Re: [TRNSYS-users] Solar thermal collectors

[David BRADLEY <d.bradley@tess-inc.com>]

Lee,
  No, the collector is a fixed surface based on the value of parameter 7 in Type109. Please note that in the more recent versions of TRNSYS, Type109 has been replaced by Type15. The collector model takes into account "incidence angle modifiers." That is to say that the optical properties of the collector cover change depending on the direction of the beam radiation. You therefore pass the incidence angle and the collector slope from the weather reading processing component to the solar collector component.
  Just to be sure that there isn't an error in the example that you are looking at, the Type109 output "angle of incidence for surface" is connected to the collector input "incidence angle" and the Type109 output "slope of surface" is connected to the solar collector input "collector slope"
Kind regards,
 David


On 12/11/2011 10:24, hankiat lee wrote:

hi,

I'm testing out at which angle the solar thermal collector is set, which will have the most useful energy output.

When i looking at the connection in the hot water system example in trnsys. i notice that the angle of incidence for tilted surface and slope of tilted surface from the Type 109 weather are connected to the solar thermal collector incidence angle and collector slope.

Does it mean that the solar thermal collector is automated to follow the direction of the sun during daytime?

Thank You

Lee Han Kiat

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