[TRNSYS-users] Control of type 941

[Jeff Thornton]

Angeli, 

Why not just have the heat pump charge the storage independently and
then have the load use the storage tank? Then you can send part of the
load flow through the tank, part of the load flow bypassing the tank and
then mix them together to get the desired load supply temperature.
That's typically how it's done in practice. Then you would use an
aquastat or equivalent controller to turn on and off the heat pump to
charge the storage. On the load side you would use a tempering valve
controller to maintain your 10 C delivery temperature. 

Jeff 

---
Jeff Thornton
President - TESS LLC
3 N. Pinckney Street, Suite 202, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton at tess-inc.com

On 11/26/2020 1:10 pm, Filippo Angeli via TRNSYS-users wrote: 

> good evening everyone, 
> I have to simulate the operation of a heat pump (type 941) to power the cooling fan coils. I have a cold storage located between the heat pump and the distribution circuit. in particular I have to build a control that turns the heat pump on and off according to the temperature leaving the storage, which goes into a mixer in which it mixes with part of the flow rate of the return fluid from the fan coils. my goal is to build this control that makes me have a delivery temperature to the fan coils equal to 10 degrees, making the heat pump work when I don't have this temperature. i have to use type 2d. 
> thanks and best regards. 
> 
> Angeli Filippo 
> 
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