Chemical adsorption refrigeration system driven by taking engine tail gas as energy

Abstract

The invention discloses a chemical adsorption refrigeration system driven by taking engine tail gas as energy. The chemical adsorption refrigeration system comprises N adsorption bed assemblies; each adsorption bed assembly comprises an adsorption bed unit pipe assembly, an ammonia adsorption pipeline, an ammonia desorption pipeline, a smoke inlet pipeline, a cooling water inlet pipeline and a cooling water outlet pipeline; each adsorption bed unit pipe assembly comprises M adsorption unit pipes; each adsorption unit pipe comprises an adsorption outer pipe, multiple trays arranged in the adsorption outer pipe and filter nets arranged in the middles of the trays; an adsorbent is arranged in each tray; the top ends of the adsorption outer pipes are connected with an air total pipe; a condenser, a liquid ammonia storage tank, a throttler and an evaporator are connected between the ammonia desorption pipeline and the ammonia adsorption pipeline in sequence. The chemical adsorption refrigeration system is simple in structure, high in reliability and good in cooling effect.

Description

technical field [0001] The invention relates to a chemical adsorption thermal refrigeration system, in particular to a chemical adsorption refrigeration system driven by engine exhaust gas. Background technique [0002] In the technology and product research of thermal adsorption refrigeration using the heat source of high-temperature engine exhaust gas, mechanical smoke plate valve structure was often used in the past to control and switch the channel of engine exhaust gas and cooling water. This mechanism has the following defects: due to the exhaust temperature As high as 300-600°C, it is difficult for the mechanical smoke plate valve to find a sealing material under this temperature condition, so there are inevitably air and water leakage problems; the machining process of the mechanical smoke plate valve is complicated, the cycle is long, and the cost is high ;Under high temperature conditions, mechanical smoke plate valves are prone to thermal expansion and contraction...

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Problems solved by technology

[0002] In the technology and product research of thermal adsorption refrigeration using the heat source of high-temperature engine exhaust gas, mechanical smoke plate valve structure was often used in the past to control and switch the channel of engine exhaust gas and cooling water. This mechanism has the following defects: due to the exhaust temperature As high as 300-600°C, it is difficult for the mechanical smoke plate valve to find a sealing material under this temperature condition, so there are inevitably air and water leakage problems; the machining process of the mechanical smoke plate valve is complicated, the cycle is long, and the cost is high ;Under high temperature conditions, mechanical smoke plate valves are prone to thermal expansion and contraction deformation, jamming and other mechanical failures, which affect the normal operation of the system; corrosion problem

However, in actual application, since most of the engine exhaust heat is heated to the buoy and the inner wall of the generator near the buoy, the buoy and the inner wall of the generator are seriously deformed and cracked, and the flue pipe is blocked, which seriously wastes the energy required by the adsorption bed. engine exhaust heat

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