Exhaust gas heat exchanger used in ammonia water absorption refrigeration device using residual heat of exhaust gas

Abstract

The invention discloses a tail gas heat exchanger used in ammonia adsorption refrigerator which can utilize the left heat of tail gas. The invention can supply stable heat to the left-heat refrigerator, while the heat exchanger uses external structure to be maintained easily. Based on the ammonia adsorption refrigerator, the invention connects a tail gas heat exchanger on a gas-liquid entrance of a left-heat generator as tubular frame steam generator, and a gas-liquid separator between the tail gas heat exchanger and the left-heat generator. The invention can be used on the ammonia adsorption refrigerator on ship or engine.

Description

technical field [0001] The invention relates to an ammonia water absorption refrigeration device, in particular to a tail gas heat exchanger for the ammonia water absorption refrigeration device utilizing the waste heat of the tail gas. Background technique [0002] The Chinese Patent Gazette has disclosed a patent application document with the publication number CN2842312. The refrigeration device described in the patent application document can use the waste heat of the exhaust gas of the engine to achieve refrigeration requirements, has a high refrigeration coefficient, and has a small volume and weight. It can be applied to such as Vehicles, fishing boats and other means of transport. The ammonia water absorption refrigerating device using exhaust waste heat described in the above patent application documents includes a waste heat generator, a rectifier, a regenerator, a solution throttle valve, a liquid ammonia throttle valve, an evaporator, a solution pump, a condenser...

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Problems solved by technology

[0004] Although the above-mentioned waste heat generator is a relatively independent structure, because it is installed in the whole refrigeration device, it is not easy to repair or replace when the waste heat generator breaks down, is damaged or reaches the end of its service life

Moreover, because the waste heat generator adopts the form of direct heating of exhaust gas, and the running state of the engine is often unstable (especially in the operation and transportation tools such as fishing boats), such as the start and stop of the machine, the change of the load power, etc., All directly affect the heat energy generated by the exhaust gas at any time, including large changes in the air supply volume and large fluctuations in the temperature of the exhaust gas, which is not conducive to the stable, continuous and normal operation of the refrigeration device utilizing waste heat

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