Refrigeration system for jet-type energy-storage automobile air conditioner based on automobile exhaust

Abstract

The invention discloses a jet type energy storage automobile air conditioning refrigeration system based on automobile exhaust and belongs to the field of automobile air conditioning equipment. The system comprises a refrigerating loop and a cold storage and release loop; the cold storage and release loop is provided with a phase change cold storage device provided with a cold storage inlet and a cold storage outlet; the cold storage inlet is connected to an expansion valve outlet of the refrigerating loop, and the cold storage outlet is connected to a first jet device of the refrigerating loop through one outlet of a second three-way solenoid valve of the refrigerating loop via a pipeline. Since the cold storage and release loop with the phase change cold storage device is arranged and is connected to the refrigerating loop organically, the phase change refrigeration function can be implemented through the phase change cold storage device, by means of energy time-spatial transfer, the problems of conflict between unstable exhaust waste heat and air conditioner cold load and instability and incontinuity caused by automobile acceleration and reduction are solved, and the requirements of fluctuant and stochastic features of automobile air conditioning load can be met.

Description

technical field [0001] The invention relates to the field of automobile air-conditioning equipment, in particular to a jet-type energy-storage refrigeration system for automobile air-conditioning based on automobile exhaust. Background technique [0002] Automobile air-conditioning system is the basic configuration of modern automobiles. At present, its refrigeration system adopts the compression refrigeration method that consumes part of the engine work. The air-conditioning causes the average fuel consumption of automobiles to increase by 16%-20%. The temperature of automobile exhaust gas can reach above 400°C, and the heat taken away in the form of exhaust emissions accounts for about 30%-40% of the calorific value of fuel. At present, there are mainly jet-type automobile air-conditioning refrigeration technologies to utilize automobile waste heat (including exhaust waste heat and condensation waste heat). [0003] An ejector refrigeration system provided by the prior ar...

AI Technical Summary

Problems solved by technology

There are the following problems in this spray-type automotive air conditioner that adopts automobile exhaust heat: (1) The contradiction between the unstable exhaust waste heat and the cooling load of the automobile air conditioner is manifested as when the automobile is idling or at low speed or parked, it is easy for the injection cooling to fail to meet the requirements of the air conditioner. load requirements

(3) At present, the efficiency of the jet refrigeration system is still relatively low, and the adjustment range is small

(4) The exhaust volume of the vehicle is greatly affected by the road conditions. For example, in urban traffic, there may be frequent alternation of acceleration and deceleration, which leads to poor stability and continuity of the ejector cooling system, which is characterized by certain intermittent and sudden changes

However, the problem with this system is that the compressor is added. When the exhaust gas cooling of the vehicle cannot meet the load demand of the air conditioner, the compressor starts to refrigerate, thereby solving the contradiction between the unstable exhaust waste heat and the cooling load of the vehicle air conditioner.

However, due to the increase of the compressor, the compressor must eventually be driven by the fuel or gas consumed by the car engine, which is not conducive to energy saving

In addition, the system integrates ejector refrigeration and compressor compression refrigeration, which also increases the difficulty of system control

Images