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Re: [TRNSYS-users] length and witdh from the collector area



Fernando,
  I think you'd be best off trying different combinations of modules in series and in parallel. I do not know of any flat-plate collector models that allow you to specify the panel length. Most of them rely on a quadratic efficiency curve that is typically experimentally determined for a given collector configuration. They do not do first-principals computations of the collector fin efficiency equations. If you are looking for a reference that will give you information on how to compute such things, I would recommend "Solar Engineering of Thermal Processes"
Regards,
 David


On 2/16/2011 04:48, Sancho,Fernando wrote:

Hello TRNSYS-users,

 

I’m making simulations with plastic collector. Many from the commercial models can be resized, so it’s almost free how to configurate the collector area. I would like to find  an optimal distribution, dependent of course on Radiation, temperatures etc…, basically how long and width for a minimum output temperature of  the fluid. Or just what is the best for a certain situation 10m*30m or 30m*10m ?.

I ´ve already done my calculations with Excel and know that longer means higher output temperature but lower energy gain… but with trnsys  it’s difficult to face the problem ,

do I take a standard unit and probe around different series und parallel distributions L ?

Do type 553 and 559 in TESS TRn17 do that; difference width and length (I didn’t find it in the general pdf… and have just occasionally access to TRNSYS17)?

Any advice or experience?

 

So Thanks a lot!!!!!

 

 

 

 

Mit freundlichen Grüßen

Fernando Sancho Márquez

PHÖNIX SonnenWärme AG

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PHÖNIX Sonnenwärme AG
Ostendstr. 1

D-12459 Berlin

 

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