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Hi everyone,

I’m modeling a domestic hot water (DHW) system for a production plant in Spain where the source is waste heat from chillers at 45 °C. The real system uses a water‐source heat pump (WSHP) and a storage tank with no internal heating element—all heating is done by the WSHP. However, my simulation tool (DesignBuilder) only provides an air‐source heat pump for DHW, and I can’t directly model a water‐to‐water system.

Has anyone dealt with this? What’s the best workaround to configure a “fake” air‐to‐water heat pump that behaves like a WSHP at 45 °C inlet? Any suggestion is appreciated.

C:\fakepath\Air source Heat pump settings.jpg

Thanks, Julio

Hi everyone,

I’m modeling a domestic hot water (DHW) system for a production plant in Spain where the source is waste heat from chillers at 45 °C. The real system uses a water‐source heat pump (WSHP) and a storage tank with no internal heating element—all heating is done by the WSHP. However, my simulation tool (DesignBuilder) only provides an air‐source heat pump for DHW, and I can’t directly model a water‐to‐water system.

Has anyone dealt with this? What’s the best workaround to configure a “fake” air‐to‐water heat pump that behaves like a WSHP at 45 °C inlet? Any suggestion is appreciated.

C:\fakepath\Air source Heat pump settings.jpg C:\fakepath\SHW heat pump efficiency.png

Thanks, Julio

Hi everyone,

I’m modeling a domestic hot water (DHW) system for a production plant in Spain where the source is waste heat from chillers at 45 °C. The real system uses a water‐source heat pump (WSHP) and a storage tank with no internal heating element—all heating is done by the WSHP. However, my simulation tool (DesignBuilder) only provides an air‐source heat pump for DHW, and I can’t directly model a water‐to‐water system.

Has anyone dealt with this? What’s the best workaround to configure a “fake” air‐to‐water heat pump that behaves like a WSHP at 45 °C inlet? Any suggestion is appreciated.

ASHP settings in Design Builder (E+): C:\fakepath\Air source Heat pump settings.jpg Actual heat pump specifications: C:\fakepath\SHW heat pump efficiency.png

Thanks, Julio

Hi everyone,

I’m modeling a domestic hot water (DHW) system for a production plant in Spain where the source is waste heat from chillers at 45 °C. The real system uses a water‐source heat pump (WSHP) and a storage tank with no internal heating element—all heating is done by the WSHP. However, my simulation tool (DesignBuilder) only provides an air‐source heat pump for DHW, and I can’t directly model a water‐to‐water system.

Has anyone dealt with this? What’s the best workaround to configure a “fake” air‐to‐water heat pump that behaves like a WSHP at 45 °C inlet? Any suggestion is appreciated.

ASHP settings in Design Builder (E+): C:\fakepath\Air source Heat pump settings.jpg

Hi everyone,

I’m modeling a domestic hot water (DHW) system for a production plant in Spain where the source is waste heat from chillers at 45 °C. The real system uses a water‐source heat pump (WSHP) and a storage tank with no internal heating element—all heating is done by the WSHP. However, my simulation tool (DesignBuilder) only provides an air‐source heat pump for DHW, and I can’t directly model a water‐to‐water system.

Has anyone dealt with this? What’s the best workaround to configure a “fake” air‐to‐water heat pump that behaves like a WSHP at 45 °C inlet? Any suggestion is appreciated.

ASHP settings in Design Builder (E+): C:\fakepath\Air source Heat pump settings.jpg

Actual heat pump specifications: C:\fakepath\SHW heat pump efficiency.png

Thanks, Julio