Dual-medium supercritical low-temperature thermal performance test platform

A test platform and supercritical technology, applied in the cryogenic field, can solve the problems between normal temperature and 100 ℃, the test pressure cannot reach the supercritical state, and it does not have the function of adjusting the flow rate, so as to improve the stability, The effect of ensuring stability and extending the test range

Active Publication Date: 2017-06-27
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology

[0006] However, there are many deficiencies in this low-temperature thermal performance testing platform
If the test pressure of the cold side is provided by the gasifier in the tank car, the test pressure cannot reach the supercritical state; the low-temperature medium is tra

Method used

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  • Dual-medium supercritical low-temperature thermal performance test platform
  • Dual-medium supercritical low-temperature thermal performance test platform

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Embodiment Construction

[0073] The technical solutions in the present invention are clearly and completely described below in conjunction with the accompanying drawings and embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0074] The low-temperature medium in this embodiment is liquid nitrogen. The embodiment takes liquid nitrogen from a supercritical liquid state to a supercritical gas state under supercritical pressure as an example to further illustrate this patent.

[0075] It should be noted that the first test prototype and the second test prototype in the present invention are only shown as shell-and-tube structures. In fact, the test prototypes include but are not limited to sleeve-and-tube heat exchangers, shell-and-tube heat exchangers, and plate heat exchangers. Heater and other heat exchangers.

[0076] Such as f...

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Abstract

The invention relates to a dual-medium supercritical low-temperature thermal performance test platform. The test platform comprises the following components: a low-temperature loop, a high-temperature loop and an ethylene glycol loop, wherein a first test sample machine and a second test sample machine are arranged in parallel in the low-temperature loop; in the high-temperature loop, a high-temperature medium circulation pump, a high-temperature loop flow meter and a valve for cutting off an opening and closing pipe connected in series by a high-temperature medium circulation pipe are arranged between a high-temperature loop storage tank and a hot-side medium channel of the first test sample machine; in the ethylene glycol loop, an ethylene glycol circulation pump, an ethylene glycol loop flow meter and a valve for cutting off an opening and closing pipe connected by an ethylene glycol circulation pipeline are arranged between an ethylene glycol storage tank and a hot-side medium channel of the second test sample machine. With the adoption of a technical scheme provided by the invention, the thermal performance test for heat exchange between a low-temperature medium and each of two media including high-temperature water and ethylene glycol can be realized, thereby greatly expanding a test range of the supercritical low-temperature medium. The low-temperature medium in the invention comprises, but is not limited to, liquid nitrogen, liquid oxygen, liquid argon, liquefied natural gas and the like.

Description

technical field [0001] The invention belongs to the field of cryogenic technology, and in particular relates to a dual-medium supercritical low-temperature thermal performance testing platform for testing the thermal performance of supercritical low-temperature fluid heat transfer and flow in a heat exchanger. Background technique [0002] With the deepening of people's understanding of supercritical fluid, not only its extraction has been widely used, but its heat transfer has also been applied in many fields. For example, in the field of LNG, the gasification of LNG in the gasifier, the liquefaction and gasification of air in the supercritical air energy storage system, the supercritical water reactor in the field of power generation, and the supercritical hydrocarbon fuel in the aerospace cold zone Aero-engine active cooling, etc. [0003] In these applications, especially in the field of low-temperature LNG and transboundary air energy storage systems, the core technolo...

Claims

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Application Information

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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 倪利刚陈永东吴晓红刘孝根程沛于改革周兵宋嘉梁张明然
Owner HEFEI GENERAL MACHINERY RES INST
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