Hello everybody.
I'm having trouble with my model. I'm doing the simulation for a 80 m2 single home in Rome, Italy. My problem is that I get cooling consumption even in the winter. I thought that this could be due to the high solar radiation heat gain, so I added shadings, blinds and also I modified the model on Sketchup to add shading surfaces. Unfortunately this didn't solve the problem as I still got cooling during the winter. Also, (but this is a different problem), the fan flow is ridiculously high, up to 25 kg/s. I had to hard-sized the maximum flow to 50 m3/s, because if not, the system would not reach setpoint temperature for heating.
I tried everything so I decided to set the cooling thermostat setpoint for the winter high, (50ºC), and I still get cooling during the winter! I don't know what else to try! Please help