Re: about schedule

["Anil Misra" <anil_misra@xxxxxxxxxxxxxxxx>]

Dear Michaël and David,
I thank both of you for the help sent to solve my problems about the
schedule. I have been able to use two forcing functions and equations to get
the desired results. After reading your mails, I read the description of
forcing functions in the manual thoroughly, and came to know about the
periodic behaviour of the forcing functions.
Thanks once again and regards,
Anil Misra


----- Original Message -----
From: Michaël Kummert <kummert@engr.wisc.edu>
To: <trnsys@relay.doit.wisc.edu>
Sent: Tuesday, August 26, 2003 20:13
Subject: Re: about schedule


Dear Anil Misra,

I don't think you can define a fortnightly schedule in Prebid. You can
only have weekly and daily schedules so Prebid (or more exactly Type56)
has no way to distinguish between "one Monday" and "another Monday".

A weekly schedule actually switches between different daily schedules
according to the day of the week, which could be seen as "multiplying"
schedules. If you need to add the effect of an ON-OFF schedule to a
variable setpoint, you can use one schedule for the temperature setpoint
and another schedule for the maximum power. Using a very high setpoint
for cooling or a very low setpoint for heating will of course give the
same results.

Creating schedules in TRNSYS (and using inputs to Type56 rather than
"internal schedules") will give you more flexibility, at the cost of
more connections in the TRNSYS project.

I hope this helps,

Michaël Kummert

Anil Misra wrote:
> Dear trnsys users,
>
> I want to define a fortnightly schedule of the setpoints for a cooling
> system attached to a building. At the same time, the system has to be
> switched off in the night and during weekends.
>
> I need to know how this can be scheduled. is there any possibility to
> multiply two schedules in prebid or this has to be done somehow in the
> dck file.
>
> Please help me if someone has already used a trick to achieve this.
>
> Thanks
>
> Anil Misra
> Solar Energy Centre (MNES)
> New Delhi

--
_________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert@engr.wisc.edu

SEL Web Site: http://sel.me.wisc.edu
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys