2011 Title 24 Supermarket CASE

LARGE SUPERMARKET: Simulation Assumptions Document – August 3, 2010
Large
Supermarket / Air-Cooled Condenser / Central / MAC
Distributed / MAD
Evap-Cooled Condenser / Central / MEC
Fluid Cooler / Central / MFC
Distributed / MFD

Assumptions apply to all Large Supermarket configurations listed in the table above, unless otherwise noted. For each ECM, Baselines are defined in the “Baseline” column adjacent to ECM description in “ECM” column.

Item

/

Base Case

/

Baseline

/

ECM

System Information
Refrigerant / 404A / Same / Same
System Type / MAC, MAD, MEC, MFC, MFD / Same / Same
Indirect systems (optional): / None / [Baseline ECM 3.2]
Floating head pressure control
SCT-CTRL = FIXED
SCT-SETPT = 70
SCT-THROTTLE = 2
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
Ambient-following logic
SCT-CTRL = DRYBULB-RESET or WETBULB-RESET
SCT-AMBIENT-DT = < optimum TD >
SCT-THROTTLE = 1
Condenser fan variable speed control
CAPACITY-CTRL = VAR-SPEED-FAN
Suction setpoint automation
TEMP-CTRL = LOAD-RESET
MIN-TEMP-SETPT = design suction temperature per refrigeration schedule
MAX-TEMP-SETPT = design SST + 5°F
Mechanical subcooling
TEMP-SETPT = 50
DESIGN-SUBCOOL-T = 50
SUBCOOL-DP = 2
LIQUID-CIRCUIT = MT Group
SUCTION-CIRCUIT = MT Group
LED Lighting in Reach-in Glass Doors
See LED Lighting Spreadsheet Comparison
LED Lighting in Open Cases
See LED Lighting Spreadsheet Comparison / [ECM 3.2]
Indirect System=ON
Compressor
Compressor Type / MAC, MEC,MFC: Semi-hermetic compressors
MAD, MFD: Scroll compressors / Same / Same
Compressor Selection / MAC, MEC,MFC:
LT Semi-Hermetic: 06DR316
MT Semi-Hermetic: 06DR725
MAD, MFD:
LT Scroll: ZF40KVE
MT Scroll: ZB92KCE / Same / Same
Suction Groups / (3) Three SST Levels
(1) LT Suction Group
(2) MT Suction Groups
No AC Rack / Same / Same
Pressure Drop between SET and SST / 2°F / Same / Same
Compressor RGT Adjustment
(RGT = Return Gas Temperature) / See representative compressor spreadsheets / Same / Same
Means of compressor control / Fixed setpoint electronic sequencing control with on/off cycling
DESIGN-SST = design suction temperature per refrigeration schedule / Same / [ECM 2.3] Suction setpoint automation
TEMP-CTRL = LOAD-RESET
MIN-TEMP-SETPT = design suction temperature per refrigeration schedule
MAX-TEMP-SETPT = design SST + 5°F
Subcooling / None / None / [ECM 2.4] Mechanical subcooling
TEMP-SETPT = 50
DESIGN-SUBCOOL-T = 50
SUBCOOL-DP = 2
LIQUID-CIRCUIT = MT Group
SUCTION-CIRCUIT = MT Group
Condenser
Condenser Type / MAC, MAD: Air cooled
MEC: Evaporative cooled
MFC, MFD: Fluid cooler / Same / Same
Ambient Temperature & Condenser Approach TD / Title 24 Joint Appendix JA2
0.1% for design Wet Bulb Temperature
0.1% for design Dry Bulb Temperature
TBD / Same / Same
Condenser Selection TD
Air Cooled Condenser / 10°F TD for LT air-cooled condensers
15°F TD for MT air-cooled condensers / Same / Same
Note: Condenser approach not included in high priority ECMs to be modeled for 9/15 Webinar.
Condenser Selection TD
Evaporative Cooled
Condenser / Between 20°F and 25°F TD, based on WBT:
78°F WBT: 98°F SCT
72°F WBT: 95°F SCT
68°F WBT: 93°F SCT
Pick the closest TD for the ambient temperature / Same / Same
Note: Condenser approach not included in high priority ECMs to be modeled for 9/15 Webinar.
Condenser and Fluid Cooler Selection TD
Water Cooled Condenser / Condenser approach:20F
Fluid cooler approach:
Same method as evap condenser selection above, less 5 F. / Same / Same
