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IBM / rl-testbed-for-energyplus

Reinforcement Learning Testbed for Power Consumption Optimization using EnergyPlus
MIT License
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Confusions about the ITE object #80

Open ZHANG-QINGANG opened 2 years ago

ZHANG-QINGANG commented 2 years ago

Hi,

In the object “ElectricEquipment:ITE: AirCooled”, the CPU Power curve follows:

image

May I know how to get this formula? Based on my understanding, when U=1,T_inlet=15, f=1. When U=1,T_inlet=25, f=2. The server's power consumption will double when the ITE inlet temperature increases from 15 to 25. Will ITE inlet temperature affect server power consumption so significantly?

image

antoine-galataud commented 2 years ago

@ZHANG-QINGANG Hi!

The CPU power curve field of ElectricEquipment:ITE:AirCooled is described here. Data Center Servers Power fLoadTemp is the default and is described in the IDF as follows:

Curve:Biquadratic,
    Data Center Servers Power fLoadTemp,  !- Name
    -1.0,                    !- Coefficient1 Constant
    1.0,                     !- Coefficient2 x
    0.0,                     !- Coefficient3 x**2
    0.06667,                 !- Coefficient4 y
    0.0,                     !- Coefficient5 y**2
    0.0,                     !- Coefficient6 x*y
    0.0,                     !- Minimum Value of x
    1.5,                     !- Maximum Value of x
    -10,                     !- Minimum Value of y
    99.0,                    !- Maximum Value of y
    0.0,                     !- Minimum Curve Output
    99.0,                    !- Maximum Curve Output
    Dimensionless,           !- Input Unit Type for X
    Temperature,             !- Input Unit Type for Y
    Dimensionless;           !- Output Unit Type

Please see also the discussion in https://github.com/IBM/rl-testbed-for-energyplus/issues/10