Combined cooling and power system for recycling waste heat of automobile tail gas

Abstract

The invention relates to a combined cooling and power system for recycling waste heat of automobile tail gas. The combined cooling and power system is used for recovering the waste heat of the automobile tail gas for power generation and refrigeration. The combined cooling and power system comprises an organic Rankine device, a power generation device, a refrigeration device, a regulation and control device and a cooling loop. The organic Rankine device is used for obtaining the energy of the waste heat of the tail gas by exchanging heat with tail gas exhausted by an exhaust pipe of an automobile engine, and provides mechanical work through a circulating working medium. The power generation device is connected with the organic Rankine device and used for obtaining the mechanical energy of the organic Rankine device to generate power. The refrigeration device is connected with the organic Rankine device and used for obtaining the mechanical energy of the organic Rankine device to perform refrigeration. The regulation and control device is connected with the organic Rankine device, the power generation device and the refrigeration device and used for controlling the mechanical work of the organic Rankine device according to loads. The cooling loop is connected with the organic Rankine device and the refrigeration device and used for exchanging heat with the organic Rankine device and the refrigeration device. Compared with the prior art, the combined cooling and power system has the advantages of reducing pollution, saving energy, achieving sufficient energy utilization, lowering cost and the like.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of waste heat from engine exhaust, in particular to a cogeneration system for recovery and utilization of waste heat from automobile exhaust. Background technique [0002] With the improvement of people's living standards, the number of automobiles is increasing, and the proportion of automobile energy consumption in the total energy consumption is getting higher and higher. The technology of energy saving and emission reduction of automobiles has become one of the themes of the development of the automobile industry in the world today. First, improving the utilization rate of automobile fuel and reducing environmental pollution have important strategic significance in our country. Especially for long-distance refrigerated vehicles, it is particularly important, and it is an important way to reduce engine fuel consumption and reduce transportation costs. [0003] At present, auto...

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Problems solved by technology

[0006] Chinese patent 101722835A discloses an automobile exhaust waste heat power generation device, including a front exhaust pipe, a rear exhaust pipe, a heat exchanger, a pump, a condenser, an expander, a generator, a voltage regulating circuit and a vehicle battery, and the front exhaust pipe The pipes are respectively connected to the exhaust outlet and the heat exchanger inlet, the rear exhaust pipe is respectively connected to the heat exchanger outlet and the outside air, the condenser inlet is connected to the expander and the pump outlet, and the pump inlet is connected to the condenser. The invented automobile exhaust waste heat power generation device can only use the waste heat to generate electricity, and the utilization rate of heat energy is low, which cannot meet the requirements of energy saving

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