Division 5 Seasonal space cooling energy efficiency of comfort chillers and air conditioners using internal combustion engine:

The seasonal space cooling energy efficiency η_s,c shall be calculated on the basis of the seasonal primary energy ratio in cooling mode SPER_C, corrected by contributions accounting for temperature control and, for water/brine-to-water comfort chillers, or water/brine-to-air air conditioners only, the electricity consumption of ground water pump(s);

The seasonal primary energy ratio in cooling mode SPER_C shall be calculated on the basis of seasonal gas utilisation efficiency in cooling mode SGUE_C , the seasonal auxiliary energy factor in cooling mode SAEF_C taking into account the conversion coefficient for electricity CC;

The seasonal gas utilisation efficiency in cooling mode SGUEC shall be based on the part load for cooling P_c (T_j ) divided by the bin-specific gas utilisation efficiency for cooling at partial load GUE_c,bin , weighted by the bin-hours the bin conditions occurs, using the conditions set out in point 5(h);

The SAEF_C shall be based on the reference annual cooling demand Q_C and the annual energy consumption for cooling Q_CE ;

The reference annual cooling demand Q_C shall be based on the design cooling load P_design,c multiplied by the equivalent active mode hours for cooling H_CE as set out in Table 29;

The annual energy consumption for cooling Q_CE shall be calculated as the sum of:

1. (1)

   the ratio of the reference annual cooling demand Q_C and the seasonal auxiliary energy factor in cooling mode in active mode SAEF_c,on ; and

2. (2)

   the energy consumption during standby, thermostat-off, off and crankcase heater mode during the season;

The SAEF_c,on shall be based (insofar as relevant) on the part load for cooling P_c (T_j ) and the auxiliary energy factor in cooling mode at partial load AEF_c,bin , weighted by the bin-hours the bin conditions occurs using the conditions set out below;

The conditions to calculate the SGUE_c and the SAEF_c,on shall take into account:

1. (1)

   the reference design conditions set out in Table 24;

2. (2)

   the European average cooling season set out in Table 27;

3. (3)

   if applicable, the effects of the degradation of the energy efficiency caused by cycling depending on the type of control of the cooling capacity.