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Re: [TRNSYS-users] Variable heat pump question



On 2021-10-20 14:26, Erich Ryan via TRNSYS-users wrote:
I am modeling a variable speed water to water heat pump using the
multi dimensional interpolator, and I want to be able to change the
setpoint of the heat pump. Currently, I am reading the return
temperature and inlet flow rate, and inputting that into an equation
to calculate the load necessary to have my output equal to my desired
setpoint temperature. I am controlling the setpoint temperature based
on an equation that defines time periods when it should be higher or
lower.

Erich,

What are you reading from the interpolator model - and based on what variables? For example, are you reading COP based on the entering fluid conditions? Is the part load factor a variable? Let us know and we can help you through your issue.

Jeff

--
Jeff W. Thornton
President
Thermal Energy System Specialists LLC
3 N. Pinckney Street, Suite 202
Madison WI 53703 USA
(608) 274-2577
www.tess-inc.com