I'm wondering how I can calculate the overall thermal efficiency of my heating/refrigerator pump.
Actually I have this AC/heating pump unit from Samsung (P/N: AR09TXFYBWKNEE).
I've placed a power meter on the external unit, measuring kWh, kW, current, voltage and frequency and saving them in a datalogger.
(In addition to the installed power meter, I've also added temperature and humidity sensors inside and outside the room environment. I don't know if they are useful for that.)
I want to know how the machine, its working (in terms of efficiency) in relation to its nameplate thermal data. In other words, if the consumed energy, related (for example) to the heating capacity, is employed correctly to heat my 52 square meter room. I want to calculate a sort of "efficiency rating" of the cooling/heating system referred to the nameplate data using the acquired information and the respective nameplate info.
You guys, could please help me to find the correct formula in order to get that?