Note: Condenser approach not included in high priority ECMs to be modeled for 9/15 Webinar.
Condenser Specific Efficiency
Air Cooled and Evaporative
Cooled Condensers / 140 BTU/Watt for evaporative @ 100ºF SCT & 70ºF WBT
53 BTU/Watt for air-cooled @ 10ºF TD / Same / [ECM 1.5] Condenser specific efficiency
Water Cooled Condensers and Fluid Cooler / 105 BTU/Watt
Fluid cooler pump is controlled at a fixed speed. Base case pump power is TBD, but not exceeding that required for the base case GPM at 30 PSID. / Same / [ECM 1.5] Condenser specific efficiency
Condenser Fan Motor Power and Efficiency / Motor power is inherent in the base case specific efficiency calculation. / Same / [ECM 1.5] Condenser specific efficiency
Means of Condenser Control / Fixed setpoint strategy
SCT-CTRL = FIXED
SCT-THROTTLE = 2 / [Baseline ECM 1.2] Ambient-following logic
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
OVERRIDE-MIN-SCT = 70 / [ECM 1.2] Ambient-following logic
SCT-CTRL = DRYBULB-RESET or WETBULB-RESET
SCT-AMBIENT-DT = < optimum TD >
SCT-THROTTLE = 1
Means of Condenser Fan Control / Air cooled: fan cycling (based on pressure)
CAPACITY-CTRL = CYCLE-FAN
Evap cooled: two-speed fan control
CAPACITY-CTRL = TWO-SPEED-FAN / [Baseline ECM 1.3] Condenser fan variable speed control
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
OVERRIDE-MIN-SCT = 70
SCT-CTRL = DRYBULB-RESET or WETBULB-RESET
SCT-AMBIENT-DT = < optimum TD >
SCT-THROTTLE = 1 / [ECM 1.3] Condenser fan variable speed control
CAPACITY-CTRL = VAR-SPEED-FAN
Condensing Temperature Setpoint / 80°F SCT
SCT-SETPT = 80
BACKFLOOD-CTRL = FIXED
BACKFLOOD-SETPT = 79 / Same / [ECM 1.1] Floating head pressure control
SCT-CTRL = FIXED
SCT-SETPT = 70
SCT-THROTTLE = 2
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
Pressure Drop at SDT and SCT / 3°F / Same / Same
Heat Recovery (air) / None / Same / Same
Note: Heat recovery (air) not included in high priority ECMs to be modeled for 9/15 Webinar.
Heat Recovery (domestic hot water heating) / None / Same / Same
Note: Heat recovery (DHW) not included in high priority ECMs to be modeled for 9/15 Webinar.
Walk-ins and unit coolers
Unit Cooler Sizing / See Walk-in box definitions below / See Walk-in box definitions below / Same
Note: Unit cooler approach not included in high priority ECMs to be modeled for 9/15 Webinar.
Unit Cooler CFM and wattage / See Walk-in Box Definitions below / Same / [ECM 5.2] Unit cooler specific efficiency
Fan Motor Type / ECM in walk-in evaporator coils for all fan motors < 460V and < 1 hp. Otherwise, PSC fan motors. / Same / Same
Walk-in insulation level / R-25 for cooler walls, ceiling and doors
R-32 for freezer walls, ceiling and doors
R-28 for freezer floors / Same / Same
Walk-ins served by System A
(Walk-in Box Loads per Supermarket Tables, as noted) / MT Suction Group:
(1) Deli Cooler, (8 x 8 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
9,440 Btuh
Coil Air Flow: 1,400 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 5,900
Btuh
(1) Wine Cooler, (11 x 11 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
14,880 Btuh
Coil Air Flow: 2,100 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 9,260
Btuh
(1) Produce Cooler, (20 x 20 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
18,720 Btuh
Coil Air Flow: 2,800 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 21,800
Btuh / Same / Same
Walk-ins served by System B / MT Suction Group:
(1) Bakery Retarder, (10 x 7 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
10,080 Btuh
