How is the halocarbon emission limit of 0.1 kg/ kg of air achieved for purge systems? …………….
You are not permitted to operate any purge system unless it emits less than 0.1 kg of refrigerant per kg of air purged to the environment. To achieve this emission standard, purge systems and/or add-on devices that meet this efficiency must be installed. A purge unit on a refrigeration or air-conditioning system means the actual unit, including any associated exhaust recovery equipment.