[TRNSYS-users] Heat Pump mass flow rates (e.g. Type 401)

[Michael Diekerhof]

David,
Unfortunetaly I don´t have access to the TESS library. I´m sorry but I 
dont understand what you were meaning with: /"If you do not, then I 
would imagine that you might be able to come up with a simplified set of 
equations that would give you the gains to the space that you need. "/

Do you mean that I use the GAINS to adjust the radiative and convective 
part ? But how to take the room temperature into account by also 
considering the outlet temperature out of my storage ?? Isn´t there also 
a way to work with HEATING INPUTS ?! I still dont have an idea how to 
cover my heat demand by using the outlet temperature :(

Best,
Michael




Am 19.10.2012 20:15, schrieb David BRADLEY:
> Michael,
>   Ideally, you need a radiator model that will deal with the water 
> side, take room temperature from Type56 and output the convective and 
> radiative gains to the space as outputs. Such a model exists in the 
> TESS HVAC library for Trnsys17 if you have access to it (Type1231). If 
> you do not, then I would imagine that you might be able to come up 
> with a simplified set of equations that would give you the gains to 
> the space that you need.
> Best,
>  David
>
>
> On 10/18/2012 09:24, Michael Diekerhof wrote:
>> David,
>>
>> thanks a lot. I´ll have a look.
>>
>> Could you please help me in another case. My plan is to connect the 
>> HP to a storage tank and then giving a temperature from the storage 
>> (type4) to my type56... How can I realize that my type 56 can be 
>> heated to achieve a constant room temperature of e.g. 20°C ?!
>>
>> Someone told me that I must use HEATING and then INPUT...  but what 
>> if i would like to simulate a simple radiator with a simple inlet 
>> temperature of e.g. 55°C.
>>
>> Do you understand my problem? I dont know how to cover my heat demand 
>> out of the storage.
>>
>> Thanks in advance
>>
>> Best,
>> Michael
>>
>>
>>
>> Am 18.10.2012 16:16, schrieb David BRADLEY:
>>> Michael,
>>>   I would recommend that you look online at manufacturer's sites for 
>>> similarly sized heat pumps. Trane and Carrier both have significant 
>>> amounts of performance data in the product literature parts of their 
>>> sites. You can probably get a good estimate of the flow rates on 
>>> both the condenser and evaporator sizes from them.
>>> Best,
>>>  david
>>>
>>>
>>> On 10/18/2012 03:53, Michael Diekerhof wrote:
>>>> Dear all,
>>>>
>>>> I´m working with the heat pump non-standard type 401 and try to 
>>>> display an air-source heat pump.
>>>>
>>>> I dont have typical values for the Input 2 (evaporator mass 
>>>> flowrate) and Input 4 (condenser mass flowrate).
>>>> The only real connection I´m using is the dry bulb temp, coming 
>>>> from type 15, as the evaporator inlet temperature. For the 
>>>> massflowrates I would like to assume constant values.
>>>>
>>>> How can I adjust an outlet condenser temperature of e.g. 55°C. Just 
>>>> about the massflowrates ?!
>>>>
>>>> Does anyone have experience with heat pump mass flow rates?! I 
>>>> guess it´s not necessary to have expieriences with Type 401.
>>>>
>>>> I´m thankful for any advices.
>>>>
>>>> Best,
>>>>
>>>> Michael
>>>> _______________________________________________
>>>> TRNSYS-users mailing list
>>>> TRNSYS-users at cae.wisc.edu
>>>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>>>
>>
>>
>>
>>
>> Am 18.10.2012 16:16, schrieb David BRADLEY:
>>> Michael,
>>>   I would recommend that you look online at manufacturer's sites for 
>>> similarly sized heat pumps. Trane and Carrier both have significant 
>>> amounts of performance data in the product literature parts of their 
>>> sites. You can probably get a good estimate of the flow rates on 
>>> both the condenser and evaporator sizes from them.
>>> Best,
>>>  david
>>>
>>>
>>> On 10/18/2012 03:53, Michael Diekerhof wrote:
>>>> Dear all,
>>>>
>>>> I´m working with the heat pump non-standard type 401 and try to 
>>>> display an air-source heat pump.
>>>>
>>>> I dont have typical values for the Input 2 (evaporator mass 
>>>> flowrate) and Input 4 (condenser mass flowrate).
>>>> The only real connection I´m using is the dry bulb temp, coming 
>>>> from type 15, as the evaporator inlet temperature. For the 
>>>> massflowrates I would like to assume constant values.
>>>>
>>>> How can I adjust an outlet condenser temperature of e.g. 55°C. Just 
>>>> about the massflowrates ?!
>>>>
>>>> Does anyone have experience with heat pump mass flow rates?! I 
>>>> guess it´s not necessary to have expieriences with Type 401.
>>>>
>>>> I´m thankful for any advices.
>>>>
>>>> Best,
>>>>
>>>> Michael
>>>> _______________________________________________
>>>> TRNSYS-users mailing list
>>>> TRNSYS-users at cae.wisc.edu
>>>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>>>
>>
>>
>

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