Coil Air Flow: 1,400 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 6,250
Btuh
(1) Dairy Cooler, (41 x 16 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
28,440 Btuh
Coil Air Flow: 3,900 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 35,550
Btuh
(1) Meat Cooler, (15 x 36 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
24,120 Btuh
Coil Air Flow: 3,250 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 30,150
Btuh
(1) Meat Holding, (13 x 7 x 10) ft3
Evaporator Temp: +26°F
Discharge Temp: +36°F
Coil Capacity @ 10°F TD:
12,000 Btuh
Coil Air Flow: 1,300 cfm
Fan Power: 59 W/motor
Defrost Type: Off Cycle
Walk-in Box Load: 7,550
Btuh / Same / Same
Walk-ins served by System C / LT Suction Group:
(1) Bakery Freezer, (18 x 18 x 10) ft3
Evaporator Temp: -15°F
Discharge Temp: -5°F
Coil Capacity @ 10°F TD:
16,240 Btuh
Coil Air Flow: 2,600 cfm
Fan Power: 59 W/motor
Defrost Type: Hot Gas
Walk-in Box Load: 20,300
Btuh
(1) Deli Freezer, (12 x 8 x 10) ft3
Evaporator Temp: -15°F
Discharge Temp: -5°F
Coil Capacity @ 10°F TD:
10,320 Btuh
Coil Air Flow: 1,950 cfm
Fan Power: 59 W/motor
Defrost Type: Hot Gas
Walk-in Box Load: 8,600
Btuh
(1) Grocery Freezer, (36 x 15 x 10) ft3
Evaporator Temp: -15°F
Discharge Temp: -5°F
Coil Capacity @ 10°F TD:
24,200 Btuh
Coil Air Flow: 3,900 cfm
Fan Power: 59 W/motor
Defrost Type: Hot Gas
Walk-in Box Load: 30,250
Btuh / Same / Same
Walk-ins served by System D / None / Same / Same
Fan Motor Power / Fan motor input wattage. See walk-in box definitions above. / Same / Same
Fan Control / Continuous operation with no VFD
FAN-CONTROL = FAN-EIR-FPLR
FAN-EIR-FPLR = no_unload_fplr / Same / [ECM 5.3] Variable speed fan control
MIN-FLOW-SCH = 0.7 for 22 hrs & 1.0 for 2 hrs
FAN-CONTROL = FAN-EIR-FPLR
FAN-EIR-FPLR = New-EIR-fPLR
New-EIR-fPLR= CURVE-FIT
TYPE= RATIO-FRATIO
ORDER-OF-FIT= CUBIC
INPUT-TYPE= COEFFICIENTS
MIN-INPUT-1 = 0
MAX-INPUT-1 = 1.01
COEFFICIENTS= (0.001,-0.0444,0.3634,0.6808)
Liquid-suction heat exchangers (direct refrigerant) / None / [Baseline ECM 5.4] Liquid-suction heat exchangers
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
OVERRIDE-MIN-SCT = 70
SCT-CTRL = DRYBULB-RESET or WETBULB-RESET
SCT-AMBIENT-DT = < optimum TD >
SCT-THROTTLE = 1 / [ECM 5.4] Liquid-suction heat exchangers
Superheat Gain in LSHX: XX°F (also XX°F RGT)
Subcooling Gain in LSHX: XX°F
TBD
Leaving Gas Temperature / LT: 30°F
MT: 20°F / Same / Same
Defrost Assumptions / Defrost Load: 70% of design load
Defrost Effectiveness: 15%
Quantity of Defrosts per Day: 4
Defrost Duration: 15 minutes / Same / Same
Display Case
Case fan motor type / See display case definitions below / Same / Same
Case light wattage / Fixture efficiency – standard offer published by manufacturer. / Same / [ECM 4.2] LED Lighting in Reach-in Glass Doors
See LED Lighting Spreadsheet Comparison
[ECM 4.3] LED Lighting in Open Cases
See LED Lighting Spreadsheet Comparison
Case lighting configuration assumptions / For multi-deck meat and deli cases: 2 row canopy lights + all shelves lighted (if available)
For multi-deck dairy, beverage and produce cases: 2 row canopy lights + no lighted shelves / Same / Same
Display Case Reach-in Glass Door anti-sweat heater type & wattage / Low wattage doors / Same / Same
Display Case Reach-in Glass Door anti-sweat heater control on glass door cases / None / Same / Same
Note: Reach-in door anti-sweat heater control not included in high priority ECMs to be modeled for 9/15 Webinar.
Night curtains (applicable only to open cases) / None
INF-SCH = SCHEDULE
