Influence of the operating time on the coefficient of performance in on/off-regulated heat pump systems
Magazine article, 1981
The coefficient of performance has been determined experi~
mentally for a water-to-water heat pump at laboratory
conditions. Tests' have been carried out with the heat pump
operating both continuously and on/off-regulated. In the
latter case the conditions concerning dynamic temperature
variations were as close to the ones in a real application
as possible. The tests showed a decrease of the C.O.P.
when the absolute operating time was increased and when
the relative operating time was decreased.