOne Recommended Energy Efficiency Measures: SourceOne has identified six (6) major energy efficiency measures that can be enacted at 9 East 71' St. They are as follows: 1. S 1-ECM-1: Motor Upgrades 2. S 1-ECM-2: Backroom Lighting Upgrades 3. SI-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors 4. SI-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger 5. SI-ECM-5: Installation of a Free-Cooling Heat Exchanger 6. SI-ECM-6: Installation of an Additional Multistack Chiller The appendix of this report contains the spreadsheet analysis evaluating each of these ECMs. The annual savings, material cost, labor cost, and simple payback is calculated for each ECM individually as well as for the collective whole. Seven Penn Plaza • New York, NY 10001 • EFTA00287171 HBRK Associates Inc. 9 East 71" Street - Comprehensive Energy Assessment S I -ECM-1: Motor Upgrades January 24, 2011 Page 7 Electric motors manufactured after the Energy Policy Act of 1995 are required to have high efficiency performance. During the walkthrough audit, SourceOne identified six (6) motors produced before 1995 that can be replaced with high efficiency equivalent units. These motors were each 7.5 horsepower and include the three AHU fan motors and the three condenser water pump motors in the building. The existing motors have an efficiency rating of 85.2%, where the new equivalent motors have an efficiency rating of 91.7%. This difference can be seen in Figure 2 below. Efficiency (TEFC 4-pole Motors) (percent) 95 90 -' 65 so 75 • • • • • • • • • • Replacement Results in Big Savings • • • • • nip • • • la • • * • 1 • s • • • : : • I I • • • • • • • • • • • • • • • • -7 -4—•-- • • • * • • • • 1 • • • • • • • • Average Old Motor • • Prior NEMA EE Standard • NEMA EE/EPACT • NEMA Premium I 10 20 50 NO a a Horsepowor Figure 2: Motor Efficiency The motor upgrade analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 24,398 kWh annually. The corresponding cost savings is $4,625 annually. With a total material and labor cost of $5,459 the simple payback would be 1.18 years. S I-ECM-2: Backroom Lighting Upgrades During the walkthrough audit, SourceOne identified several backroom areas with lighting fixtures that could be retrofitted or replaced with more energy efficient options. For retrofits, the fluorescent tubes and ballasts would be removed and replaced leaving the existing light fixture. Replacements require the removal of the existing light fixture and installation of an entire new one. These changes can be broken up into these four specific categories. • Retrofit 4ft, 2-lamp, linear fluorescent T12 fixtures with corresponding 4ft, linear fluorescent T8 lamps and electronic ballasts. o These retrofits will save about 31W per fixture • Replace 2ft, 2-lamp, T12 U-tube fluorescent fixtures with 2ft, 2-lamp, linear fluorescent T8 fixtures with electronic ballasts. Seven Penn Plaza • New York, NY 10001 • EFTA00287172 HBRK Associates Inc. 9 East 71' Street - Comprehensive Energy Assessment January 24, 2011 Page 8 o These replacements will save about 56W per fixture • Replace flood light bulbs with compact fluorescent lamps (CFLs) of equivalent luminosity o These replacements will save about 45W per bulb • Replace incandescent bulbs with CFLs of equivalent luminosity o These replacements will save about 40W per bulb The lighting upgrade analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 13,419 kWh annually. The corresponding cost savings is $2,544 annually. With a total material and labor cost of $8,507 the simple payback would be 3.34 years. S 1-ECM-3: Installation of VFDs on air handler units fan