TYPE = FRACTION
THRU DEC 31 (ALL) (1,24) (0.80,0.80,0.80,0.80,0.80,0.80,
0.80,0.80,0.80,0.80,0.80,0.85,
0.85,0.90,0.90,0.95,0.95,0.95,
0.90,0.90,0.80,0.80,0.80,0.80) / Same / Same
Indirect Cooling for Display Cases / None / Same / Same
Note: Display Case Indirect Cooling not included in high priority ECMs to be modeled for 9/15 Webinar.
Defrost Type / Electric, Off Cycle or Hot Gas – See refrigeration schedule / Same / Same
Note: Defrost methodnot included in high priority ECMs to be modeled for 9/15 Webinar.
Defrost Control / Time initiated, per manufacturers frequency.
Temperature terminated on LT electric defrost only / Same / Same
Note: Demand Defrostnot included in high priority ECMs to be modeled for 9/15 Webinar. Demand Defrost established as a REACH CODE?
Liquid-suction heat exchangers (direct refrigerant) / None / [Baseline ECM 4.8] Liquid-suction heat exchangers
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
OVERRIDE-MIN-SCT = 70
SCT-CTRL = DRYBULB-RESET or WETBULB-RESET
SCT-AMBIENT-DT = < optimum TD >
SCT-THROTTLE = 1 / [ECM 4.8] Liquid-suction heat exchangers
Superheat Gain in LSHX: XX°F (also XX°F RGT)
Subcooling Gain in LSHX: XX°F
TBD
Electronic expansion valves/case controllers / None / Same / Same
Note: Electronic expansion valves/case controllers not included in high priority ECMs to be modeled for 9/15 Webinar.
Leaving Gas Temperature / LT: 30°F
MT: 20°F / Same / Same
Display Case served by System A / MT Suction Group:
(1) Sushi Bar, MD Case
Case Length: 3 ft
Evaporator Temp: +20°F
Discharge Temp: +28°F
Fan Power: 10.3 Watts/ft
No. Fans: 1 fan/12 ft
Canopy Light Watts: 0
Shelf Light Watts: 0
No. Canopy Lights: 0
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 60 mins.
(1) Sushi, MD Case
Case Length: 8 ft
Evaporator Temp: +20°F
Discharge Temp: +28°F
Fan Power: 17.2 Watts/ft
No. Fans: 1 fan/12 ft
Canopy Light W/ft: 19.6
Shelf Light Watts: 0
No. Canopy Lights: 1
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 40 mins.
(1) Sandwich Prep, MD Case
Case Length: 10 ft
Evaporator Temp: +20°F
Discharge Temp: +30°F
Fan Power: 3.71 Watts/ft
No. Fans: 1 fan/12 ft
Canopy Light W/ft: 8
Shelf Light Watts: 0
No. Canopy Lights: 1
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 60 mins.
Case Length: 8 ft
Evaporator Temp: +20°F
Discharge Temp: +30°F
Fan Power: 8.25 Watts/ft
No. Fans: 1 fan/12 ft
Canopy Light W/ft: 24.8
Shelf Light Watts: 0
No. Canopy Lights: 1
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 40 mins.
Case Length: 28 ft
Evaporator Temperature: +20°F
Discharge Temp: +35°F
Fan Power: 13.75 W/ft
No. Fans: 9 fans/12 ft
Canopy Light W/ft: 14.3
Shelf Light W/ft: 7.2
No. Canopy Lights: 2
No. Shelves w/ Lights: 2
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 90 mins.
Case Length: 12 ft
Evaporator Temp: +20°F
Discharge Temp: +30°F
Fan Power: 17.25 W/ft
No. Fans: 3 fans/12 ft
Canopy + Shelf Light
W/ft: 33
No. Canopy Lights: 2
No. Shelves w/ Lights: 3
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 20 mins.
Case Length: 26 ft
Evaporator Temp: +20°F
Discharge Temp: +28°F
Fan Power: 1 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light Watts: 0
Shelf Light Watts: 0
No. Canopy Lights: 0
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 30 mins.
Case Length: 12 ft
Evaporator Temp: +20°F
Discharge Temp: +26°F
Fan Power: 15 Watt/ft
No. Fans: 10 fans/12 ft
Canopy Light Watts: 0
Shelf Light Watts: 7 W/ft
No. Canopy Lights: None
No. Shelves w/ Lights: 1
Defrost Type: Off Cycle
Defrost Freq x Duration:
6 x 20 mins.
