[TRNSYS-users] differential controller

[SHERIF SAIED]

Hello Mukhtar,
I have a thermal storage tank after boiler as a heating tank and another
one after absorption chiller as a cooling tank so I think to control the
boiler on/off and works in ranges I mentioned in summer and winter I need
to use this differential one .as for the room I will consider what David
said about the simple thermostat and will use it , but still the problem
for me about the boiler. thanks for advance for helping me.

Regards,
Sherif



On Fri, Jul 9, 2021 at 6:54 PM Mukhtar Abeid via TRNSYS-users <
trnsys-users at lists.onebuilding.org> wrote:

> Dear Sherif
>
> What I know about the differential controller is that it's used in case of
> thermal storage exist. However, in your case there is no storage. So, l
> don't think that it is a good idea to use the differential. There are some
> other good choices.
>
> Good luck
>
>
>
>
>
>
>
> في الجمعة، ٩ يوليو ٢٠٢١ ٠٢:٤٤ SHERIF SAIED via TRNSYS-users <
> trnsys-users at lists.onebuilding.org> كتب:
>
>> checked Thanks, I have another question I used a differential
>> controller to the boiler type 700 and need temperature out of it in the
>> range between 80-90 in summer(cooling season) to supply absorption chiller
>> and need temperature in winter(heating season) in the range of 30-45. I
>> linked the upper input Temp.(Th) to outlet of the boiler, linked the lower
>> input Temp.(TL) to the return flow from the tank to the boiler. for
>> monitoring Temp. (Tin),upper dead band(dt) and lower dead band(dt) I don't
>> really know how to link or what value should be. could anyone help,
>> please?, Thanks in advance.
>>
>> On Tue, Jul 6, 2021 at 8:32 PM David BRADLEY <d.bradley at tess-inc.com>
>> wrote:
>>
>>> Sherif,
>>>
>>>   There are a number of examples in the
>>> .\Trnsys18\Examples\HVACTemplates\ folder that will give you some ideas
>>> about how to implement control of HVAC systems. Have a look at the
>>> 10-Examples.pdf documentation in parallel with those examples. I don't
>>> think that any of them have a radiant floor in them but the principals are
>>> the same.
>>>
>>> You might also have a look at the example:
>>>
>>> .\Trnsys18\Examples\Feedback Control\SunSpace - Floor heating PID
>>> controller.tpf
>>>
>>> Its controls are possibly more complicated than the ones in your case
>>> but it will show how to do the system-level connections between Type56's
>>> active layers and the HVAC system.
>>>
>>> kind regards,
>>>
>>>  David
>>>
>>>
>>>
>>> On 07/06/2021 10:20, SHERIF SAIED via TRNSYS-users wrote:
>>>
>>> Hello everyone,
>>>
>>> I need help in some controls on radiant cooling and heating system model
>>> like type 165 to control either boiler for heating system or control
>>> building temperatures, also need to control on different components for the
>>> cooling system to work uniformly according to season if summer cooling
>>> system work and if winter will work the heating system and so on . I have
>>> problems in PPD and PMV for building through all year. if anyone would help
>>> or have an example model for how I can set these controllers in two systems?
>>> Regards,
>>> --
>>> *Sherif Saied.*
>>> *Tel: (*+2)01004419468 / (+2)01124348957
>>>
>>>
>>> _______________________________________________
>>> TRNSYS-users mailing listTRNSYS-users at lists.onebuilding.orghttp://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>>>
>>> --
>>> ***************************
>>> David BRADLEY
>>> Principal
>>> Thermal Energy Systems Specialists, LLC
>>> 3 North Pinckney Street - suite 202
>>> Madison, WI  53703 USA
>>>
>>> P:+1.608.274.2577d.bradley at tess-inc.com
>>> http://www.tess-inc.comhttp://www.trnsys.com
>>>
>>>
>>
>> --
>> *Sherif Saied.*
>> *Tel: (*+2)01004419468 / (+2)01124348957
>>
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-- 
*Sherif Saied.*
*Tel: (*+2)01004419468 / (+2)01124348957
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