motors During the walkthrough audit, SourceOne identified several electric motors that could be made to run more efficiently through the installation and use of variable frequency drives (VFDs). These motors include the three (3) 7.5 horsepower units powering the fans in the main AHUs. For AHU fans, the HP requirement varies as the cube of the speed, so the slower the fan speed - the less energy required. A fan running at 80% speed will consume only 50% of the power of a fan running at full speed. At 50% fan speed, power consumption is only 16%. This is illustrated in Figure 3. 100 90 1 80 *9 70 V so 50 t 40 30 20 ry 10 0 A 100 HP fan running at half speed only requires the energy of a 16 HP motor? ggg go g O O O O CI CO V U1 CO r-- CO CO O Percent Fen Speed Figure 3: Relationship between Fan Speed and Motor HP Requirement Given the relationship shown in Figure 3, the installation of a VFD will help reduce the electric usage of the AHU fans. The AHU fan motors can be run at 80% speed when the building owner is present to maintain the low temperature he prefers. When the building owner is not present, the AHU fan motors can be run at 50% speed to reduce the power consumption and save energy. Seven Penn Plaza • New York, NY 10001 • EFTA00287173 HBRK Associates Inc. 9 East 71" Street - Comprehensive Energy Assessment January 24, 2011 Page 9 The installation of VFDs on AHU fan motors analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 21,276 kWh annually. The corresponding cost savings is $4,034 annually. With a total material and labor cost of $39,285 the simple payback would be 9.74 years. S I-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger During the walkthrough audit, SourceOne noticed that the hot condensate, produced from using the Consolidated Edison supplied steam for heating, is being cooled to acceptable disposal temperatures by quenching it with cold tap water before allowing it to drain into the sewer system. It is necessary to cool the condensate because the city requires that water temperature be below 120°F before allowing it to drain into the sewers. The condensate however is at a temperature of about 180°F after it exits the heat exchangers. The 60°F difference represents a significant amount of energy being wasted when the condensate is quenched and disposed. A method to use the energy in the still hot condensate rather than dispose of it would be to install a plate and frame heat exchanger between the condensate and unheated water to pre-heat it before sending it to the two domestic water heaters. This would conserve energy in the form of steam used in the domestic the water heaters, as well as save water that would be used to quench the condensate to an acceptable temperature. The condensate/hot water heat exchanger analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 17.59 Mlbs of steam as well as 67,000 ft3 of water annually. The corresponding cost savings is $800.85 annually. With a total material and labor cost of $5,514 the simple payback would be 6.89 years. S 1-ECM-5: Installation of a free-cooling heat exchanger During the walkthrough audit, SourceOne was informed that the chiller is used all year round. When temperatures are below 48°F however, the chiller could be effectively bypassed by installing a heat exchanger between the condenser water from the cooling tower and the chilled water that is circulated through the AHUs. This is effective because the chiller normally outputs chilled water at 47-48°F and if the outdoor air temperature is below the chilled water temperature a chiller is not needed to cool the chilled water. Heat will