[TRNSYS-users] Cooling/heating control signals: TRNSYS-users Digest, Vol 110, Issue 18

[ali shirazi]

On Fri, Feb 14, 2014 at 2:20 AM, <trnsys-users-request at cae.wisc.edu> wrote:

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> Today's Topics:
>
>    1. IF statemenet (metkell yebiyo)
>    2. Re: IF statemenet (Fassnacht, Tillman (IEB))
>    3. type 536 (Messaouda Anis)
>
>
> ---------- Forwarded message ----------
> From: metkell yebiyo <metkell at yahoo.com>
> To: "trnsys-users at cae.wisc.edu" <trnsys-users at cae.wisc.edu>
> Cc:
> Date: Thu, 13 Feb 2014 13:19:08 +0000 (GMT)
> Subject: [TRNSYS-users] IF statemenet
> Dear TRNSYS users,
>
> Could you anyone tell me if it is possible to write an if statement in the
> equation box,
> I am trying to send a control signal based on the outside temperature, if
> outside air temperature is
> greater than 18 deg C then the heat pump would run in cooling mode else if
> the outside air temperature is less than 14 deg C then  the heat pump
> would run in heating mode.
>
> Any suggestions would be appreciated thank you very much.
>
>
> Regards,
> Metkel
>
> Metkel Yebiyo BEng (Hons), MSc
> CEREB PhD Researcher - Ground Source Heat Pumps
> Room T615
> Department of Urban Engineering
> Faculty of Engineering, Science and the Built Environment
> London South Bank University,
> 103 Borough Road,
> London SE1 0AA
> Tel: +44 (0)20 7815 7639
> E: yebiyom at lsbu.ac.uk
>
>
> ---------- Forwarded message ----------
> From: "Fassnacht, Tillman (IEB)" <tillman.fassnacht at kit.edu>
> To: metkell yebiyo <metkell at yahoo.com>, "TRNSYS users mailing list at the
> Solar Energy Lab, UW-Madison" <trnsys-users at cae.wisc.edu>
> Cc:
> Date: Thu, 13 Feb 2014 14:31:01 +0100
> Subject: Re: [TRNSYS-users] IF statemenet
>
> Hello Metkel,
>
>
>
> you have to utilize the greater than and less than function GT/LT in the
> right way.
>
>
>
> GT(Tamb,18)+LT(Tamb,14)*2
>
> è 0 no mode
>
> è 1 cooling mode
>
> è 2 heating mode
>
>
>
> Mit freundlichen Grüßen / Kind Regards,
>
>
> Tillman Faßnacht
>
>
>
> Telefon: 0721 608 43769
>
>
>
> *Von:* trnsys-users-bounces at cae.wisc.edu [mailto:
> trnsys-users-bounces at cae.wisc.edu] *Im Auftrag von *metkell yebiyo
> *Gesendet:* Donnerstag, 13. Februar 2014 14:19
> *An:* trnsys-users at cae.wisc.edu
> *Betreff:* [TRNSYS-users] IF statemenet
>
>
>
> Dear TRNSYS users,
>
>
>
> Could you anyone tell me if it is possible to write an if statement in the
> equation box,
>
> I am trying to send a control signal based on the outside temperature, if
> outside air temperature is
>
> greater than 18 deg C then the heat pump would run in cooling mode else if
> the outside air temperature is less than 14 deg C then  the heat pump
> would run in heating mode.
>
>
>
> Any suggestions would be appreciated thank you very much.
>
>
>
>
>
> Regards,
>
> Metkel
>
>
>
> Metkel Yebiyo BEng (Hons), MSc
>
> CEREB PhD Researcher - Ground Source Heat Pumps
>
> Room T615
>
> Department of Urban Engineering
>
> Faculty of Engineering, Science and the Built Environment
>
> London South Bank University,
>
> 103 Borough Road,
>
> London SE1 0AA
>
> Tel: +44 (0)20 7815 7639
>
> E: yebiyom at lsbu.ac.uk
>
>
> ---------- Forwarded message ----------
> From: Messaouda Anis <anis_messa at yahoo.fr>
> To: "TRNSYS-users at cae.wisc.edu" <TRNSYS-users at cae.wisc.edu>
> Cc:
> Date: Thu, 13 Feb 2014 15:19:56 +0000 (GMT)
> Subject: [TRNSYS-users] type 536
> Dear Trnsys_users,
> For the type 536
> please it is possible to change the diameter of a tube.
> thank you
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>


-- 
*Ali shirazi*
PhD Candidate
School of Mechanical and Manufacturing Engineering
The University of New South Wales
Sydney NSW 2052
Australia
Email:
ali.shirazee at gmail.com
a.shirazi at student.unsw.edu.au
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