04
Mar
Ammonia Water Absorption Refrigeration Cycle. Engines to drive an ammonia-water absorption refrigeration system. An energy balance of a diesel engine shows that sufficient waste heat is provided. A simple and practical absorption system using ammonia as refrigerant and water as absorbent described in the previous articles is an example of single-effect cycle. For applications above 32F primarily air condition - ing the cycle uses lithium bromide as the absorbent and water as the refrigerant.
A solar-driven ammonia absorption refrigeration system was designed constructed and tested. The various parts of the ammonia-water vapor absorption refrigeration system and their working are explained below please refer the figure above. Unfortunately most of ammonia-water single stage absorption cycles are only able to produce COPs of approximately 05 which are well below the 10. The water has an ability to absorb a very large quantity of ammonia vapour. There are a number of known absorption cycles capable of triple-effect refrigeration. It is in the evaporator where the refrigerant pure ammonia NH3 in liquid state produces the cooling.
Maximum increase in COP of combined ejector-absorption refrigeration system is 50 higher than the basic absorption cycle Abdulateef Murad Alghoul Zaharim Sopian 2011.
In this system the low pressure ammonia vapour refrigerant leaving the evaporator enters the absorber where its ab-sorbed by the cold water in the absorber. The refrigeration cycle uses ammonia pressure-equalizing fluid butane refrigerant and water absorbing fluid has no moving parts and does not require electricity to operate. A combined thermal power and cooling cycle proposed by Goswami is under theoretically investigation. Used as a refrigerant and the water is used as an absorbent. An energy balance of a diesel engine shows that sufficient waste heat is provided. In this system the low pressure ammonia vapour refrigerant leaving the evaporator enters the absorber where its ab-sorbed by the cold water in the absorber.