[TRNSYS-users] Water-to-water heat pump - Heat rate to load control

[Damien Casetta]

As I was expecting, it´s not working. This idea behind it is just wrong.

Any suggestions in more than welcomed.

Thanks in advance,

On 6 June 2012 19:20, Damien Casetta <damien.casetta at gmail.com> wrote:

> Hi,
>
> I am trying to handle this problem by controlling the temperature. Let me
> remind you that I want to control the heat load of an heat pump in heating
> mode.
>
> Here is how I am trying to proceed :
>
> - I control the temperature exiting the heat pump
> - I fix a temperature set point (with an aquastat - heating mode) at 50 C.
>
> - I vary the supply temperature (entering the heat pump) according to the
> heating demand.
>
> The heating demand is based on hourly loads.
>
> What do you think about it?
>
> I am not very satisfied but I will give it a try. I am sure there is a
> much simpler way to do it.
>
>
> Thanks in advance for your help.
>
> Best regards,
>
>
> On 1 June 2012 18:10, Damien Casetta <damien.casetta at gmail.com> wrote:
>
>> Hi,
>>
>> I am modelling a ground-source heat pump system including a
>> water-to-water heat pump (type 927), a borehole heat exchanger (type
>> 557b) and a building demand profile.
>>
>> I have read a couple of messages in the archives about this topic but I
>> haven´t understood correctly the few addressing my specific issue.
>>
>> Here is my point. I assume the heat pump to meet the building demand. The
>> aim is then to force the heat pump load and observe how the system behaves
>> (COP, ground loop fluid temperatures).
>>
>> I would be able to do this with an external MATLAB code (with COP values
>> interpolated from catalog data) but it would be a shame not to harness
>> TRNSYS potential (there is no need to re-invent the wheel as I read in a
>> previous message).
>>
>> Let me put in other words: how to control a heat pump load?
>>
>> I have read about a trick to handle this, with a "lump" temperature but I
>> don't get the idea behind it. Any other explanations is welcomed.
>>
>>
>>
>> Thanks in advance,
>>
>> Best regards,
>>
>>
>> --
>> *Damien Casetta*
>>
>> *Chalmers University of Technology *| Energy and Environment | Exchange
>> student
>> *INSA Lyon* Génie Energétique et Environnement | Elève ingénieur
>> **
>> +46.7.60.66.31.45
>> +33.6.71.78.03.75
>>
>>
>
>
> --
> *Damien Casetta*
>
> *Chalmers University of Technology *| Energy and Environment | Exchange
> student
> *INSA Lyon* Génie Energétique et Environnement | Elève ingénieur
> **
> +46.7.60.66.31.45
> +33.6.71.78.03.75
>
>


-- 
*Damien Casetta*

*Chalmers University of Technology *| Energy and Environment | Exchange
student
*INSA Lyon* Génie Energétique et Environnement | Elève ingénieur
**
+46.7.60.66.31.45
+33.6.71.78.03.75
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