[TRNSYS-users] Type 70 TRNSYS-users Digest, Vol 64, Issue 22

[Dapeng Li]

Dear David, Jeff,

I got it and thank you for your correction.

Dapeng Li

On Wed, Apr 14, 2010 at 11:16 PM, David Bradley <bradley at tess-inc.com>wrote:

> Dapeng,
>  Because of the way the TRNSYS kernel processes the input file, parameter
> values are read once at the beginning of the simulation. If you set
> parameter value to the result of an equation, the equation will be updated
> throughout the simulation but only the initial value of that equation will
> be used as the value of the parameter. If you want something in a Type to
> change with time, there are only two ways of doing it: pass it in as an
> input, or build the algorithm directly into the Type itself. You then have
> to recompile the Type and make a new DLL.
> Best regards,
> David
>
>
> Dapeng Li wrote:
>
>> Dear Roberto,
>>
>> I think your problem can be solved by defining heat specific and density
>> of glicole-water mixture as a function of temperature in Equa type and
>> changing the related parameter type as string, then connect both two. If
>> this method can run, please let me know.
>> Best regards,
>>
>> Dapeng Li
>>
>>
>>
>>    ---------- Forwarded message ----------
>>    From: "caria.roberto at tiscali.it <mailto:caria.roberto at tiscali.it>"
>>    <caria.roberto at tiscali.it <mailto:caria.roberto at tiscali.it>>
>>    To: trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>
>>    Date: Tue, 13 Apr 2010 09:37:43 +0200 (CEST)
>>    Subject: [TRNSYS-users] Type 70
>>    dear users,
>>    I have create a type that define heat specific and density of glicole-
>>    water mixture as a function of temperature; now I'd like to connect
>>    these hourly values with some types but, into the types, I find them
>>    like parameters.
>>    I should use type 70: could someone send me a text file example or
>>    explain me how to use it?
>>    thanks in advance
>>    Roberto
>>
>>
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>>
>>
>>
>>
>> ------------------------------------------------------------------------
>>
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>>
>
> --
> ***********************************************************************
> Thermal Energy System Specialists (TESS), LLC David BRADLEY
>      22 N. Carroll Street - Suite 370 Partner
>  Madison, WI 53703                                   USA
> P: +1.608.274.2577 F: +1.608.278.1475
> E-mail: bradley at tess-inc.com Web Pages:  http://www.tess-inc.com    and
>    http://www.trnsys.com
>
> ***********************************************************************
>
>
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