I know how to simulate an autosizing simulation. For example, I leave link with Heat Pump' IDF, I get via autosize 12,2 kW, 2.57 m^3/h for heating, and 25,9 kW, 0.34 m^3/h for cooiling.
If I again simulate with 12000 W for heating, and 25000 W for cooling, I get this error:
* Severe * Coil:Cooling:DX:SingleSpeed "PTHP COOLING COIL" -- coil bypass factor calculation did not converge after max iterations. * ~~~ * The RatedSHR of [1.000], entered by the user or autosized (see .eio file), * ~~~ * may be causing this. The line defined by the coil rated inlet air conditions * ~~~ * (26.7C drybulb and 19.4C wetbulb) and the RatedSHR (i.e., slope of the line) must intersect * ~~~ * the saturation curve of the psychrometric chart. If the RatedSHR is too low, then this * ~~~ * intersection may not occur and the coil bypass factor calculation will not converge. * ~~~ * If autosizing the SHR, recheck the design supply air humidity ratio and design supply air * ~~~ * temperature values in the Sizing:System and Sizing:Zone objects. In general, the temperatures * ~~~ * and humidity ratios specified in these two objects should be the same for each system * ~~~ ** and the zones that it serves.
I do not undertand why I get error if I use results from E+. I get similar mistake when I simulate real system in a real building.
I attach file
