Efficient supercritical kerosene condenser for active cooling test

Abstract

The invention discloses an efficient supercritical kerosene condenser for an active cooling test. The efficient supercritical kerosene condenser comprises at least two rows of heat exchange modules arranged side by side and in parallel, wherein each row of heat exchange modules comprise a plurality of horizontally arranged heat exchange tubes. Each heat exchange tube comprises an outer heat exchange shell and an inner heat exchange shell which are coaxially sleeved together and have the same length, wherein an annular cooling channel with two closed ends is formed between the outer heat exchange shell and the inner heat exchange shell. In the same row, the end parts of every two adjacent inner heat exchange shells are sequentially connected so that the inner heat exchange shells can form acommunicating S-shaped fluid channel; the end parts of the adjacent outer heat exchange shells are connected in sequence so that the outer heat exchange shells can form a communicating S-shaped fluidchannel. As for every adjacent two rows, an outlet of the heat exchange module in the front row and an inlet of the heat exchange module in the rear row communicate. Therefore, safe recovery and high-pressure maintenance of supercritical heating kerosene after an engine open-loop active cooling test are ensured.

Description

【Technical field】 [0001] The invention belongs to the technical field of heat exchangers, in particular to a high-efficiency supercritical kerosene condenser for active cooling tests. 【Background technique】 [0002] With the continuous development of new aerospace vehicle technology, countries around the world have more urgent requirements for a wide range of aircraft operating airspace and speed range. Correspondingly, the demand for engine thermal structure and reusability under hypersonic conditions is also more urgent. Compared with theoretical analysis and numerical simulation research, the thermal structure and reusability performance of the engine must be assessed for a long time with the help of a large number of ground tests and flight tests. For the open-loop active cooling direct connection test on the engine ground, kerosene is used as the coolant to actively cool the engine wall. In order to ensure that the kerosene does not boil in the cooling channel, the pres...

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Problems solved by technology

However, it is worth noting that the flow rate of supercritical high-temperature kerosene required for the open-loop active cooling test of the engine is usually small, the pressure is high, and the temperature range is large. The use of conventional heat exchangers is likely to result in low heat transfer efficiency and large size. , high cooling water flow demand, and overheating and overpressure of heat exchange materials cannot meet the high-efficiency heat exchange of supercritical kerosene condensers in high-temperature and high-pressure environments required for open-loop active cooling direct connection tests of engines

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