BCA Part J5.12 Heat rejection equipment

[J5.12(a) outlines that the requirements for a fan, that is part of a cooling tower, closed circuit cooler or an evaporative cooler that is part of an air-conditioning system, are located in Table J5.12. The maximum fan motor power allowed is dependent on the type of fan used.

The performance of cooling tower fans, closed circuit cooler fans and evaporative condenser fans can be determined using any nationally or internationally accepted standard. For example Cooling Technology Institute’s (CTI) standard CTI STD-201RS(13) and Acceptance Testing Code (ATC) ATC-105(00), can be used to determine the performance of cooling tower fans. CTI STD-201RS(13) and ATC-105S(11) can be used for closed circuit cooler fans and ATC-106(11) can be used to determine the performance of evaporative condenser fans.

J5.12(b) states the requirements for a self-contained, air-cooled condenser fan motor that is part of an air-conditioning system. The fan motor must not consume more than 42 watts of fan motor power for each kW of heat removed from the refrigerant. The air-cooled condenser fan is used to cool refrigerant from its vapour phase to its liquid phase as part of the refrigeration cycle.

Air-cooled condensers, not part of a packaged air-conditioner or split unit as per the exemptions in J5.12(b)(i) and (ii), are typically associated with larger plant installations. The requirements of J5.12(b) are also not intended to capture a condenser covered by MEPS.]