naturally flow from the warmer returning chilled water to the condenser water through the heat exchanger and then from the condenser water to the outside air in the cooling tower. Under these circumstances, the heat exchanger would harness free-cooling and a large amount of energy would be saved by shutting down the chiller unit when the temperature drops below 48°F. In addition to the heat exchanger itself, valves would need to be installed to switch between the chiller and heat exchanger and these would need to be tied into the existing central control system. The free-cooling heat exchanger analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 52,252 kWh annually. The corresponding cost savings is $9,906 annually. With a total material and labor cost of $30,644 the simple payback would be 3.09 years. Seven Penn Plaza • New York, NY 10001 • EFTA00287174 HBRK Associates Inc. January 24, 2011 9 East 71m Street - Comprehensive Energy Assessment Page 10 S I-ECM-6: Installation of an additional Multistack chiller During the walkthrough audit, SourceOne noticed that two chillers are being used in the facility. One of them is a 30-ton scroll type Multistack chiller. This was installed in the last few years to replace one of two older Carrier chillers. The other Carrier chiller is still in operation along with the new Multistack. Multistack chillers are modular units that are designed to easily be combined to create a chiller sized to match any demand. Therefore it is relatively inexpensive to add on to the Multistack modules already installed in the facility. SourceOne recommends installing another two (2) 15-ton modules to cover the load currently being handled by the older and less efficient Carrier chiller which can then be shut down permanently. With the more efficient chiller installed, we can expect an energy savings of about 0.22 kW/ton of cooling. The additional Multistack chiller analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 38,649 kWh annually. The corresponding cost savings is $7,327 annually. With a total material and labor cost of $87,750 the simple payback would be 11.98 years. Examined Energy Efficiency Measure That Cannot Be Financially Justified: SourceOne identified a potential energy conservation measure but, due to its large initial cost and long payback period, its feasibility will need to be further examined. The ECM is as follows: S I-ECM-7: Elevator Motor SCR Conversion During the walkthrough audit, SourceOne notice that the building's elevator motor currently runs on an outdated Motor Generator set. This could be replaced with a more modern and efficient SCR static drive. An MG set is used to convert the AC current from the utility line to DC current which is used by the main elevator motor. A DC motor was chosen for almost all elevators (until very recently) because it provides a much smoother operating elevator. Because utility supplied power is AC the MG set, which is an AC motor running a DC generator, was developed. This has been an effective solution in the past, however it poses several problems. To provide immediate power for the elevator motor, the MG set spends much of it's time in idle. When idling, the MG set can use up to 40% of its full load current. In addition, it is inefficient when in operation by today's standards and requires regular maintenance because it has high speed moving parts. The more recently developed SCR static drive is a solid state device that converts the AC current to DC. It does this more efficiently and immediately without running in any idle state. The elevator conversion is quite expensive, however, and