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Ammonia is the refrigerant of choice for many industrial refrigeration systems. Custom-engineered ammonia (R-717) refrigeration systems often have design conditions that span a wide range of evaporating and condensing temperatures. Examples are (1) a food freezing plant operating from +50 to -50°F (10 to -45°C); (2) a candy storage requiring 60°F (15°C) db with precise humidity control; (3) a beef chill room at 28 to 30°F (-2 to -1°C) with high humidity; (4) a distribution warehouse requiring multiple temperatures for storing ice cream, frozen food, meat, and produce and for docks; and (5) a chemical process requiring multiple temperatures ranging from +60 to -60°F (15 to -50°C).
EQUIPMENT
Compressors
Condensers
Evaporators
Evaporator Piping
Vessels
Piping
Controls
SYSTEMS
Single-Stage Systems
Economized Systems
Multistage Systems
Liquid Recirculation Systems
Safety Considerations

ISBN: 978-1-939200-98-3 (for SI versions of chapters)
ISSN: 1930-7217 (for SI versions of chapters)

Citation: 2018 ASHRAE Handbook--Refrigeration