Frigopol, a manufacturer of refrigerant condensers, chillers and complete refrigeration systems, equipped its new office building in Frauental, Austria with air conditioning, relying on R 723, a new natural refrigerant.
Demands
In 2001, the company built a new plant including production and office facilities. All offices were to be air-conditioned to ensure a pleasant "working climate." Economic efficiency and environmental friendliness were the top priorities.
Solution
The heart of the refrigeration plant, which runs on the natural refrigerant compound R 723, is a dual-circuit liquid refrigeration unit. At an evaporating temperature of 0 degree Celsius and a condensation temperature of 45 degrees Celsius, its refrigeration capacity is around 60 kilowatts. The facility consists of two separating hood compressors, each with a plate heat exchanger and an air-cooled condenser. The design of the installation largely corresponds to that of a conventional HFC refrigeration plant.
Technical
specifications:
Type
of facility
Central refrigeration plant
Refrigerant
R 723 (percentage by weight: ammonia 60 %, dimethyl ether: 40 %)
Refrigerant volume
15 kg per circuit
Secondary refrigerant
R 723
Refrigerating
capacity
60 kW
Main
components
Two separating hood compressors, two plate heat exchangers, an air-cooled condenser with water spray
Special
features / Comments
The new natural refrigerant R 723 combines the energy advantages of ammonia with the straightforward facility design of oil-soluble refrigerants. R 723 has a large volumetric refrigerating capacity and accordingly high coefficients of performance.
