A comprehensive performance test device and test method for high-temperature cascade phase change heat storage equipment

Abstract

A comprehensive performance test device and test method for high-temperature cascade phase-change thermal storage equipment, including a filter, fan, exhaust valve, flow meter, intake valve, air heater, experimental connection pipeline, phase-change thermal storage equipment, cooling device, six high temperature electric valves, several temperature and pressure sensors, data acquisition and control system. The maximum temperature of the heat transfer fluid in the test device can reach 800°C, which broadens the range of tests. At the same time, it can conduct research on cascade heat storage technology for phase change heat storage equipment. Steady state test, the test is more comprehensive. The heat transfer medium used in the present invention is air, which is environmentally friendly and pollution-free.

Description

technical field [0001] The invention belongs to the field of thermal energy industrial waste heat and solar thermal energy storage and utilization, and in particular relates to a comprehensive performance testing device and testing method for high-temperature cascade phase-change heat storage equipment. Background technique [0002] In view of the intermittent and unstable characteristics of new energy sources such as solar energy and industrial waste heat, it is necessary to adopt effective heat storage methods to solve the problem of time and space mismatch in energy utilization, effectively improve energy utilization efficiency, and alleviate Energy pressure and the promotion of sustainable development of social economy are of great significance. The phase change heat storage material has the advantages of high heat storage density and small temperature change during the heat storage and discharge process, and has become a heat storage material with broad application pros...

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Problems solved by technology

[0003] However, phase change heat storage materials still have shortcomings such as low thermal conductivity, severe corrosion, supercooling, and phase separation, which need to be improved through relevant experimental research.

At present, there are few studies on phase change heat storage equipment, and the temperature range of the test is small. At the same time, the function of the experimental device for performance testing of phase change heat storage materials and phase change heat storage equipment is relatively single. For example, most performance test platforms can only A single-stage test section, a single direction of flow direction or a fixed working condition test for a phase change thermal storage device cannot achieve a comprehensive performance test for a phase change thermal storage material or a phase change thermal storage device

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