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Tandem heat exchanger thermal load distribution method for aero-engine fulcrum sealing

A technology of aero-engine and distribution method, applied in the direction of indirect heat exchanger, heat exchange equipment, lighting and heating equipment, etc., to achieve the effect of avoiding over-design

Pending Publication Date: 2022-08-05
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide a heat load distribution method for serial heat exchangers used for aeroengine fulcrum sealing, to solve or alleviate at least one of the problems in the background technology

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  • Tandem heat exchanger thermal load distribution method for aero-engine fulcrum sealing
  • Tandem heat exchanger thermal load distribution method for aero-engine fulcrum sealing
  • Tandem heat exchanger thermal load distribution method for aero-engine fulcrum sealing

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Embodiment Construction

[0030] In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.

[0031] In order to find the performance combination of the series heat exchangers that meet the design requirements, and at the same time evaluate the performance combinations of the series heat exchangers that meet the design requirements, find the optimal combination of the series heat exchangers, and complete the heat load distribution, the application provides A method of heat load distribution for heat exchangers in series.

[0032] The method for distributing heat load to series-connected heat exchangers of the present application takes the condition that the outlet temperature of the hot side of the air-fuel heat exchanger does not exceed a certain lim...

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Abstract

The invention provides a heat load distribution method for a serial heat exchanger for aero-engine fulcrum sealing, the serial heat exchanger comprises an air-air heat exchanger and an air-fuel heat exchanger, high-temperature and high-pressure sealing gas firstly passes through the air-air heat exchanger to perform primary heat exchange with low-temperature outer culvert gas; according to the method, the temperature of a sealing gas outlet of the air-fuel heat exchanger cannot be higher than a limit value so as to achieve the sealing function when the heat load distribution of the tandem heat exchanger is carried out; and meanwhile, the fuel oil outlet temperature of the air-fuel oil heat exchanger cannot be higher than a limit value, so that fuel oil coking is avoided. According to the method, a tandem heat exchanger combination result capable of meeting the design requirement is found, the feasible region of the tandem heat exchanger combination capable of meeting the design requirement is found, and over-design can be effectively avoided by selecting the tandem heat exchanger efficiency combination on the boundary line.

Description

technical field [0001] The present application relates to the technical field of aero-engine heat exchange, and in particular, to a heat load distribution method for a series heat exchanger used for sealing aero-engine pivot points. Background technique [0002] With the continuous development of aero-engine technology, the demand for heat dissipation of the lubricating oil system and high-power components of aero-engines has increased significantly. The low-temperature and high-pressure air flows to the bearing cavity, which is used to seal the bearing cavity to avoid oil leakage. The heat exchanger is composed of an air-air heat exchanger and an air-fuel heat exchanger. The two heat exchangers are connected in series, and the hot side outlet of the air-air heat exchanger leads to the air-fuel heat exchanger. the hot side inlet. [0003] In the design of heat exchangers, the performance parameters of the fluids on the cold and hot sides of the heat exchangers installed on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D21/00F28F27/00
CPCF28D21/00F28F27/00
Inventor 庞晓冬梁义强刘国朝梁彩云
Owner AECC SHENYANG ENGINE RES INST
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