[TRNSYS-users] Heat pump model which can meet a specific load

[Technical Support]

Knut Erik,
 We run into this from time to time as well. If you already have loads
determined (either by another software or from another project) you can
read those loads with a Type9 data reader and then use one of the
"flowstream loads" components in the TESS Loads and Structures library.
Essentially, these components are designed to impose a load on a flow
stream (either liquid or air) and return that flow stream to the system
either hotter or colder depending on whether it was a heating or a
cooling load.

 If you do not have loads already, there is a synthetic building component
in the same TESS Library. You can adjust a number of parameters and
construct a curve that looks like a realistic building load, then impose
that load on your system.

Kind regards,
 David



Technical Support Team
Thermal Energy System Specialists, LLC
2916 Marketplace Dr, Suite 104
Madison, WI 53719
techsupport at tess-inc.com

>----- Original Message -----
Subject: [TRNSYS-users] Heat pump model which can meet a specific load
Date: Fri, May 9, 2008 9:01
From: knut.erik.enerstvedt at niva.no

> Dear TRNSYS users,
>
> I wish to model the operation of a simplified water-source heat pump system
> with the possibility of varying delivered heating power based on expected
> heating requirements, but without having to include a building with
> temperature level control, as the most important aspect of the simulation
> is to determine the amount of heat being extracted from the boreholes Does
> anyone have a suggestion on how to do this as realistically as possible?
> The only possibility I have seen so far for adjusting the delivered power
> on water source heat pumps, and thereby determining the energy transfer
> rate from the boreholes, is to scale rated power and capacity. Does anyone
> know if there excists a heat pump component that can be adjusted to meet a
> specific load?
>
> Kind regards
> Knut Erik Enerstvedt
>
>
>
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