will take an extended period to pay for itself. The elevator motor SCR conversion analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 21,723 kWh annually. The corresponding cost savings is $4,118 annually. With a total material and labor cost of $125,053 the simple payback would be 30.36 years. Seven Penn Plaza • New York, NY 10001 • EFTA00287175 HBRK Associates Inc. 9 East 71" Street - Comprehensive Energy Assessment SourceOne Recommended ECM Summary: SourceOne recommends the implementation of the following ECMs: 1. S 1-ECM-1: Motor Upgrades Annual Energy Savings: 24,399 kWh ($4,626) Simple Payback: 1.18 years 2. S 1-ECM-2: Backroom Lighting Upgrades Annual Energy Savings: 13,419 kWh ($2,544) Simple Payback: 3.34 years 3. S 1-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors Annual Energy Savings: 21,276 kWh ($4,034) Simple Payback: 9.74 years 4. S I-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger Annual Energy Savings: 17 Mlbs of steam ($602) Simple Payback: 6.39 years 5. S 1-ECM-5: Installation of a Free-Cooling Heat Exchanger Annual Energy Savings: 52,252 kWh ($9,906) Simple Payback: 3.09 years 6. S 1-ECM-6: Installation of an Additional Multistack Chiller Annual Energy Savings: 38,650 kWh ($7,328) Simple Payback: 11.98 years January 24, 2011 Page 11 Relative to the annual electric consumption of 853,740 kWh for 9 E 71" St., these ECMs represent a 21% energy savings and have a collective payback of 6.06 years. In addition to these six (6) ECMs, SourceOne has identified a potential energy conservation initiative whose enactment may benefit 9 E 71" St. but which cannot be easily justified financially. It is as follows: 1. S 1-ECM-7: Elevator Motor SCR Conversion Annual Energy Savings: 21,724 kWh of electricity ($4,119) Simple Payback: 30.36 years Each one of these initiatives could bring about substantial energy savings individually and as a collective whole. If you have any questions, please do not hesitate to contact us. Thank you for this opportunity to be of service. Seven Penn Plaza • New York, NY 10001 • EFTA00287176 HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 12 Sincerely, Timothy Sande Associate Project Engineer SourceOne Inc. Seven Penn Plaza • New York, NY 10001 • EFTA00287177 SourceOne Appendix: Section 1: Utility Billing Data Seven Penn Plaza • New York, NY 10001 • EFTA00287178 readsh4,41lostruelione: SourceOne All baka in lighi yen« are input folet. This dala med: le 6o gathored troen DCAS Or Ihe Facilly Sta. All halds in lighl green are aule« klet This flormaton Mn be used to analyzo gro tonal:dry olvanous Energy Ccansorvabon Moasuros (CCM] ~es in t•loni yebra are assumed tien* Ul% 443 nol govi:OKI Cr nl8veleNe 9 East 71si Skoti 9 Eau 7181 Sinte, Ne. Vak, NY 10021 Faciny Sauane Foolafte lor stoarn. Hour ot C)C13.10.1 247 Total ~Na:y Cp., ra•rg teluer I&I, 30.110 Fatale Sauero F00148110, «alt 30.400 } aciny Uso 6 uncion: Pnvate Inesitlence 1..%tataier ~annan: Electric Utility Consumation Information: ENTRE 81.043 CE BILL Vis une me Fe Nie Ar MIN Jun ar Aug 3•11 Oet Nov oie kSMI Tout 2009 KWH 62,880 69580 65.040 62.760 62.760 61.200 63.120 63,120 63.120 63,120 70,560 67.920 774.480 2010 KWH 74.160 62.400 63.720 63.720 65.760 80,280 80.2193 73.440 72.000 72.360 72.360 73.260 8$1.740 a iciainzataino iro~rano~irsi eastaste~ez ein7 2010 KW 127 1 C 149 149 120 161 161 130 134 151 151 139 161 2009 US 3 10.944.81 3 12.636.47 S 10,738.05 3 11.385.46 S 11.385.46 3 12.565.79 S 12.036.50 3 12.03650 1 12.036.50 5 12.036.50 3 11.341.73 1 11.793.59 3140.934 2010 1$$ $ 13,584.0 3 11,364.09 $ 13,98435 $ 13,984.35 6 13,354.50 $ 157652.24 $ 