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Server Module Calculator

Common Parameters
Installation Location:
Cost of Electricity:
$ per kWh The cost of electricity to use for comparison
Total Server Power:
kilowatts The total power of installed IT equipment.
Server Module Parameters
Design Input Air Temperature:
°F Usually selected to be near the annual high temperature.
Room Dewpoint Temperature:
°F The dewpoint temperature for air inside the facility.
The Server Module recirculates air as needed to maintain this minimum temperature in the input plenum.
Server Baseplate Temperature:
°F The nominal temperature of baseplates of installed IT equipment.
This matches the output air temperature.
Max Duct Pressure Drop:
inches of water Ducts will be designed for this pressure drop when the system is operating at the design input air temperature.
Max Filter Pressure Drop:
inches of water Filtration will be designed for this pressure drop when the system is operating at the design input air temperature.
Fan Efficiency:
% The efficiency of the blowers selected for the Server Module
Module Size:
12-inch panels The Standard Server Module has 640 panels.
The Pilot Server Module has 64 panels.
Alternative Conventional Cooling System Parameters
Cost of Alternative:
$ per kW The capital cost of the available alternative cooling solution per kilowatt of heat load
Ave Cooling PUE of Alternative:
The annualized Cooling PUE of the available alternative cooling solution per watt of heat load
Max Cooling PUE of Alternative:
The maximum Cooling PUE of the available alternative cooling solution per watt of heat load
Water Usage of Alternative:
liters per kWh The amount of water consumed by available alternative cooling solution per kWh consumed by IT equipment. This metric is also known as the Water Usage Effectiveness (WUE). The average water consumption just for power generation is 1.8 liters per kWh (source: NREL). Data center water usage may be as high as 1 gallon (3.78541 liters) per kWH (source: Amazon's James Hamilton).
Server Fan Power:
% The percentage of server power that goes to server fans when using the available alternative cooling solution

Summary

LocationPhoenix, AZ
Average Cooling PUE1.021
Annual High Temperature111.9 °F
Departure Time8 hours
Max Server Baseplate Temperature141.9 °F
Nominal Baseplate Heat Flux Density1.04 W / inch2
Nominal Baseplate Power500 W

Savings

Available
Alternative
Forced Physics
Server Modules
Savings
Capital Costs of Cooling System$ 1,777,777$ 1,280,000$ 497,777
1-Year Power Costs of Cooling System$ 72,675$ 4,057$ 68,617
15-Year Power Costs of Cooling System$ 1,090,133$ 60,869$ 1,029,263
1-Year Water Usage1.2 million gal0 gal1.2 million gal
15-Year Water Usage18.5 million gal0 gal18.5 million gal
Average Power Used by Cooling System118 kW6 kW111 kW
Peak Power Used by Cooling System296 kW26 kW270 kW

Performance

Cooling PUEOutdoor Ambient Air Temperature (°F)Cooling PUE50.060.070.080.090.0100.0110.01.01.011.021.031.041.051.061.071.08Fan PowerOutdoor Ambient Air Temperature (°F)Fan Power (kilowatts)50.060.070.080.090.0100.0110.00.010.020.030.0
Flow RateOutdoor Ambient Air Temperature (°F)Flow Rate (CFM)50.060.070.080.090.0100.0110.010,000.020,000.030,000.040,000.0Pressure DropOutdoor Ambient Air Temperature (°F)Pressure Drop (inches of water)50.060.070.080.090.0100.0110.01.02.03.04.0

One Year in Phoenix, AZ

Hourly Cooling PUE in Phoenix, AZ (ave=1.021, max=1.082)One YearHourly Cooling PUEJan 1Dec 311.01.011.021.031.041.051.061.071.081.09
Hourly Temperature in Phoenix, AZ (ave=74.8°F, max=111.9°F)One YearHourly Temperature (°F)Jan 1Dec 3130.040.050.060.070.080.090.0100.0110.0120.0
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