Magnetic nanofluid flat plate photovoltaic cogeneration device

Abstract

The invention relates to a magnetic nanofluid plate type solar cogeneration unit which comprises a photovoltaic cell panel as well as a photovoltaic cell cooling assembly, a photo-thermal assembly and a magnetic field adjusting assembly, wherein the photovoltaic cell cooling assembly comprises a first header, a second header and a cooling tube, the cooling tube is mounted on the back surface of the photovoltaic cell panel, and the first header and the second header are communicated by the cooling tube; an insulation layer is further arranged on the back surface of the photovoltaic cell panel; the photo-thermal assembly comprises a heat exchanger, a circulating pump and a transparent hollow plate which is arranged on the front surface of the photovoltaic cell panel; the magnetic field adjusting assembly comprises a U-shaped magnet and a coil, the U-shaped magnet is wound with the coil, the hollow plate is covered with the magnetic field adjusting assembly, and the coil is located on two sides of the hollow plate; the first header, the second header, the cooling tube, the heat exchanger, the hollow plate and the circulating pump are filled with nanofluids and form a circulating loop by the aid of the circulation pump. The magnetic nanofluid plate type solar cogeneration unit has the advantages that the structure is simple, the solar energy utilization ratio can be improved and the like.

Description

technical field [0001] The invention relates to a photovoltaic heat and power cogeneration device, in particular to a magnetic nanofluid flat plate photovoltaic heat and power cogeneration device. Background technique [0002] Since solar energy resources are abundant, and today's society seeks to save energy, the development and utilization of solar energy has great potential. At present, the utilization technologies of solar energy mainly include basic methods such as photothermal conversion and photovoltaic power generation. However, although photovoltaic power generation can obtain high-grade electric energy products, its main problem is that the photoelectric conversion efficiency is low, which makes the cost higher, and the spectral frequency range of the available sunlight is relatively narrow. The conversion efficiency of the battery is only about 10%-20%. The utilization of solar heat and light is mainly concentrated in the infrared part, and the conversion effici...

AI Technical Summary

Problems solved by technology

However, this kind of heating effect is often unsatisfactory. Generally, the temperature of hot water in summer can reach 40-60°C, while the water temperature in winter is only about 10-30°C, so the utilization rate of solar energy still cannot meet the demand.

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