16,652-24 $ 13.255_74 j 13,140.22 3 13,965.58 1 13.92858 1 13,775.10 5167579 Unt COSI As. e Monn W.179 10.163 10.192 30.201 50.192 10.207 50260 30-185 $0.186 10.192 30-177 10.181 10190 Veer Avers« BocTric4 Ccm:ti-nou:n 8147 10 kWh Ele«ncal Deraand 149 kW Elaln Lend Fxter 62% Eletliic CO14 5 154.307 EFTA00287179 medal**, Inenutgena: SourceOne All bat in Iglu yelkne we input fees. This data need: ID be gathered from OCAS Or Mors:111y Sore All bads in Ighl green are oulpiA apps. This irionnanan wilt be used to analyze the toasettley of various Energy Conservabon Measures (ECM Values in telohl yelkra are imumed liege Ulilly eels 001 Of %kW Co ACIa.5914010 Steam Uti Account Nainelnlo Oat 2003 2010 2009 2010 Um Cod Average JAGS vies lit Stew n Cc Stearn Cog I 0 2.675 99.069 to Account Narnelnlo IVsar I OM 2001 1.1BTU 2010 ESSE 2009 5$$ 2010 5113Tu UntCoel Average 61.487U Gas ConsyniA cr I SI IUBTU Gas Cos: 1.067 Annual UM 312 264 290 258 246 263 232 217 217 271 259 323 3.153 274 263 214 221 204 198 172 172 183 205 2391 25' 2597 12.112 I 9997 9.938 9,294 b 4214 $ 7 710 765 1 6 025 $ 6 362 $ 7 305 I t:173 1 1:121 102 768 10.365 9(962 8./30 S asos $ 6510 355 8.402S sq:Sia t 7'2139 -I 9670 38.36 S 37.92 $ 3/.01 4 37.17 s slas s use' s 32.49 $ 31.96 $ ass* 30.08 4 4 Jan Apr Ilay Jun Jul Aug [Sepil l. il ler [Dec Annual Total 4.2 35 3 4 3 3 33 4 0 3 4 3 7 38 24 4 8 35 43 3.4 4 4 4 7 5.0 6.01 85 93 63 50 $ 97 87 $ 78 SS $ 68 so $ 70 76 S 56 B0 93!, 93 70 72 105 91 3 94 91 103 119 5 77 $ 153 $ 123 11f).) 3 22.89 S 23.82 $ 2214 $ 19.52 4 2052 $ 20.07 4 2035 $ 2048 $_ 19.64 5 2261 $ 1899 $ 2.68 $ 2.`7 At nue, Elecon Coreunplon 27.14 Kahn' 92.6 Mule Annual Steam Consumseco 0.096 Mbyte 111.2 Mule Total Annual Energy COnsumplIan 204 kIlluit2 2.04 theme& EFTA00287180 10/13/2010 12/14/2010 144,720 Elec 151.2 $27,931.16 11/10/2010 12/14/2010 -- -- -- 10/13/2010 11/10/2010 -• -- -- 9/13/2010 10/13/2010 72,000 134.4 $13,140.22 8/12/2010 9/13/2010 73,440 129.6 $13,255.74 5/13/2010 8/12/2010 -- -- -- 6/14/2010 8/12/2010 160,560 160.8 $33,304.47 5/13/2010 6/14/2010 65.760 120 $11354.50 3/17/2010 5/13/2010 127,440 148.8 $27,968.69 4/15/2010 5/13/2010 -- -- -- 3/17/2010 4/15/2010 •• -- -- 2/16/2010 3/17/2010 62,400 122.4 $11,364.09 1/14/2010 2/1672010 74,160 127.2 $13,584.62 12/15/2009 1/14/2010 67,920 136.8 $11,793.59 11/12/2009 12/15/2009 70,560 127.2 $11,341.73 7/15/2009 11/12/2009 252,480 124.8 $48,146.01 10/14/2009 11/12/2009 -• -- -- 9/14/2009 10/14/2009 -• -- -- 8/13/2009 9/14/2009 -• -- -- 7/15/2009 8/13/2009 -• -- -- 6/15/2009 7/15/2009 -• -- -- 6/15/2009 7/15/2009 61,200 120 $12,565.79 4/15/2009 6/15/2009 125,520 120 $22,770.91 3/17/2009 4/15/2009 65,040 120 $10,736.05 2/13/2009 3/17/2009 68,880 122.4 $12,635.47 1/14/2009 271372009 62,880 132 $10,944.94 12/12/2008 1/14/2009 78,960 132 $14,874.61 90,000 80,000 70,000 60,000 .c 50,000 40,000 30,000 20,000 10,000 0 L._ Elecrtrical Consumption 62.880 132 $10,944.94 _2009 2009 !Ian feb 68,880 122.4 $12,635.47 2009 mar 65.040 120 $10.736.05 2009 apr 62760 120 $11,385.46 2009 may 62760 120 $11,385.46 2009 jun 61200 120 $12,565.79 2009 jul 63120 124.8 $12,036.50 2009 aug 63120 124.8 $12.036.50 2009 sep 63120 124.8 $12,036.50 2009 oct 63120 124.8 $12,036.50 2009 nov 70.560 127.2 $11,341.73 2009 dec 67,920 136.8 $11,793.59 2010 jan 74.160 127.2 $13,584.62 2010 feb 62,400 122.4 $11,364.09 2010 mar 63720 148.8 $13,984.35 2010 apr 63720 148.8 $13,984.35 2010 may 65,760 120 $13,354.50 2010 jun 80280 160.8 $16,652.24 2010 jul 80280 160.8 $16,652.24 2010 aug 73,440 129.6 $13,255.74 2010 sep 72.000 134.4 $13,140.22 2010 oct 72360 151.2 $13,965.58 2010 nov 72360 