Re: [TRNSYS-users] Pvt system

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

Fabrizio,
  I'm not sure that it is unrealistic for the outlet temperature of the PVT to be higher than the average plate temperature. The average plate temperature in a standard solar collector is going to be between the inlet and outlet air temperatures. In a PV/T system, the convective energy exchange between the back of the plate and the air channel might be so bad that the cell temperature gets higher than the inlet or the outlet air temperature. Without looking at the project, its hard to tell. I would recommend that you look at the Type50 mathematical description and determine whether the cell temperature is being used as the absorber plate temperature or whether there is a difference between those two temperatures.
 Kind regards,
  David

On 11/7/2011 07:50, Fabrizio Leonforte wrote:

Dear all,

I'm trying to simulate a pvt system (type 50d), but when I plot the temperature at the outlet of the pvt, it is higher than the average pvt cell.

Can anyone help me?

Fabrizio Leonforte

Ph.D. candidate in Building Technology and Environmental Design

Politecnico di Milano - BEST Department
Via Bonardi, 9
I-20133 Milano, Italy

Tel: +39 02 2399 9468

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