Vehicle-mounted high-energy cold accumulation system

Abstract

The invention discloses a vehicle-mounted high-energy cold accumulation system. The vehicle-mounted high-energy cold accumulation system comprises an external cold accumulation unit and a carriage cold accumulation device, wherein the external cold accumulation unit comprises a refrigeration unit, a heat exchanger, a cold accumulation tank and water pumps; the refrigeration unit is coupled with the heat exchanger; the heat exchanger is coupled with the cold accumulation tank; an external guide pipe provided with a stop valve is arranged at each of the top and bottom end of the cold accumulation tank; the external guide pipes are connected with the low-temperature water pumps; the carriage cold accumulation device is mainly composed of a plurality of cold accumulation strips; the cold accumulation strips comprise top cold accumulation strips which are longitudinally mounted at the top in a carriage in parallel and side face cold accumulation strips which are arranged at the two sides in the carriage; a water discharging pipe is arranged at the front end of each cold accumulation strip. According to the vehicle-mounted high-energy cold accumulation system, the external cold accumulation unit and the carriage cold accumulation device are creatively mounted in a separated manner, so that the load of a vehicle is greatly relieved, an occupied space of the system is obviously reduced and the loading capacity of cargoes of a refrigerator car / freezer car is expanded. According to the energy-saving vehicle-mounted high-energy cold accumulation system, the cold accumulation adopts phase-change-free liquid-state cold accumulation liquid, the lower limiting value of temperature is low and the cold accumulation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a vehicle-mounted high-energy cold storage system. Background technique [0002] The potential of China's cold chain logistics market is huge, and China's refrigerated truck market has developed rapidly in recent years. Refrigerated vehicles are mainly divided into mechanical refrigeration, cold storage refrigeration and liquefied gas refrigeration according to the refrigeration method. Mechanical refrigeration has problems such as complex structure, easy failure, high maintenance cost and slow cooling speed. The cooling speed of liquid nitrogen refrigeration is fast, but the cost is high; cold storage refrigeration relies on its own cold plate for cold storage to maintain the refrigerated temperature in the compartment, with low operating costs, easy maintenance and reusable cold plate, suitable for medium and short-distance transportation of refrigerated goods. It is wi...

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Problems solved by technology

Although this method is relatively energy-saving because it can be powered by an external AC power supply, it may also have the following disadvantages: (1) Since the entire refrigeration system is integrated on the vehicle body, the system is relatively bulky, resulting in a heavy load on the vehicle body and increasing fuel consumption. (2) The system needs to be independently equipped with a cold storage tank device, which takes up a lot of space in the compartment and reduces the cargo loading capacity; (3) The cold storage tank is filled with phase-change cool storage agent (which is conventionally used in existing cold storage systems), Mainly rely on solid-liquid phase change latent heat storage, there is a lower limit of phase change temperature, and the cold storage efficiency is not high; (4) The cold storage refrigeration system has undergone secondary heat exchange, and in principle there must be heat loss, which affects the efficiency of refrigeration energy consumption. decreased

However, so far, there have been no reports of a new type of vehicle-mounted cold storage system that is light in load, occupies less space in the compartment, has a lower temperature limit, high cold storage efficiency, and is energy-saving and environmentally friendly.

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