The low-charge system employs R723, a rarely used mixture of 60% ammonia and 40% dimethyl ether with a GWP of eight.
Star Refrigeration’s low-charge ammonia Azanechiller 2.0 units are delivering energy savings at Snozone indoor winter sports centre in Milton Keynes.
The Slovak family company specialises in ammonia refrigeration services.
In the latest IEA Heat Pump Newsletter, Björn Palm from the Royal Institute of Sweden reports on work conducted under an EU project to explore the use of ammonia in small capacity heat pumps. The first of three articles discusses opportunities, challenges as well as the availability of compressors compatible with the system,.