Energy and exergy analysis of NH3/CO2 cascade refrigeration system with subcooling in the low-temperature cycle based on an auxiliary loop of NH3 refrigerants - ScienceDirect
A Review of Safety Issues and Risk Assessment of Industrial Ammonia Refrigeration System | ACS Chemical Health & Safety
Ammonia refrigeration. Presentation with animation. - YouTube
Solar Vapor Absorption Refrigeration System (Ammonia-Water Solar Cooling System) Explained. | Power hammer plans, Solar energy, Refrigerator
Ammonia ⋆ Bellingham Cold Storage
CO2/NH3 Cascade Industrial Refrigeration Systems – ColdChainManagement.org