Appendix B Minimum Equipment Efficiency Standards
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1 Appendix B: Minimum Equipment Efficiency Standards Appendix B Minimum Equipment Efficiency Standards 1
2 California s 2000 LNSPC Program Procedures Manual Appendix B: Minimum Equipment Efficiency Standards This Appendix is an overview of building and equipment standards in the State of California that have an effect on baselines used in calculating savings. It contains the minimum equipment efficiency standards that a Project Sponsor must use to estimate the baseline system models and energy savings for projects that involve the replacement of lighting equipment, motors, and cooling equipment installed as part of a LNSPC Program Project. Energy savings for lighting, motors, cooling, and gas equipment will use the standard efficiencies in this Appendix as a baseline for calculating energy savings. These standards are based on California s Title 24 minimum equipment efficiency standards. Some applicable tables have been reproduced in this section for convenience. Please note that the most current standards take precedence. Savings from all other equipment installed as part of the LNSPC Program will be calculated using existing equipment as a baseline. B.1 Electrical Motors The efficiencies of permanently wired, poly-phase motors that are at least one horsepower in size and that are used for fan, pumping, and conveyance applications, are defined in Table B.1, which is based on California s Title 24 and the National Electric Manufacturers Association s (NEMA) Table The efficiency values given in Table B.1 should be used to determine the baseline motor energy consumption. Motors installed under the LNSPC Program must be more efficient than the standards shown in order to be eligible for Program incentives. 2
3 Appendix B: Minimum Equipment Efficiency Standards Table B.1: Minimum nominal full-load motor efficiency for single speed poly-phase motors Number of Poles Synchronous Speed Motor HP Open Motors Enclosed
4 California s 2000 LNSPC Program Procedures Manual B.2 Cooling, Heating and Air Conditioning Equipment For the following types of equipment, baseline efficiency ratings are provided in Tables B.2 through B.11 below. Unitary air conditioners and heat pumps (air cooled, evaporatively cooled, or water cooled), Packaged-terminal air conditioners and heat pumps, Room air conditioners and heat pumps, Water-source and ground-water source heat pumps, and Water- and air-cooled water chilling packages. Gas furnaces and boilers These tables are based on California s Title 24. Choose the appropriate baseline cooling equipment model for each Project Site in the measure-specific M&V plan. The Utility Administrator will check that the development method is appropriate to establish the baseline. The following tables illustrate the baseline efficiencies of particular types of heating and cooling equipment. The performance standards in these tables should be used to determine the equipment baseline. All heating and cooling equipment that will be installed under the LNSPC Program must be more efficient than the standard in order to be eligible for Program incentives. For equipment for which rating conditions are not provided, the baseline shall be defined as the energy consumption of existing equipment. 4
5 Appendix B: Minimum Equipment Efficiency Standards Table B.2 Standard rating conditions and minimum performance for unitary air conditioners and heat pumps, air cooled, electric, except packaged terminal and room air conditioners Cooling capacity, BTUH Cooling Mode Rating condition, F db Type Performance Standard < 65,000 Seasonal Split 10.0 SEER < 65,000 Seasonal Packaged 9.7 SEER 65,000 and < 135, Packaged and split 135,000 and < 760, ,000 Heating Mode (heat pumps) 8.9 EER 8.5 EER 8.2 EER < 65,000 Seasonal Split 6.8 HSPF < 65,000 Seasonal Packaged 6.6 HSPF 65,000 and < 135, db/43 wb Packaged and split 65,000 and < 135, db/15 wb Packaged and split 135,000 and < 760, ,000 and < 760, , , COP 2.0 COP 2.9 COP 2.0 COP 2.9 COP 2.0 COP 5
