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Explain the working of simple vapour absorption refrigeration system.

Question: 

Explain the working of simple vapour absorption refrigeration system.

Or

Explain with neat sketch vapour absorption refrigeration system.

Answer: 

Vapour absorption refrigeration system

vapour absorption refrigeration system is an energy efficient system of achieving refrigeration effect.

Vapor absorption refrigeration system is schematically demonstrated in following diagram.

vapour absorption refrigeration system

Vapour absorption refrigeration system working:

Vapor absorption refrigeration system consists of evaporator, absorber, generator, condenser, expansion valve, pump & reducing valve. In this system ammonia is used as refrigerant and solution is used is aqua ammonia. Strong solution of aqua ammonia contains as much as ammonia as it can and weak solution contains less ammonia. The compressor of vapor compressor system is replaced by an absorber, generator, reducing valve and pump. The heat flow in the system at generator, and work is supplied to pump. Ammonia vapors coming out of evaporator are drawn in absorber. The weak solution containing very little ammonia is spread in absorber. The weak solution absorbs ammonia and gets converted into strong solution. This strong solution from absorber is pumped into generator. The addition of heat liberates ammonia vapor and solution gets converted into weak solution. The released vapor is passed to condenser and weak solution to absorber through a reducing valve. Thus, the function of a compressor is done by absorber, a generator, pump and reducing valve. The simple vapor compressor system is used where there is scarcity of Electricity and it is very useful at partial and full load.

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For further understanding of the Vapor absorption refrigeration system use following material.

 

The VARS is simply like the category of the compression cooling rather than that during this system the mechanical device is replaced by alternative four components: Generator, Absorber, device and Rectifier. simply like vapour compression systems, vapour absorption refrigeration systems have conjointly been commercial and are wide employed in numerous refrigeration and air conditioning system however still they're not popular in Asian nation. Since, VARS system runs on low grade energy, they ought to be operated where low grade energy like waste energy or solar energy is on the market. Since the conventional Figure 1: Vapour Absorption Refrigeration cycle VAR system uses the natural refrigerants like water & ammonia as they're setting friendly. the essential elements of the system ar the generator, absorber, pump, rectifier, condenser, enlargement valve, evaporator and a heat input to the generator via a device.
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