Method primarily for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method

DETAILED DESCRIPTION I claim: 1.
A method of primarily testing and performance control of heat pumps, refrigerating installations or corresponding systems, in which system thermal energy from at least one heat source is supplied to an energy-carrying medium such as a refrigerant, which circulates in the system and is advanced therein by at least one compressor and caused to pass through at least one condenser where thermal energy is emitted and exchanged to an energy-carrying medium such as a thermal sink, where the method includes the steps of determining actual values in the form of real performance of such parameters as thermal output and so-called coefficient of performance, against the background of measurements, and automatically and substantially continuously comparing said real performance values to nominal, ideal values representing corresponding expected performance values, characterized by the steps of determining said expected performance values, such as thermal output or refrigerating output (Q.
sub.
1,f) and coefficient of thermal performance COP.
sub.
1) or coefficient of refrigerating performance (.
epsilon.
.
sub.
f), automatically and substantially continuously based on actual operating conditions, which are substantially continuously determined by means of measurements.
2.
A method as defined in claim 1, wherein said measurements include measuring parameters related to the heat source(s) (K), such as the temperature (T.
sub.
k,T.
sub.
k,ut), flow (V.
sub.
k) and, at air, the relative humidity (RF.
sub.
k) of its/their energy-carrying medium, and parameters relating to the thermal energy carrier(s), such as the temperature before (T.
sub.
s) and after (T.
sub.
s,ut) exchange, the flow (V.
sub.
s) and, at air, the relative humidity (RF.
sub.
s), and relating to the compressor(s) (2), such as electric energy input (E.
sub.
k) and, said measurements being determined and transferred to a central unit (CE), which contains information on expected performance under different operation conditions, and which automatically determines expected performance corresponding to certain of said measurement results relating to operation conditions and compares the same to real performance, which is determined on the basis of certain of said the measurement results, such as electric energy input and temperature before and after exchange and flow concerning the thermal energy carrier