Case Length: 32 ft
Evaporator Temp: +26°F
Discharge Temp: +30°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light W/ft: 7.1
No. Canopy Lights: 2
No. Shelves w/ Lights: 6
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 30 mins.
Case Length: 56 ft
Evaporator Temp: +26°F
Discharge Temp: +30°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light Watts: None
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 30 mins.
Case Length: 16 ft
Evaporator Temp: +21°F
Discharge Temp: +29°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 15.3
Shelf Light Watts: 0
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 40 mins. / Same / [ECM 4.2] LED Lighting in Reach-in Glass Doors
See LED Lighting Spreadsheet Comparison
[ECM 4.3] LED Lighting in Open Cases
See LED Lighting Spreadsheet Comparison
Display Case served by System B / Case Length: 16 ft
Evaporator Temp: +20°F
Discharge Temp: +25°F
Fan Power: 24.1 Watt/ft
No. Fans: 1 fans/12 ft
Canopy + Shelf Light
W/ft: 19.3
Canopy Light Watts: ?
Shelf Light Watts: ?
No. Canopy Lights: ?
No. Shelves w/ Lights: ?
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 60 mins.
Case Length: 5 ft
Evaporator Temp: +40°F
Discharge Temp: +45°F
Fan Power: 3.67 Watt/ft
No. Fans: 1 fans/12 ft
Canopy + Shelf Light
W/ft: 19.3
Canopy Light Watts: ?
Shelf Light Watts: ?
No. Canopy Lights: ?
No. Shelves w/ Lights: ?
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 60 mins.
Case Length: 5 ft
Evaporator Temp: +20°F
Discharge Temp: +25°F
Fan Power: 1.83 Watt/ft
No. Fans: 1 fans/12 ft
Canopy + Shelf Light
W/ft: 2.8
Canopy Light Watts: ?
Shelf Light Watts: ?
No. Canopy Lights: ?
No. Shelves w/ Lights: ?
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 60 mins.
Evaporator Temp: +20°F
Discharge Temp: +27°F
Fan Power: 15 Watt/ft
No. Fans: 10 fans/12 ft
Canopy Light W/ft: 13.7
Shelf Light W/ft: 16.4
No. Canopy Lights: 1
No. Shelves w/ Lights: 1
Defrost Type: Off Cycle
Defrost Freq x Duration:
6 x 20 mins.
Evaporator Temp: +28°F
Discharge Temp: +32°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light Watts: 0
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 30 mins.
Case Length: 70 ft
Evaporator Temp: +26°F
Discharge Temp: +30°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light Watts: None
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 30 mins.
Case Length: 6 ft
Evaporator Temp: +26°F
Discharge Temp: +30°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light Watts: 0
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 30 mins.
Case Length: 8 ft
Evaporator Temp: +18°F
Discharge Temp: +25°F
Fan Power: 4.5 Watt/ft
No. Fans: 3 fans/12 ft
Canopy Light W/ft: 14.2
Shelf Light Watts: 0
No. Canopy Lights: 2
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
4 x 40 mins.
Case Length: 12 ft
Evaporator Temp: +20°F
Discharge Temp: +28°F
Fan Power: 5.81 Watt/ft
No. Fans: 9 fans/12 ft
Canopy Light Watts: 0
Shelf Light Watts: 0
No. Canopy Lights: 0
No. Shelves w/ Lights: 0
Defrost Type: Off Cycle
Defrost Freq x Duration:
3 x 46 mins.
Case Length: 12 ft
Evaporator Temp: +22°F
Discharge Temp: +27°F
Fan Power: 11.33 W/ft
No. Fans: 6 fans/12 ft
Canopy Light W/ft: 7.13
Ledge Light W/ft: 7.2
Rail Light W/ft: 7.2
No. Canopy Lights: 2
No. Ledges w/ Lights: 1
No. Rails w/ Lights: 1
Defrost Type: Off Cycle
Defrost Freq x Duration:
1 x 90 mins. / Same / Same
Display Case served by System C / LT Suction Group:
Case Length: 58 drs
Evaporator Temp: -17°F
Discharge Temp: -12°F
Fan Power: 7.5 Watt/dr