6 California s 2000 LNSPC Program Procedures Manual Table B.3 Standard rating conditions and minimum performance for water-cooled air conditioners and heat pumps, electric Cooling capacity, BTUH Rating condition, air F db / F wb Rating condition, entering water F Required Minimum Efficiency Water cooled heat pumps < 65,000 80/ EER < 65,000 80/ EER 65,000 and <135,000 80/ EER < 135,000, heating 70/ COP Ground water cooled heat pumps < 135,000, cooling 80/ EER < 135,000, cooling 80/ EER < 135,000, heating 70/ COP < 135,000, heating 70/ COP Water cooled unitary air conditioners < 65,000 80/ EER 65,000 and <135,000 80/ EER 135,000 80/ EER 6
7 Appendix B: Minimum Equipment Efficiency Standards Table B.4 Standard rating conditions and minimum performance for unitary air conditioners and heat pumps evaporatively cooled, electric Cooling capacity, BTUH Rating indoor air F db / F wb Rating outdoor air F db/ F wb Performance Standard < 65,000 80/67 95/ EER 65,000 and < 135,000 80/67 95/ EER 135, EER Table B.5 Standard rating conditions and minimum performance for packaged terminal air conditioners and heat pumps, air cooled, electric Mode Rating condition, outside air F db Performance Standard Cooling (0.16*kBTUH capacity) Cooling (0.20*kBTUH capacity) Heating (heat pump) 47 db/43 wb 1.3+(0.16 * EER above), COP 7
8 California s 2000 LNSPC Program Procedures Manual Table B.6 Standard rating conditions and minimum performance for room air conditioners and room air conditioner heat pumps, electric Category Capacity, BTUH Minimum Performance, EER Without reverse cycle and with louvered sides < 6, Without reverse cycle and with louvered sides 6,000 and < 8, Without reverse cycle and with louvered sides 8,000 and < 14, Without reverse cycle and with louvered sides 14,000 and <20, Without reverse cycle and with louvered sides 20, Without reverse cycle and without louvered sides < 6, Without reverse cycle and without louvered sides 6,000 and < 20, Without reverse cycle and without louvered sides 20, With reverse cycle and with louvered sides All 8.5 With reverse cycle and without louvered sides All 8.0 8
9 Appendix B: Minimum Equipment Efficiency Standards Table B.7 Standard rating conditions and minimum performance for large condensing units, electric, >135,000 BTUH capacity Size Category Required Efficiency Air cooled condensing units 135, EER Water or evaporatively cooled condensing units 135, EER Table B.8 Standard rating conditions and minimum performance for electric water chilling packages Cooling capacity, tons Performance Standard Water cooled < COP (0.925 kw/ton) 150 and < COP (0.837 kw/ton) 4.7 COP (0.748 kw/ton) Air cooled, with condenser < COP (9.2 EER) COP (8.5 EER) Air cooled, without condenser All 3.1 COP (10.6 EER) 9
10 California s 2000 LNSPC Program Procedures Manual Table B.9 Standard rating conditions and minimum performance for service water heaters. Type Fuel Input Rating Storage Gas 75,000 Btu/hr Storage Gas > 75,000 Btu/hr 155,000 Btu/hr Storage Gas > 155,000 Btu/hr Storage Gas > 155,000 Btu/hr Instantaneous Gas 200,000 Btu/hr Instantaneous Gas > 200,000 Btu/hr Instantaneous Gas > 200,000 Btu/hr Volume (gallons) Input to Vol. Ratio (Btuh/gal ) Therma l Eff. (%) Standby Loss (%/hr) (1) Energy Factor (2) ( x V) All < 4,000 78% /V All < 4,000 78% /V 10 4,000 77% /V < 10 4,000 80% No requirement 10 4,000 77% /V 0.62 ( x V) All Electric 12 kw ( x V) Storage Electric > 12 kw /V (1) V in the Standby Loss equations is measured volume. (2) V in the Energy Factor equations is the rated volume. 10
