Re: constant temperature unwanted

[hgjh kgkgf <arkokaffee@xxxxxxxxx>]

Thank you very muich for your help, 
But there is one think what I do not understand. I
have already made a system externaly in Iisibat. Right
now, I connect this to an Input for the temperatur of
Ventilation. The connect it with the cooling/heating
type in Prebid, I could just use an Input for limited
power at type 56 by the typicalformula: Q=m*c*/Ti-To/

I would like to turn of the heating and cooling mode
in prebid, but what inputs should I use instead? I did
not found one for an airmassflow.

What if I got an radiation system? I should connect
the massflow to some selfmade Input in Prebid, but I
do not know where. I can not just produce an Input for
massflow. It should be jused on some place in prebid.
Or am I wrong?

Hope to hear from you again. Thank you so much foryour
help!
Arko



--- David Bradley <bradley@tess-inc.com> wrote:
> Dear Arko,
>    Type56 and most of the other building models are
> set up to allow 
> simulation of two different things. First, you can
> obtain the building 
> loads - meaning that TRNSYS computes the amount of
> energy that must be 
> added to or removed from a space in order to
> maintain a set point 
> temperature. As soon as you define a setpoint, the
> building models will not 
> allow the zone temperatures to go above (in the case
> of a cooling setpoint) 
> or below (in the case of heating) that point.
> Instead, they will report how 
> much energy was required to maintain that
> temperature. Essentially you are 
> defining some ideal heating and cooling equipment
> for the building. The 
> zone temperature will float between the two
> setpoints. If you want the 
> building temperature to float without bounds, then
> you can either make the 
> setpoints very high for cooling and very low for
> heating (insuring that the 
> equipment will never turn on) or, you can turn off
> heating and cooling in 
> Prebid and define your system externally.
> Cheers,
>    David
> 
> At 06:39 AM 9/9/2002 -0700, you wrote:
> 
> >Dear Trnsys users,
> >
> >I try to simulate an air heating and cooling system
> in a building. (Type 
> >56) It has good u-values and 4 Zones. Convective
> Part of heating system is 
> >100%.
> >
> >I made an Input for the set point (20 Wintertime,
> 26 Summertime) of the 
> >Zone temperature and connected it to Equation/Type
> 14. What I do not 
> >understand is, that the temperature in this
> building is exact on the 
> >desired setpoint temperature. Usually it should not
> be that, because walls 
> >store energy and the dead Band is 2 Kelvin. Why is
> there no thermal 
> >behavior of that building?
> >
> >Thank you for consideration, I hope to hear from
> anybody soon.
> >
> >Arko K
> >
> >PS
> >
> >Also, I would like to know which Type is the best
> for a simulation of a 
> >PAC-unit.
> >
> >
> >
> >Do You Yahoo!?
>
><http://rd.yahoo.com/finance/mailsig/new/*http://finance.yahoo.com>Yahoo!
> 
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> 
>
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> 
> 
> Thermal Energy System Specialists (TESS)
> David BRADLEY                           2916
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> Project Engineer                           Madison,
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> Phone: (608) 274-2577 USA
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> 
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