Lithium bromide absorption type refrigerating unit driven by waste heat of internal combustion engine and control method

Abstract

The invention provides a lithium bromide absorption type refrigerating unit driven by waste heat of an internal combustion engine and a control method, and belongs to the technical field of waste heatrecovery and refrigeration. The refrigerating unit comprises the internal combustion engine and a cylinder sleeve heat exchanger connected with the internal combustion engine, wherein the internal combustion engine is connected with a flue gas heat exchanger; the refrigerating unit further comprises a condensation generator and an evaporation absorber, wherein the condensation generator comprisesa generator body with a first heat exchange coil pipe; the cylinder sleeve heat exchanger is connected with the flue gas heat exchanger through a first electromagnetic valve, the flue gas heat exchanger is connected with the first heat exchange coil pipe, and the first heat exchange coil pipe is connected with the cylinder sleeve heat exchanger through a second electromagnetic valve; and the evaporation absorber is partitioned into an evaporation chamber and an absorption chamber through a partition plate, wherein a second heat exchange coil pipe is arranged in the evaporation chamber, the bottom of the generator body is connected with the absorption chamber through a first heat exchanger, and the bottom of the absorption chamber is connected with the condensation generator through a magnetic pump and the first heat exchanger in sequence. According to the lithium bromide absorption type refrigerating unit driven by the waste heat of the internal combustion engine, a condenser and thegenerator body are installed in a cylinder, and an evaporator and an absorber are arranged in a cylinder, so that system and pipeline arrangement are greatly simplified.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery refrigeration, and relates to a lithium bromide absorption refrigeration unit driven by waste heat of an internal combustion engine and a control method. Background technique [0002] With the increasing shortage of energy sources, the issue of energy saving has become the focus of global attention. While actively developing new energy sources, countries around the world are paying more and more attention to the recovery and utilization of waste heat resources. Efficient use of waste heat resources is also an effective way to solve energy shortages. [0003] By evaluating the indicators of the existing internal combustion engines onboard small cargo ships, only 30% to 40% of the energy is used as power output, and the rest of the energy is discharged in the form of heat. In winter, the waste heat can be recovered to provide heating for the ship; but In summer, the heat is discharged i...

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Problems solved by technology

[0005] Judging from the information published so far, the lithium bromide absorption refrigeration unit driven by engine waste heat mainly has the following problems: the conventional lithium bromide absorption refrigeration unit has problems such as complex system, large volume, many power-consuming equipment, and large power consumption. It is difficult to apply on ships with cramped and limited power generation

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