151.2 $13,965.58 2010 dec jan teb mar apr may jun jul aug sep oct nov dec Month K 2009 ❑2010 EFTA00287181 year month Mlbs bill amount Payments 2008 oct 269.50 $8,682.83 7323.1 $32.22 2008 nov 302.56 $10,277.13 $8,682.83 $33.97 2008 dec 319.33 $11,477.13 $10,277.13 $35.94 2009 jan 311.81 $12,112.07 $11,477.13 $38.84 2009 feb 263.56 $9,997.06 $12,112.07 $37.93 2009 mar 290.40 $9,938.08 $9,997.06 $34.22 2009 apr 258.30 $9,293.57 $9,938.08 $35.98 2009 may 247.64 $8,428.57 $9,293.57 $34.04 2009 jun 262.77 $7,709.52 $8,428.57 $29.34 2009 jul 231.60 $6,765.16 $7,709.52 $29.21 2009 aug 216.80 $6,025.48 $6,765.16 $27.79 2009 sep 216.96 $6,351.95 $6,025.48 $29.28 2009 oct 270.88 $7,304.81 $6,351.95 $26.97 2009 nov 258.53 $8,370.31 $10,084.29 $32.38 2009 dec 323.42 $10,471.23 $0.00 $32.38 2010 jan 273.78 $10,345.10 $0.00 $37.79 2010 feb 262.79 $9,962.25 $8,757.86 $37.91 2010 mar 214.19 $8,736.05 $9,962.25 $40.79 2010 apr 220.65 $8,508.15 $8,736.05 $38.56 2010 may 204.06 $6,633.56 $8,508.15 $32.51 2010 jun 197.96 $6,709.73 $6,633.56 $33.89 2010 jul 172.17 $6,354.52 $6,709.73 $36.91 2010 aug 172.00 $6,401.62 $6,354.52 $37.22 2010 sep 183.43 $6,712.59 $6,401.62 $36.59 2010 oct 205.05 $7,009.44 $6,712.59 $34.18 2010 nov 2010 dec Steam Consumption 350.00 300.00 250.00 u, 200.00 .o • 150.00 100.00 50.00 0.00 jan feb mar apr ma jun ul aug sep oct nov dec Month K 2008 O2009 U2010 EFTA00287182 . From Data To Data Gas Use (Therm/ Gas Bill Amt 10/13/2010 12/14/2010 -- -- 11/10/2010 12/14/2010 85 $153.13 10/13/2010 11/10/2010 35 $77.11 9/13/2010 10/13/2010 60 $118.76 8/12/2010 9/13/2010 50 $102.66 5/13/2010 8/12/2010 140 $282.26 6/14/2010 8/12/2010 -- -- 5/13/2010 6/14/2010 -- -- 3/17/2010 5/13/2010 -- -- 4/15/2010 5/13/2010 57 $106.34 3/17/2010 4/15/2010 34 $72.40 2/16/2010 3/17/2010 31 $70.45 1/14/2010 2/16/2010 41 $93.12 12/15/2009 1/14/2010 35 $79.50 11/12/2009 12/15/2009 48 $99.42 7/15/2009 11/12/2009 -- -- 10/14/2009 11/12/2009 24 $56.28 9/14/2009 10/14/2009 38 $75.68 8/13/2009 9/14/2009 37 $75.50 7/15/2009 8/13/2009 34 $70.13 6/15/2009 7/15/2009 40 $79.84 6/15/2009 7/15/2009 -- -- 4/15/2009 6/15/2009 65 $136.66 3/17/2009 4/15/2009 34 $78.16 2/13/2009 3/17/2009 35 $86.78 1/14/2009 2/13/2009 42 $96.84 12/12/2008 1/14/2009 39 $98.34 MAIAl. qas (therm) _ MBTUI aas 4 2009 jan 42 4.2 $96.84 2009 feb 35 3.5 $86.78 2009 mar 34 3.4 $78.16 2009 apr 32.5 3.25 $68.33 2009 may 32.5 3.25 $68.33 2009 jun 40 4 $79.84 2009 jul 34 3.4 $70.13 2009 aug 37 3.7 $75.50 2009 sep 38 3.8 $75.68 2009 oct 24 2.4 $56.28 2009 nov 48 4.8 $99.42 2009 dec 35 3.5 $79.50 2010 jan 41 4.1 $93.12 2010 feb 31 3.1 $70.45 2010 mar 34 3.4 $72.40 2010 apr 57 5.7 $106.34 2010 may 46.66666667 4.666666667 $94.09 2010 jun 46.66666667 4.666666667 $94.09 2010 jul 46.66666667 4.666666667 $94.09 2010 aug 50 5 $102.66 2010 sep 60 6 $118.76 2010 oct 35 3.5 $77.11 2010 nov 85 8.5 $153.13 2010 dec 90 80 70 60 50 40 30 20 10 0 Gas Usage L jan feb mar apr may jun jul aug sep oct nov dec Month 02009 la2010 EFTA00287183 SourceOne Appendix: Section 2: Energy Conservation Measures Summary Sheets Seven Penn Plaza • New York, NY 10001 • EFTA00287184 SI.ECM.1 Moto. UpgradOS Suatatd61ficlassTat1 lip OLD EPP NEW PPP 5011 S1,74 49.54 7511 85251 91.7% 1003 8514 91.7% 15110 4484 93.04 SNP 97.714 9.1.04 2590 09 MS 91615 3000 89.7% 94.1% 4000 90.154 9.1.54. 50 00 946% 91.015 60110 91.7% 9544 7503 9194 95.4% 10040 9244 95.1. 