11 Appendix B: Minimum Equipment Efficiency Standards Table B.10 Minimum Mechanical Equipment Efficiencies Gas Furnaces Equipment Type Gas Fan Type Central Furnaces Size Category Sub-Category of Rating Condition < 225 kbtu/hr 225 kbtu/hr max. cap (1) min. rated cap. (1) Oil Furnaces/AC Units 225 kbtu/hr both max. and min. rated cap (1) Required Efficiency 78% AFUE 80% thermal 78% thermal 81% thermal Gas Wall Furnaces fan type 42 kbtu/hr 73% AFUE > 42 kbtu/hr 74% AFUE gravity type 10 kbtu/hr 59% AFUE 10 kbtu/hr but 60% AFUE 12 kbtu/hr 12 kbtu/hr but 61% AFUE 15 kbtu/hr 15 kbtu/hr but 62% AFUE 19 kbtu/hr 19 kbtu/hr but 63% AFUE 27 kbtu/hr 27 kbtu/hr but 64% AFUE 46 kbtu/hr < 46 kbtu/hr 65% AFUE Gas Floor Furnaces 37 kbtu/hr 56% AFUE > 37 kbtu/hr 57% AFUE Gas Room Furnaces 18 kbtu/hr 57% AFUE 18 kbtu/hr but 58% AFUE 20kBtu/hr 20 kbtu/hr but 63% AFUE 27 kbtu/hr 27 kbtu/hr but 64% AFUE 46 kbtu/hr > 46 kbtu/hr 65% AFUE Gas Duct Furnaces max. rated cap. (1) 80% thermal min. rated cap. (1) 75% thermal Gas Unit Heaters gas fired max. rated cap. (1) 80% thermal min. rated cap. (1) 74% thermal 1. Provided and allowed by the controls. 11
12 California s 2000 LNSPC Program Procedures Manual Table B.11 Minimum Mechanical Equipment Efficiencies for Gas Boilers Equipment Type Gas Boilers Size Category Sub-Category Of Rating Condition Required Efficiency Steam Boilers < 300 kbtu/hr 75% AFUE Other Boilers < 300 kbtu/hr 80% AFUE All 300 kbtu/hr At both max & min capacity (1) 80% Thermal 12
13 Appendix B: Minimum Equipment Efficiency Standards B.12 Chiller Performance Curves and Characteristics Chiller performance as a function of load, condenser water temperature and flow are legitimate design parameters for which the standard should provide both credit and penalty. Owners, manufacturer s sales representatives and design professionals spend significant time, money and effort to match a machine s performance to the characteristics of a specific plant. This is as legitimate a trade-off as any presently provided in the Performance Method. ASHRAE Standard 90.1R-PRD1 published a new set of 7 default curves represent four compressor types and two condenser conditions. These curves were developed under the scrutiny of the public review process and with the cooperation of both ARI and the major manufacturers. These curves are based on recent technology (circa 1993). When scaled to the full-load efficiency (COP) values that meet or exceed the part-load (IPLV) ratings. These curves have been adopted for use in modeling baseline chiller operation for the LNSPC Program. Coefficient Scroll Recip Screw Centrifugal a N/A b N/A c N/A d N/A e N/A f N/A Table 1: ASHRAE Standard 90.1R-PRD1 Default Capacity Coefficients - Electric Air-Cooled Chillers Coefficient Scroll Recip Screw Centrifugal a b c d e f Table 2: ASHRAE Standard 90.1R-PRD1 Default Capacity Coefficients - Electric Water-Cooled Chillers Coefficient Scroll Reciprocating Screw Centrifugal a N/A b N/A c N/A d N/A e N/A f N/A Table 3: ASHRAE Standard 90.1R-PRD1 Default Efficiency EIR-FT Coefficients - Air-Cooled Chillers 13
14 California s 2000 LNSPC Program Procedures Manual Coefficient Scroll Reciprocating Screw Centrifugal a b c d e f Table 4: ASHRAE Standard 90.1R-PRD1 Default Efficiency EIR-FT Coefficients - Water-Cooled Chillers Coefficient Scroll Recip Screw Centrifugal a N/A b N/A c N/A Table 5: ASHRAE Standard 90.1R-PRD1 Default Efficiency EIR-FPLR Coefficients - Air-Cooled Chillers Coefficient Scroll Recip Screw Centrifugal a b c Table 6: ASHRAE Standard 90.1R-PRD1 Default Efficiency EIR-FPLR Coefficients - Water-Cooled Chillers Chiller Type Default Unloading Ratio Reciprocating 25% Screw 15% Centrifugal 10% Scroll 25% Table 7: ASHRAE Standard 90.1R-PRD1 Minimum Unloading Ratios for Electric Chillers 14
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