Division (34)

‘bin-specific coefficient of performance’ (COPbin(T_j )) or ‘bin-specific primary energy ratio’ (PERbin(T_j )) means the coefficient of performance of the heat pump space heater or heat pump combination heater using electricity, or primary energy ratio of the heat pump space heater or heat pump combination heater using fuel specific for every bin in a season, derived from the part load for heating, declared capacity for heating and declared coefficient of performance for specified bins and calculated for other bins by interpolation or extrapolation, corrected where necessary by the degradation coefficient;