An airborne spray cooling system using modular phase change material heat exchangers for energy storage and ram air and fuel as cooling sources

Abstract

The invention discloses an airborne spray cooling system using modular phase change material heat exchanger as energy storage and ram air and fuel as cooling sources, belonging to the field of airborne high heat flux equipment cooling. The invention mainly solves the problem of continuous heat dissipation of high heat flux surface such as radar chip and laser weapon when the airborne cold source cannot be directly used. A surface with high heat density is cool by a spray cooling method, ram air is use as a main cold source, airborne fuel is used as an auxiliary cold source, and a cold source combination method is selected according to whether ram air can be use in flight of an aircraft; A phase change material is used as an intermediate energy storage medium and a modular phase change material heat exchanger is used to ensure that each heat exchanger module circulates energy storage and discharge. Compared with the previous airborne spray cooling system, this system realizes the alternating heat take-off and release of modular phase change material heat exchanger, and can provide low temperature cooling water for the spray cooling system for a long time to meet the cooling needs ofairborne complex environment.

Description

technical field [0001] The invention relates to an airborne spray cooling system using modularized phase change material heat exchangers for energy storage and ram air and fuel oil as cold sources, belonging to the field of airborne high heat flux electronic equipment cooling. Background technique [0002] With the rapid development of airborne radar technology, power amplifier chips have developed from silicon chips and GaAs chips to the third-generation semiconductor GaN chips. Several projects of the U.S. Navy and Air Force have shown that the heat flux density of GaN chips under research has reached 500W / cm 2 , the heat flux density of future chips will exceed 1000W / cm 2 . At the same time, with the continuous improvement of military aircraft maneuverability, stealth performance, and defense performance requirements, technologies such as high-power laser technology, high integration and miniaturization of electronic components have been developed rapidly. Laser weapon...

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Problems solved by technology

[0004] Some patents have proposed the application method of spray cooling in the airborne field, such as patent 201611007244.8, which proposes an airborne evaporative cycle refrigeration comprehensive thermal management system and its method and application. The main feature is that the evaporative refrigeration cycle is used to complete the cabin refrigeration and spray cooling of heating elements. The main feature of this scheme is to use evaporative refrigeration cycle to provide cooling capacity for the spray medium. However, the airborne space is limited, and the cooling capacity of evaporative refrigeration cycle is limited. In addition, it needs to meet the cooling demand in the cabin. It is applied to spray The cooling capacity of the cooling system must be insufficient to complete the cooling work of high heat density surfaces such as laser weapons; patent ZL201721063995.1 proposes an airborne turbine intermittent cold storage spray cooling system for laser weapons, the main feature is that the turbine is used as a cooling device and The power source, the cooling source in this scheme is completely provided by the turbine, which increases the load on the original turbine refrigeration system of the aircraft, which is not conducive to the long-term stable operation of the aircraft

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