[TRNSYS-users] total heating demand

Mon Jan 10 11:55:34 PST 2011

Dear all,

 Happy new year!

 I have a question about calculating total heating demand:

There is one same room to keep indoor temperature as 20°C one day 24 hours,
the initial indoor temperature is 20°C, there is no infiltration no other
internal gains in the room. I used 3 different methods to calculate total
heating demand of one day, separately.

1.First is heating in TRNBuild: after using the INTEGRATOR TYPE 46, the
QHEAT is about 34314 kJ.

2.Second is floor heating(active layer): after using the INTEGRATOR TYPE 46,
the QALFL_Inlet is about 33680.7kJ.

3.Third is still floor heating(active layer): after using the INTEGRATOR
TYPE 46, but I used Q=CwaterMwater(Tinlet-Toutlet), the result of Q is
144639kJ.

My question is: 1) To 2 and 3: Why is the difference is so large? 3 is
almost 4 times than 3? I will get the total heating demand, which one is
right? Why? What's different of both of them?

2) If 3 is right. Generally, the floor heating should be more energy-saving
than common heating. But here result is absolutely opposite. The common
heating is more energy-heating. Why? Here what difference of common heating
and floor heating?

Many thanks!

Br.

wang

2011/1/10 <trnsys-users-request at cae.wisc.edu>

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> Today's Topics:
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>   1. Re: problem with RCHECK (David BRADLEY)
>   2. Re: Documentation for examples (David BRADLEY)
>   3. Re: weather simulators (David BRADLEY)
>   4. Re: output report of economical analysis (David BRADLEY)
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: He Hongbo <xjtuhhb at gmail.com>
> Date: Mon, 10 Jan 2011 13:18:05 -0600
> Subject: Re: [TRNSYS-users] problem with RCHECK
> Hongbo,
>   YCHECK and OCHECK are arrays that carry three letter codes for the units
> (C, kg/h, etc.) of a Type's inputs and outputs. The code "TE1" for example,
> means "temperature in degrees C." Each component passes the codes for its
> inputs and outputs to RCHECK and RCHECK looks to make sure that you do not
> have any inconsistent connections made in the input file (such as connecting
> a mass flow rate output to a temperature input). There are features in the
> Trnsys Studio that perform similar checks as well. I had a look at the
> Type564.for code and I do not see why it would generate an access violation
> as you describe. I would recommend that you send the project you are trying
> to run as well as your Type564 code to your distributor to see if they can
> help you. I would not recommend simply deleting the call to RCHECK since the
> access violation error is a good indication that there is a real problem
> somewhere.
> Kind regards,
>  David
>
> On 1/8/2011 18:17, He Hongbo wrote:
>
> Hi,
>
> I found the problem about the code type564.for. In the code DATA STATEMENT
> part, if we delete the "CALL RCHECK(INFO,YCHECK,OCHECK)", then it works
> well. Or else we will get the error message "Access violation at address
> 10037D25 in module 'TRNDLL.DLL'. Read of address 00000003." In the TRNSYS
> manual chapter 8 8.3.5, an example code about how to create a new component
> does not include "CALL RCHECK(INFO,YCHECK,OCHECK)" in the DATA STATEMENT
> part. What is the function of RCHECK?
>
> Thank you so much
>
> Best Regards!!
>
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: 김영일 <yikim at seoultech.ac.kr>
> Date: Mon, 10 Jan 2011 13:25:18 -0600
> Subject: Re: [TRNSYS-users] Documentation for examples
> Dear Youngil,
>   To the best of my knowledge, the only documentation of the examples
> includes a very brief description of each one in the 01 Getting Started
> manual.
> Kind regards,
>  David
>
>
> On 1/8/2011 11:36, 김영일 wrote:
>
>  Dear TRNSYS users,
>
> There are several TRNSYS tpf examples in the /Examples folder.
> They are helpful for learning TRNSYS but some examples are
> difficult to understand. It would be very helpful if there are
> documentations for these examples. Can you help me
> where I can find the documentations if available?
> I am using TRNSYS version 17.
>
> Thanks.
>
> Youngil, SNUST
>
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: david irusta para <dirusta at hotmail.es>
> Date: Mon, 10 Jan 2011 13:31:30 -0600
> Subject: Re: [TRNSYS-users] weather simulators
> David
> If you are using Trnsys17 and standard format weather files such as *.tmy,
> *.tm2, *.epw, *.tm3 then I would recommend using Type15 for your weather
> processing. If you are using Trnsys16 and a standard format weather file
> then you need to use Type89 in combination with Type16. Type9 is intended to
> read non-standard format data files and from your description of the weather
> files that you have, it sounds as though you will need to use Type9. If you
> have the *.xls version, I would recommend that you save that file as a
> "comma separated value" file (*.csv) and then read it with Type9. One of
> Type9's parameters asks you how many header lines there are before the data
> begins. Another parameter asks you how many values to read. This second
> parameter corresponds to the number of columns that are in your *.xls file.
> Kind regards,
>  David
>
> On 1/8/2011 07:53, david irusta para wrote:
>
> Hi!!
>
> I´m trying to decide which weather simulator is better:
>
> - If I use 89e or 89f (.epw), trnsys only can resolve the first time. the
> next times appears "Visual Fortran run-time error" and I don´t know how to
> resolve it
>
> -Which combines of types 9 and 16 do you recommend??
>
> -I have archives with extensions .xls(excel) or .met(Spanish Ministery
> weather archives), where can I define the columns for type 9??
>
> I have done some examples, but I'd rather be sure before proceeding
>
> Thank you so much
>
> Best Regards!!
>
>
>
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
>
> ---------- 已转发邮件 ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: Catherine <xueyushuiyun at gmail.com>
> Date: Mon, 10 Jan 2011 13:33:03 -0600
> Subject: Re: [TRNSYS-users] output report of economical analysis
> Catherine,
>  There are two economic summary components available in Trnsys. Type29 is a
> standard component. Type582 is in the TESS Utility Library.
> Kind regards,
>  David
>
>
> On 1/9/2011 04:41, Catherine wrote:
>
> Dear all,
>   I wan to know whether trnsys could directly output the report of
> economical analysis .
>
> Best regards,
> Catherine
> Department of heating, Ventilation and Air conditioning
> Faculty of Infrastructure Engineering
> Dalian University of Technology
>
> No. 2 Linggong Road, Dalian Liaoning, China 116024
>
>
> _______________________________________________
> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
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