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Absorption Refrigeration Systems. Three-fluid (gas diffusion) ARSs:
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Absorption Refrigeration Systems. Three-fluid (gas diffusion) ARSs

Two-fluid absorption cooling system unable to replace a compressor, which requires a large amount of work shaft pump liquid with insignificant energy demand compared to the refrigeration effect. By adding a third fluid pump is removed, completely eliminating all moving parts. In addition, this system is called von Platen-Munters system after its Swedish inventors. This type of system is shown in Fig. 3.48. The most commonly used liquid ammonia as refrigerant), water (absorbent), and hydrogen, neutral gas used to support part of the total pressure in the system. Hydrogen is called a carrier gas. The block consists of four main parts: a boiler, a condenser, an evaporator and a shock absorber. In gas plants, heat supply to the torch, and when the machine is powered by electricity, heat, supplied to the heating element. The unit charge consists of a quantity of ammonia, water and hydrogen to adequate ammonia condensing pressure at room temperature, for which it is intended. This method absorption cooling is currently being used in national systems where the COP is less important than the Pacific trouble-free operation.
In the system shown in Fig. 3.48, cold vapour ammonia, hydrogen is circulated by natural convection through the gas-gas heat exchanger absorber, where ammonia vapour comes into contact with a weak solution of the separator. At low temperature ammonia and hydrogen, ammonia absorption and, hence, there is a hydrogen alone rises through the heat exchanger, evaporator, and a strong solution flows down downwards by gravity to the generator.

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