125.00 92214 95" MOO 9244 95.44 leek Curl S New 73 HP lush Elfusens Nam 32.766.00 F4544/44 S.k osatio0141.44 $1278.00 title Aexoeyniym Fltsek 6pin..eptacazn bass, f on molars 'SNP Aim mAW el Kinney Da ed on NE TA Ssvigards .CorroYee motor assessment rept/Jo retifyoisYng meter eXtency ES1440441444441 COSI S2.2136 00 1,5.454.1 1144 Con $12711 00 Prolocial EleclOcal Savings 24.399.90 KWh PROPONED CAPITAL COST4 MATERIAL AND LABORN S 4,044 00 TOTAL ENERGY SAVINC4.4 kWh 24.396 00 1tWa TOTAL ANNUAL SAVINGS 495 S 4.625.91 SIMPLE PAYBACK 4EIXCL FEES & CONTINGENCY. 0.67 Years F4190544 CSPOI COSI 5 4p4(0 Contingency Erg neenng mem TOTAL 1 Iv WO (Socha span. ledulmli I IS EFTA00287185 61.10.2 Larag %ran ti.le Tee • of (Wife .untall4tert(tul4n0) sail .Ja P,On.R<Ph«, " .elt.tio C 2 bah eaulrl2 fames 4! 06 4' .1 ledb uneht1), vdelneutit Mao 51 Z :balk TI: Mee nm 2 2 bullninneafl et data. labs 6.) Mal leis I: M 110 (It Mods :0 lowaNketalt A en mn GU 104 >SLUM cesiAlusat • Min LautlIluue 06(.. 1(. 110Luste kul OM 2165 III le $.1100 414 On SIM» lice 5.2M 3,6900 14407) S431532 WI 160/ $1500 $1520:. 131 my 1301 $15030 MOO 56.0115 My fleeted tune Cmetmom ‚W. New Faints Genera., II )57 kWh Amid Faun S..nen ILm9 Comm.Bean Cussapta• 21176 kWh. tsionak•I anal Eleane Crests 4.)7t2 Piro‚attd Fianna CantlIWIMI I I.757 Pitretinl Iltatitace(4. 2:"..e I I PltratetIF.Tec.nikl Snap IKm 9 kWh Pe.ratt.1 Amid Payinck 2.144119 6 Ed II 1.:111 1$ PRCPOSED CAPITAL COST. 16.101 76 ISW. wSM TOTAL ENERGY SAVINGS kWh 519 LAT TOTAL CAPITAL C067 $ !MAE TOTAL ANNUAL SAVINGS 44) 2.5•109 SIMPLE PAYBACK (EXCL FEES. CONTINCENCVi 2.4.0 inn Matto rnlied. slillud.d• • indak• slime lieculfee EFTA00287186 91.60.1.3 imunsinn or 336.334 Rocponcy Oa% GA A/ NTT% EITOtallITLISIXSOlcvlatHT impono4014 Dee 44 el memo Ho 040 Woe URN. Ow% WOO" • WWII, Mrs —4 has PO4.44 0881068 Pommel 78p/488 ..1.0888w8 Teo win 97.5 9510 100 19 13 6 110% 0% 183 122 IS 137 424 %le% 77 51 M 33% 099 744 4% 61 568 87.5 66N90 196 131 68 70% 011. 1893 ITO 154 NIT 82.5 SOT 89 356 252 126 80% 0% 3660 2433 297 2730 774 Tie% 608 405 5671 3814 478 44£ 72.5 7010 75 812 941 271 ION PA 7841 5227 638 5865 67.5 860370 809 939 270 ON 0% 7812 5204 636 5844 824 6010 64 754 506 250 12% 7320 4886 586 5482 57.5 551060 7% 470 235 19% 0% 6808 4938 564 5092 52.5 501055 689 459 230 27% 0% 6693 4435 541 4977 474 46 le 20 07 sse 228 35% 0534 4422 240 496£ 424 40 ie 45 266 511 256 42% 0% 7387 4931 602 5533 37.5 351040 838 559 279 SON 0% 8092 5395 669 6063 324 331835 635 419 200 ST, 0% 0344 4043 493 4.52( 375 351e30 365 243 122 65% 0% 3524 2350 287 2636 22.5 200325 222 148 74 73% 0% 2144 1429 174 1604 174 151420 Ill 78 38 017, 1130 753 82 845 124 10 io 15 51 34 17 88% 492 328 40 368 7.5 5 to 10 17 II 6 96% 0% 164 109 13 123 23 OloS 2 1 1 104% 0% 19 13 2 II 87% 49900 2919.0 0 84143 562% 6872 83167 UM T4TUpFT H Roll Fan HP ETIMG VFD AC.1 75 NO AC.2 7.6 NO 40.3 7.5 NO Tcal 228 0 Jan CwlnbfknW9I 7461 vi0ola AC.I Tour AC'S (76IIT C.33 4.90000 2440040 $ 2%10040 64100- Awarchont 0cc Space TOM FF) 70 F kopulotock IFI 60 F Coalp 441040..(F) 85F Peak kW Octinind 160.8 kW Actual KWH SW70 21.276 WA 6564 unl (ail 0 0.19 8/14% Toler DMA «Mon% Fan HP 22 PIP CoNenionCOrdiart 0246 IsIllifIsM abastio void FlaintonateNtle speed 80% Ea Wei 1.3% 807. Ea TNT EN 89% HITT TOT Oa4 used loarwyte oock Malt, neeCti Oynsm GI INN TeTa. %Loaf .10ANTITHISOTTSTHAT FW.TP ' 718)6811 OW • Wm 47.0088.8•Wil Zorem Ekes Concueppso 64.443 VT Toocied ElocaleGiConuarcli'm 67367 Prow...40 Caola 0)51 $ 2310) Pcsoclo3EITTATIST9,21 21.276 VT 80'8,1801Y 20 $ 5.8Z) W2r..e.nr, 15 5 4.3I. PROPOSED CAPUT COST' 28.10) TOTAL CAPITAL COST $ 53265 TOTAL ENERGY SAMOS AM awn TOTAL ANNUAL ENERGY SAWS III Eilectlw Payback (14% Wheat° 9.74 SfatE PAYBACK (EXT. FEESaCONTINGENCY) 721 Yrs EFTA00287187 Stand-. Iwollaow et Hui Eu6vµn onewadpewk Cunonl welor badet Pss» Mcal Exthirg« Gort