Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Hi Julio, DesignBuilder can do this. Simply add a DHW loop (not a HP water heater in a zone), edit the water heater, check the external heating plant connection, and uncheck the internal heating element. Set the source water flow rate to the design flow of the W2WHP.
add a heat pump heating loop and connect the demand side of the loop to the water heater.
You can connect the chiller condenser loop to the DHW loop using fluid heat exchangers.
| | 2 | No.2 Revision |
Hi Julio,
DesignBuilder can do this.
Simply add Add a DHW loop (not a HP water heater in a zone), edit the water heater, check the external heating plant connection, and uncheck the internal heating element. Set the source water flow rate to the design flow of the W2WHP.
add a heat pump heating loop and connect the demand side of the loop to the water heater.
You can connect the chiller condenser loop to the DHW loop using fluid heat exchangers.
| | 3 | No.3 Revision |
Hi Julio, DesignBuilder can do this. Add a DHW loop (not a HP water heater in a zone), edit the water heater, check the external heating plant connection, and uncheck the internal heating element. Set the source water flow rate to the design flow of the W2WHP.
add a heat pump heating loop and connect the demand side of the loop to the water heater.
You can connect the chiller condenser loop to the DHW loop using fluid heat exchangers.
update: 3/13/2025 Attached are two configurations. one is a single condenser loop connected to the chiller and the HP heating loop. This would just be mixing. The other is dedicated condenser loops and an intermediate condenser loop. This option would provided better temperature and flow control. C:\fakepath\chiller and HP heater to same condenser loop.PNG C:\fakepath\chiller and HP heater dedicated condenser loops and intermediate cond loop.PNG
