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I used the SketchUp-TRNSYS plugin which automatically created the connections between weather data and type 56. I wanted to ask:
1) if I do not want to use blinds, can I set SHADE_CLOSE = 100000 and SHADE_OPEN = 0?
2) if I want to represent a PV collector on top of the building, can I create a window with the same dimensions and set MAX_ESHADE = 1 for the window?
1) if I do not want to use blinds, can I set SHADE_CLOSE = 100000 and SHADE_OPEN = 0?
both should be set to 10000 (100000 is fine too). SHADE_CLOSE is activated if the solar radiation is greater than the value. SHADE_OPEN is activated if the solar radiation is less than the value
2) if I want to represent a PV collector on top of the building, can I create a window with the same dimensions and set MAX_ESHADE = 1 for the window?
does the PV act as a skylight in that it lets some solar radiation through to the inside of the building? Or is there just a PV panel on top of an opaque roof?
kind regards,
David
ParisPasq Topic starter
22/06/2023 7:40 am
@davidbradley Thank you for your reply. For the PV, I am modelling a greenhouse which is mostly made of glass. There are some studies saying that having PV at the roof decreases the solar radiation entering the greenhouse and in turn the required cooling. So, I wanted to model different PV areas to measure how much the cooling decreases. I thought of using the MAX_ESHADE, but even if I set it to 1 for all the surfaces (roof and walls), the cooling does not decrease. Thus, I wanted to ask if I am using MAX_ESHADE correctly.
@davidbradley Hi David, I have a question regarding the PV. If I calculate how much energy they produce, how can I represent that part of the solar radiation is converted into electricity? For example, if I calculate that the greenhouse requires 1000 kWh_el/m^2 (per floor area) and that the PV collectors on on the roof produce 300 kWh_el/m^2 (per floor area), should I just deduct the energy produced by the PV collectors from the greenhouse requirement, having an effective requirement of 700 kWh_el/m^2?
