Hi!
I have a system which consists of a heating coil and a direct evaporative cooler connected in series. The objective is to heat the intake air to a certain point, and then cool the air with an adiabatic process, in order to ensure indoor conditions within narrow limits in terms of temperature and relative humidity. However, the coil should work only when certain outdoor conditions occur.
I would like to control the heating coil depending on outdoor conditions (coil must work only when outdoor temperature is between -1C and 25C and enthalpy is between 6 and 35 kJ/kg dry air). How should I set the controllers to meet these requirements?
