Solar photovoltaic thermal/electric heat tracing system for permafrost-buried pipe

Abstract

The invention relates to a solar photovoltaic thermal/electric heat tracing system for a permafrost-buried pipe. The solar photovoltaic thermal/electric heat tracing system has the characteristics as follows: (1) a heat-storing and heat-tracing resistance wire is electrified and heated by a solar photovoltaic conversion system on a permafrost-buried part of a fluid pipeline on a user side so as to achieve all-weather heat tracing fluid supply; (2) the solar photovoltaic thermal/electric heat tracing system is used for heat tracing protection on a trunk pipeline buried into a permafrost layer so as to prevent the fluid trunk pipeline from freezing (coagulating); (3) a heat-insulating layer made of a phase change heat storage material is wrapped around the permafrost-buried part of the fluid pipeline on the user side, and through electrification-caused thermal storage in the daytime and coagulation-caused heat release at night, heat storage and delayed heat release are achieved; (4) storing remaining electricity of the solar photovoltaic conversion system in a storage battery, and controlling a circuit by a temperature control system according to the real-time temperature around the pipeline so as to achieve intermittent power supply heat tracing, thereby saving energy. The solar photovoltaic thermal/electric heat tracing system has the characteristics of simple and flexible structure, energy conservation, environmental friendliness and the like; without using an additional power supply and power equipment, the investment, maintenance and operating costs can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of photoelectric conversion of solar energy, thermal equipment, and high-efficiency utilization of energy, and specifically relates to a solar photoelectric conversion heat storage / electricity storage heat tracing system buried in frozen soil. Background technique [0002] In the alpine or plateau areas of our country, due to the low temperature all year round, the wet soil is in a frozen state. This phenomenon is called permafrost in meteorology. In some areas, the permafrost often does not melt until midsummer, transitioning to the permafrost layer, that is, it has not completely melted until September, and the process of permafrost in the new year begins again. The area of ​​permafrost that does not melt in summer in my country is about 2.148 million square kilometers, mainly concentrated in the Qinghai-Tibet Plateau and the Greater and Lesser Khingan Mountains. Permafrost weather has an important impact...

AI Technical Summary

Problems solved by technology

At present, the water supply in the plateau cold area usually adopts single heating or heat insulation measures, or is buried deep below the permafrost layer. Since the depth of the permafrost layer in the plateau area can reach several meters to tens of meters, the method of deep burial will cause huge damage. Waste of manpower and material resources

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