2011 Title 24 Supermarket CASE
LARGE SUPERMARKET: Simulation Assumptions Document – August 3, 2010
Air-Cooled Condenser
Large
Supermarket
Evap-Cooled Condenser
Fluid Cooler
Central
Distributed
Central
Central
MAC
MAD
MEC
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
[Baseline ECM 3.2]
Floating head pressure
control
Indirect
systems
(optional):
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
None
CAPACITY-CTRL = VAR-SPEEDFAN
[ECM 3.2]
Indirect System=ON
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
Page 1
Spreadsheet Comparison
LED Lighting in Open
Cases
See LED Lighting
Spreadsheet Comparison
Compressor
Compressor
Type
MAC, MEC, MFC: Semihermetic compressors
Same
Same
Same
Same
LT Scroll: ZF40KVE
MT Scroll: ZB92KCE
(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
See representative
compressor
spreadsheets
Same
Same
Fixed setpoint electronic
sequencing control with
on/off cycling
Same
[ECM 2.3] Suction
setpoint automation
MAD, MFD: Scroll
compressors
Compressor
Selection
MAC, MEC, MFC:
LT Semi-Hermetic:
06DR316
MT Semi-Hermetic:
06DR725
MAD, MFD:
Suction
Groups
(RGT = Return
Gas
Temperature)
Means of
compressor
control
TEMP-CTRL = LOAD-RESET
MIN-TEMP-SETPT = design
suction temperature per
refrigeration schedule
MAX-TEMP-SETPT = design SST
+ 5°F
DESIGN-SST = design
suction temperature per
refrigeration schedule
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
Page 2
Condenser
Type
MAC, MAD: Air cooled
Same
Same
Same
Same
10°F TD for LT air-cooled
condensers
15°F TD for MT aircooled condensers
Same
Same
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
Condenser approach:
20F
Fluid cooler approach:
Same method as evap
condenser selection
above, less 5 F.
Same
140 BTU/Watt for
evaporative @ 100ºF SCT
& 70ºF WBT
Same
[ECM 1.5] Condenser
specific efficiency
Same
[ECM 1.5] Condenser
specific efficiency
MEC: Evaporative cooled
MFC, MFD: Fluid cooler
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
Condenser
Selection TD
Air Cooled
Condenser
Condenser
Selection TD
Evaporative
Cooled
Condenser
Condenser
and Fluid
Cooler
Selection TD
Water
Cooled
Condenser
Condenser
Specific
Efficiency
Air Cooled
and
Evaporative
Cooled
Condensers
Water Cooled
Condensers
and Fluid
Cooler
Note: Condenser
approach not included in
high priority ECMs to be
modeled for 9/15
Webinar.
Same
Note: Condenser
approach not included in
high priority ECMs to be
modeled for 9/15
Webinar.
Same
Same
Note: Condenser
approach not included in
high priority ECMs to be
modeled for 9/15
Webinar.
53 BTU/Watt for aircooled @ 10ºF TD
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.
Page 3
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
[Baseline ECM 1.2]
Ambient-following logic
[ECM 1.2] Ambientfollowing logic
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
Means of
Condenser Fan
Control
Air cooled: fan cycling
(based on pressure)
[Baseline ECM 1.3]
Condenser fan variable
speed control
[ECM 1.3] Condenser fan
variable speed control
SCT-CTRL = FIXED
SCT-THROTTLE = 2
CAPACITY-CTRL = CYCLE-FAN
CAPACITY-CTRL = VAR-SPEEDFAN
CAPACITY-CTRL = TWO-SPEEDFAN
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
Condensing
Temperature
Setpoint
80°F SCT
Same
Pressure Drop
at SDT and SCT
3°F
Same
Same
Heat Recovery
(air)
None
Same
Same
Heat Recovery
(domestic hot
water heating)
None
Evap cooled: two-speed
fan control
SCT-SETPT = 80
BACKFLOOD-CTRL = FIXED
BACKFLOOD-SETPT = 79
[ECM 1.1] Floating head
pressure control
SCT-CTRL = FIXED
SCT-SETPT = 70
SCT-THROTTLE = 2
BACKFLOOD-CTRL=FIXED
BACKFLOOD-SETPT = 69
Note: Heat recovery (air)
not included in high
priority ECMs to be
modeled for 9/15
Webinar.
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
Unit Cooler
CFM and
wattage
See Walk-in Box
Definitions below
Same
[ECM 5.2] Unit cooler
specific efficiency
Note: Unit cooler
approach not included in
high priority ECMs to be
modeled for 9/15
Webinar.
Page 4
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
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
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
Same
Same
Same
Same
(Walk-in Box
Loads per
Supermarket
Tables, as
noted)
Walk-ins
served by
System B
Page 5
Walk-ins
served by
System C
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
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
Same
Same
Page 6
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
Walk-ins
served by
System D
None
Same
Same
Fan Motor
Power
Fan motor input
wattage. See walk-in box
definitions above.
