Data for part load

Data for part load operation is calculated from equations of “option B” at page 27 in the standard, where COPmin= 0.89*COP at power output Phpmin=0.5*Php for a fixed capacity unit.
From Lot 1 two different results are obtained, “etas” and “average COP”. Etas are calculated by involving the primary energy factor of 2.5 which makes it difficult to compare with other calculated SPF. However, “average COP” corresponds to SPF 1