sovod ITOM Odd min cOM wder km, SO F Cdd walto lemo 50F elume used 13 cool concleende 3e4 6755 100 im Il leviaber kelP 140F co-clename Wem 169F toelaiwan $2 95 per 100cv R Tarn, <Memme e F wate' alle P.0t 109F IOS OMI 0 *Ih, used $1.052 19 Vtatorrealod ilitnale 420000 to Toto cliTecorno 50F teurnownedby k. 6730769 100 co II MW. 31 66 Mbs tax 17.59 Ubs opld wate sawn> $196.55 Con olheatng 5 1.06412 Coeland S te 29 berds mg Leb« con folg teil Atelual Cal sakod time Penne 5.1 Proposed Gerte Cool 1 4..0011 S2: 1 Orenppopy 330k I 11170 St. En? nee"; iscs. 1 41: )1 TOTAL a Kran elben Peteet Osa 1«1•64 CM EFTA00287188 SI.E(.11.3 trialsHalton or Mee-cooling Heal Exchanger TOrnnarrilute BIN Data lakl.pts Hangs Annual Hrs 97.5 95 to 100 19 92.5 90 to 95 77 87.5 85 to 90 196 82.5 80 to 85 378 77.5 75 to 80 608 72.5 70 to 75 812 67.5 65 to 70 809 62.5 60 to 65 759 57.5 55 to 60 705 52.5 50 to SS 689 47.5 45 to SO 687 42.5 40 to 45 766 37.5 35 to 40 838 32.5 30 to 35 628 27.5 25 to 30 365 22.5 20 to 25 222 17.5 15 to 20 117 12.5 10 to 15 51 7.5 5 to 10 17 2.5 Olo 5 2 8745 Annual hours below 48 3349.5 Materials cost Labor cost Total cost Annual Cost saved Simple Payback Chiller size Load factor Chiller demand Winter hours Chiller energy usage Energy cost 40 ions 0.5 0.78 KWiton 3349.5 hours 52252.2 KWh $9.906.58 hourly chiller flow 9590.41 galhr 159.8402 galornin $6.379.67 Proposed Capital Cost 22.699.67 $16.320.00 Contingency 20.0% 4.539.93 $22.699.67 Engineering 15 Cr. S 3.4C4 $8.906.58 TOTAL 3 30.644.56 2.29 Effective Payback noes included') 3.09 EFTA00287189 S I-ECM-6 Installation of Addidional Mulusty& Chillers Chilling Load Savings 0.22 KWitonihr hourseyear 4392 energy savings 38649.6 KWh tons 40 cost savings $7,327.64 KW/ton 0.78 KWh 137030.4 Cost per year 625.979.83 Materials cost Labor cost Total cost Annual Cost saved $7.327.64 Simple Payback 58.87 645.000.00 $20.000.00 $65.000.00 Proposed Capital Cost $ 65.000 00 Contingency sem, $ 13.000 00 En ineering S 9 7E/3 00 TOTAL $ 87.750.00 ElfeclIve Payback (lees included) 11.98 EFTA00287190 SI.ECNI-7 Elevator SCR Ccoversion Annual Hours LIG Sol Motor HP MG Set Motor Efficiency MG Set System Electric Consunction MG Set Motor Electric Costs SCR System Electric Consumption SCR Motor Electric Costs Yearly Savings Yearly Savings 4368 38 85.50% 144823.47 KWh $27.457.33 123099.95 KWh 523.338.73 21.723.52 KWh 54.118.60 Materials cost $37.053.04 Proposed Capital Cost 52.632.10 Labor cost $55.579.06 Contingency 200% S 16526 42 Total cost $92.632.10 Engines/Mg 150% S ilfsco $2 Annual Cost saved $4.118.60 TOTAL S InA53.34 i Simple Payback 22.49 efeclive Payback (lee. in< tudecli 30.35 EFTA00287191 SourceOne 9 E 71st Street - Energy Efficiency Analysis Summary 9 E 71st Energy Assessment Results ECM ID Energy Conservation Measure (ECM) Yearly Savings (kWh) Yearly Savings (Mlbs ) Yearly Savings (BTU) Yearly GHG Emissions Decrease (M7CO2e ) Capital Cost (S) Yearly Savings (Si Effective Payback (Years) 51 .ECM-1 Motor Upgrades 24.399 83.248.691 II S 5.459 $4.626 1.18 S1-ECM-2 Lighting Upgrades 13.419 45.784.951 6 $ 8.507 $2.544 3.34 S1-ECM-3 VFD on Air Handlers 21.276 72.592.188 10 $ 39.285 $4.034 9.74 S1-ECM-4 Heat Exchangner on Condensate 0 17.59 18 1 $ 5.515 $801 6.89 S1-ECM-5 Heat Exchanger Parallel with Chiller 52,252 178.284.506 23 $ 30.645 $9.907 3.09 S1-ECM-6 Increase Multistacks 38.650 131.872.435 17 $ 87.750 $7.328 11.98 S1-ECA$1.7 Elevator SCR Conversion 21.724 74.120.650 10 $ 125.053 $4.119 30.36 Total 171,718 18 585,903,440 78 $ 302,214 $33,357 9.06 Total without Elevator SCR 149.995 511.782,789 6820% $177.161 $29.239 6.06 EFTA00287192