Continuous operation
with no VFD
Same
Same
Same
[ECM 5.3] Variable
speed fan control
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)
FAN-CONTROL = FAN-EIR-FPLR
FAN-EIR-FPLR = no_unload_fplr
[Baseline ECM 5.4]
Liquid-suction heat
exchangers
[ECM 5.4] Liquid-suction
heat exchangers
Superheat Gain in LSHX:
XX°F (also XX°F RGT)
Subcooling Gain in LSHX:
XX°F
TBD
Liquid-suction
heat
exchangers
(direct
refrigerant)
None
Leaving Gas
Temperature
LT: 30°F
MT: 20°F
Same
Same
Defrost
Assumptions
Defrost Load: 70% of
design load
Same
Same
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
Page 7
Defrost Effectiveness:
15%
Quantity of Defrosts per
Day: 4
Defrost Duration: 15
minutes
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)
Same
Same
For multi-deck dairy,
beverage and produce
cases: 2 row canopy
lights + no lighted
shelves
Display Case
Reach-in Glass
Door antisweat heater
type &
wattage
Low wattage doors
Same
Same
Display Case
Reach-in Glass
Door antisweat heater
control on
glass door
cases
None
Same
Same
Night curtains
(applicable
only to open
cases)
None
Indirect
Cooling for
None
Note: Reach-in door antisweat heater control not
included in high priority
ECMs to be modeled for
9/15 Webinar.
Same
Same
Same
Same
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)
Note: Display Case
Page 8
Display Cases
Defrost Type
Defrost
Control
Indirect Cooling not
included in high priority
ECMs to be modeled for
9/15 Webinar.
Electric, Off Cycle or Hot
Gas – See refrigeration
schedule
Same
Time initiated, per
manufacturers
frequency.
Same
Same
Note: Defrost method
not included in high
priority ECMs to be
modeled for 9/15
Webinar.
Same
Note: Demand Defrost
not included in high
priority ECMs to be
modeled for 9/15
Webinar. Demand
Defrost established as a
REACH CODE?
Temperature terminated
on LT electric defrost
only
[Baseline ECM 4.8]
Liquid-suction heat
exchangers
[ECM 4.8] Liquid-suction
heat exchangers
Superheat Gain in LSHX:
XX°F (also XX°F RGT)
Subcooling Gain in LSHX:
XX°F
TBD
Liquid-suction
heat
exchangers
(direct
refrigerant)
None
Electronic
expansion
valves/case
controllers
None
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:
Same
[ECM 4.2] LED Lighting
in Reach-in Glass Doors
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
Same
Same
Note: Electronic
expansion valves/case
controllers not included
in high priority ECMs to
be modeled for 9/15
Webinar.
See LED Lighting
Spreadsheet Comparison
[ECM 4.3] LED Lighting
in Open Cases
See LED Lighting
Spreadsheet Comparison
Page 9
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
Page 10
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
Page 11
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.
Display Case
served by
System B
Same
Same
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: ?
Page 12
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
Page 13
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
Page 14
Display Case
served by
System C
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.
LT Suction Group:
Same
Same
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.
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 antisweat heater
type &
wattage
N/A, since no POS Boxes
in Base Case
Same
Same
Same
Same
Same
Same
Operation, Occupancy and Schedules
Facility size
60,700 ft2 (gross area)
57,200 ft2 (conditioned
area)
Main Sales
Interior Spaces
28 ft
Page 15
Height
People Heat
Gain
(Sensible/Late
nt)
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
? W/sf
Same
Same
Same
Same
Packaged Rooftop Units
with EER per Title 24
standards
Number of Packaged
Rooftop Units: 8
(1) Main Air Handler Unit
for Main Sales area with
supply fan motor
efficiency per Title 24
Always On
Same
Same
Same
Same
Same
Same
Two fixed setpoints
No night setpoint
adjustment
74°F
Same
Same
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
Equipment
Plug Load
Building HVAC
Packaged
rooftop units
(RTU)
Main Air
Handling Unit
Fan Operation
Temperature
Control
Main Sales
HVAC Cooling
Setpoint
Page 16
Envelope & Lighting
Exterior Roof
Construction
U-factor based on Title
24 – Table 143-A
Prescriptive Envelope
Criteria for Roofs
Same
Same
Same
Same
For Sacramento (CZ12),
U-factor = 0.039
Exterior Wall
Construction
U-factor based on Title
24 – Table 143-A
Prescriptive Envelope
Criteria for Walls
For Sacramento (CZ12),
U-factor = ?
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.
Same
Same
(three step control:
100%, 67%, 33% & 0%)
Light setpoint: 75 fc
Lighting Power
Density
(except for
Walk-in
Coolers &
Freezers)
1.5 Watts/ ft2 (Complete
Building Method)
Same
Same
Lighting Power
Density (Walkin Coolers &
Freezers)
0.7 Watts/ ft2
Same
Same
Lighting
Control (Main
24 hr store: Always ON
100%
Same
Same
Page 17
Sales)
Same
Same
Lighting
Control
(Stockroom)
Manual
Lights ON 100% from
8am – 5pm
Lights ON 50% from 5pm
– 8am
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
Lighting
Control (Walkin Boxes)
Manual
Lights ON 80% 24
hours/day
Same
Lights OFF during nonoperating hours
Same
Occupancy
Sensors in
Walk-in
Coolers &
Freezers
None
Same
Same
Occupancy
Sensors in
Individual
Rooms
?
Same
Same
Lighting
Control
(Offices)
Page 18