[TRNSYS-users] Inaccurate result for the energy gained by the fluid in the collector

[Jeff Thornton]

< How can i correct it then assuming it is the weather data for
larnaca that is bad. > 

Before you assume it's bad - why don't you
check some other sources to see if you can find monthly solar radiation
for the site. The data may be perfectly valid.... 

Jeff 

---

Jeff
Thornton 

_President - TESS LLC_ 

_22 N. Carroll Street, Madison WI
USA 53703_ 

_Office: (608) 274-2577 Fax: (608) 278-1475_


_www.tess-inc.com_ 

_E-Mail: thornton at tess-inc.com_ 

On 09/27/2013
6:14 pm, Ayoola Afolayan wrote: 

> Hello jeff, 
> How can i correct it
then assuming it is the weather data for larnaca that is bad. 
> 
>
Thank You 
> Ayoola 
> 
> On 27 Sep 2013, at 23:02, Jeff Thornton
<thornton at tess-inc.com [5]> wrote:
> 
>> What doesn't seem to be logical
about the plot that you sent along? The shape of the curve over the
year? The collected energy for Larnaca comes up early in the year, stays
relatively constant, then drops back down at the end of the year where
the other two cities have more of a parabola shape. However, if you look
at the shape of the incident radiation plot you'll see exactly the same
behavior. Either the weather data is bad, or the city in question has
that solar pattern - which isn't all that unusual. 
>> 
>> Jeff 
>> 
>>
---
>> 
>> Jeff Thornton 
>> 
>> _President - TESS LLC_ 
>> 
>> _22 N.
Carroll Street, Madison WI USA 53703_ 
>> 
>> _Office: (608) 274-2577
Fax: (608) 278-1475_ 
>> 
>> _www.tess-inc.com [1]_ 
>> 
>> _E-Mail:
thornton at tess-inc.com [2]_ 
>> 
>> On 09/27/2013 2:52 pm, David BRADLEY
wrote: 
>> 
>>> Ayoola,
>>> Remember to account for the amount of energy
that has been stored in or removed from the tank since the beginning of
the simulation. If that does not solve your problem then I would
recommend sending your project and your question to your distributor's
technical support for assistance.
>>> Kind regards,
>>> David
>>> 
>>>
On 9/27/2013 05:09, afolayan ayoola wrote: 
>>> 
>>>> Hello TRNSYS user,

>>>> I am modelling a system for solar domestic hot water heating with
the following components: Pump (Type 3b), Controller (Type 2b),
Collector (Type 1b), Tank (Type 4c) with the weather component Type
109-TMY2 (Larnaca-Cyprus). After running the simulation, i try to
calculate the useful energy gain by the fluid in the collector monthly
on excel but the graph am getting seems not to be logical. I repeat the
same process but with a different weather data for 2 different cities,
Istanbul and Konya and the result/plot was better compare to the one i
got for Larnaca. Meanwhile, my case study is on Larnaca-Cyprus. Please i
need to know why am getting a poor result for Larnaca. 
>>>> Please find
attached copy of my graph for your referral. 
>>>> Thank You 
>>>>
Ayoola Afolayan 
>>>> Department of Mechanical Engineering, 
>>>>
Eastern Mediterranean University, North Cyprus. 
>>>> 
>>>>
_______________________________________________
>>>> TRNSYS-users
mailing list
>>>> TRNSYS-users at cae.wisc.edu
>>>>
https://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:+1.608.278.1475
>>> d.bradley at tess-inc.com
>>> 
>>>
http://www.tess-inc.com
>>> http://www.trnsys.com
> 
>>
_______________________________________________
>> TRNSYS-users mailing
list
>> TRNSYS-users at cae.wisc.edu [3]
>>
https://mailman.cae.wisc.edu/listinfo/trnsys-users [4]



Links:
------
[1] http://www.tess-inc.com
[2]
mailto:thornton at tess-inc.com
[3] mailto:TRNSYS-users at cae.wisc.edu
[4]
https://mailman.cae.wisc.edu/listinfo/trnsys-users
[5]
mailto:thornton at tess-inc.com
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