Buildings.Fluid.DataCenters.Racks.Liquid.Data
Package with data records for racks
Information
This package contains data records for models of the package Buildings.Fluid.DataCenters.Racks.
Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Package Content
| Name | Description |
|---|---|
 Generic
|
Generic data record for liquid-cooled single-phase rack |
| OCP_1kW_OAM_PG25
|
OpenCompute example for 1 kW OAM with PG25 as working fluid |
| OCP_1kW_OAM_Water
|
OpenCompute example for 1 kW OAM with DI water as working fluid |
 BaseClasses
|
Package with base classes for data records |
Buildings.Fluid.DataCenters.Racks.Liquid.Data.Generic
Generic data record for liquid-cooled single-phase rack
Information
Generic data record for a liquid-cooled single-phase IT rack.
Extends from Buildings.Fluid.DataCenters.Racks.BaseClasses.Data.Generic (Generic data record for IT rack).
Contents
| Type | Name | Default | Description |
|---|---|---|---|
| Generic_R_m_flow | theRes | Thermal resistance data | |
| Nominal condition | |||
| HeatFlowRate | PIT_nominal | IT power consumption at u=1, also called Thermal Design Power (TDP) [W] | |
| MassFlowRate | m_flow_nominal | Nominal mass flow rate [kg/s] | |
| PressureDifference | dp_nominal | 50000 | Pressure drop at nominal mass flow rate [Pa] |
| Flow resistance | |||
| Real | n | 1.85 | Flow exponent, n=1 for laminar, n=2 for turbulent |
| Real | deltaM | 0.3 | Fraction of nominal mass flow rate where transition to turbulent occurs |
Modelica definition
Buildings.Fluid.DataCenters.Racks.Liquid.Data.OCP_1kW_OAM_PG25
OpenCompute example for 1 kW OAM with PG25 as working fluid
Information
This specification is for a 1 kW Open Accelerator Module (OAM) based on the Open Compute Project (OCP) report by Chen et al. (2023). The data is based on Figure 7, which is for a single cold plate with PG25 as the working fluid.
Note: The values for dp_nominal, n and deltaM are generic,
as no data for these parameters were found.
References
Cheng Chen, Dennis Trieu, Tejas Shah, Allen Guo, Jaylen Cheng, Christopher Chapman, Sukhvinder Kang, Eran Dagan, Assaf Dinstag, Jane Yao. OCP OAI SYSTEM LIQUID COOLING GUIDELINES. 2023.
Extends from Buildings.Fluid.DataCenters.Racks.Liquid.Data.Generic (Generic data record for liquid-cooled single-phase rack).
Contents
| Type | Name | Default | Description |
|---|---|---|---|
| Nominal condition | |||
| HeatFlowRate | PIT_nominal | IT power consumption at u=1, also called Thermal Design Power (TDP) [W] | |
| MassFlowRate | m_flow_nominal | Nominal mass flow rate [kg/s] | |
| PressureDifference | dp_nominal | 50000 | Pressure drop at nominal mass flow rate [Pa] |
| Flow resistance | |||
| Real | n | 1.85 | Flow exponent, n=1 for laminar, n=2 for turbulent |
| Real | deltaM | 0.3 | Fraction of nominal mass flow rate where transition to turbulent occurs |
Modelica definition
Buildings.Fluid.DataCenters.Racks.Liquid.Data.OCP_1kW_OAM_Water
OpenCompute example for 1 kW OAM with DI water as working fluid
Information
This specification is for a 1 kW Open Accelerator Module (OAM) based on the Open Compute Project (OCP) report by Chen et al. (2023). The data is based on Figure 8, which is for a single cold plate with deionized (DI) water as the working fluid.
Note: The values for dp_nominal, n and deltaM are generic,
as no data for these parameters were found.
References
Cheng Chen, Dennis Trieu, Tejas Shah, Allen Guo, Jaylen Cheng, Christopher Chapman, Sukhvinder Kang, Eran Dagan, Assaf Dinstag, Jane Yao. OCP OAI SYSTEM LIQUID COOLING GUIDELINES. 2023.
Extends from Buildings.Fluid.DataCenters.Racks.Liquid.Data.Generic (Generic data record for liquid-cooled single-phase rack).
Contents
| Type | Name | Default | Description |
|---|---|---|---|
| Nominal condition | |||
| HeatFlowRate | PIT_nominal | IT power consumption at u=1, also called Thermal Design Power (TDP) [W] | |
| MassFlowRate | m_flow_nominal | Nominal mass flow rate [kg/s] | |
| PressureDifference | dp_nominal | 50000 | Pressure drop at nominal mass flow rate [Pa] |
| Flow resistance | |||
| Real | n | 1.85 | Flow exponent, n=1 for laminar, n=2 for turbulent |
| Real | deltaM | 0.3 | Fraction of nominal mass flow rate where transition to turbulent occurs |