No. Fans: 5 fans/5 drs
Std Vertical Light W/dr: 72
Defrost Type: Hot Gas
Defrost Freq x Duration:
1 x 20 mins.
Case Length: 59 drs
Evaporator Temp: -9°F
Discharge Temp: -5°F
Fan Power: 7.5 Watt/dr
No. Fans: 5 fans/5 drs
Std Vertical Light W/dr: 72
Defrost Type: Hot Gas
Defrost Freq x Duration:
1 x 20 mins. / Same / Same
Display Case served by System D / None / Same / Same
Point of Sale (POS) Boxes with Reach-in (RI) Glass Doors / None / Same / Same
POS Box Reach-in Glass Door anti-sweat heater type & wattage / N/A, since no POS Boxes in Base Case / Same / Same
Operation, Occupancy and Schedules
Facility size / 60,700 ft2 (gross area)
57,200 ft2 (conditioned area) / Same / Same
Main Sales Interior Spaces Height / 28 ft / Same / Same
People Heat Gain (Sensible/Latent) / 600 Btu/hr/person / Same / Same
People Occupancy (Main Sales Area) / 200 ft2/person / Same / Same
People Occupancy (Employee Areas) / 100 ft2/person / Same / Same
Schedules / See schedules spreadsheet / Same / Same
Equipment Plug Load / ? W/sf / Same / Same
Building HVAC
Packaged rooftop units (RTU) / Packaged Rooftop Units with EER per Title 24 standards
Number of Packaged Rooftop Units: 8 / Same / Same
Main Air Handling Unit / (1) Main Air Handler Unit for Main Sales area with supply fan motor efficiency per Title 24 / Same / Same
Fan Operation / Always On / Same / Same
Temperature Control / Two fixed setpoints
No night setpoint adjustment / Same / Same
Main Sales HVAC Cooling Setpoint / 74°F / Same / Same
Main Sales HVAC Heating Setpoint / 70°F / Same / Same
Ventilation Control / Always On / Same / Same
Infiltration Load / CFM = ?
SBD: Engineering evaluation from exhaust quantity, store size, orientation, etc. / Same / Same
Envelope & Lighting
Exterior Roof Construction / U-factor based on Title 24 – Table 143-A Prescriptive Envelope Criteria for Roofs
For Sacramento (CZ12), U-factor = 0.039 / Same / Same
Exterior Wall Construction / U-factor based on Title 24 – Table 143-A Prescriptive Envelope Criteria for Walls
For Sacramento (CZ12), U-factor = ? / Same / Same
Roof Absorptivity / AGED Reflectance = 0.55 (Title 24 – Table 143-A) / Same / Same
Skylights / Per Title 24 – Sec 143 (c), approximately 1.65% (3.3% minimum skylight area to skylit ratio * 50% of floor area) of sales area is covered by skylights. / Same / Same
Skylight Characteristics / Skylight Type: Glass, curb
U-factor: 1.11
SHGC: 0.46
Visible Transmittance:
0.552 / Same / Same
Daylighting Controls / Power consumption reduction of lighting by at least 2/3 in response to available daylight.
(three step control: 100%, 67%, 33% & 0%)
Light setpoint: 75 fc / Same / Same
Lighting Power Density (except for Walk-in Coolers & Freezers) / 1.5 Watts/ ft2 (Complete Building Method) / Same / Same
Lighting Power Density (Walk-in Coolers & Freezers) / 0.7 Watts/ ft2 / Same / Same
Lighting Control (Main Sales) / 24 hr store: Always ON 100% / Same / Same
Lighting Control (Offices) / Manual
Lights ON 100% from 8am – 5pm
Lights ON 50% from 5pm – 8am / Same / Same
Lighting Control (Stockroom) / Manual
Lights ON 100% 24 hours/day / Same / Same
Lighting Control (Display Cases) / Manual
Lights ON 100% 24 hours/day / Same / [ECM X.X] Display Case Lighting Control
Lights OFF during non-operating hours
Lighting Control (Walk-in Boxes) / Manual
Lights ON 80% 24 hours/day / Same / Same
Occupancy Sensors in Walk-in Coolers & Freezers / None / Same / Same
Occupancy Sensors in Individual Rooms / ? / Same / Same

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