Re: [TRNSYS-users] Type 50 Problems to put thermal parameters

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

Daniel,

  Type50 takes a more theoretical approach to the thermal part of the model. It is actually calculating the collector loss coefficients based on the physical parameters that you give it. The a0, a1, and a2 coefficients that you have from the manufacturer are similar to the Fr(ta) and FRUL outputs that the model computes and displays. I would use whatever physical data you have (number of covers, etc.) and then tune the values of the collector parameters that you don't have (plate absorptance, for example) until you get similar thermal performance from Type50 and from a "standard" quadratic efficiency collector model such as Type1 that allows you to enter a0, a1, and a2 directly.

kind regards,

 David

On 1/3/2023 6:32 AM, Daniel Arbiol via TRNSYS-users wrote:

Dear users:

Currently I'm trying to use type 50 (PVT flat solar collector).
To define its thermal efficiency, I have the data from the manufacturer: the 3 coefficients of the efficiency curve, a0,a1 and a2 (quadratic efficiency).
But there are no parameters inside the type that match these data. Any clue of how can I introduce them in this type?

Thanks in advance.

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David BRADLEY
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