Magnetic nano-fluid concentrating photovoltaic combined heat and power generation device

Abstract

The invention relates to a magnetic nano-fluid concentrating photovoltaic combined heat and power generation device. The device comprises a photovoltaic battery pack module, and also a photovoltaic battery pack module cooling assembly, a photo-thermal assembly and a magnetic field adjustment assembly; the photovoltaic battery pack module cooling assembly comprises a first header, a second header and an S-shaped cooling pipe; the photo-thermal assembly comprises a circulating pump, a heat exchanger, a plurality of transparent collector pipes, a plurality of light homogenizing bodies, a Fresnel lens and a frame; the light homogenizing bodies are multi-ridge lenses, and the area of the upper surface of each multi-ridge lens is greater than the bottom area of the multi-ridge lens; the magnetic field adjustment assembly comprises an S-shaped magnet and a coil wound around S-shaped magnet arms; one collector pipe is arranged between every two adjacent magnet arms; the S-shaped magnet and the plurality of collector pipes are located in the same plane; the nano-fluid is put into all the first header, the cooling pipe, the second header, the collector pipes, the heat exchanger and the circulating pump. The magnetic nano-fluid concentrating photovoltaic combined heat and power generation device has the advantages of simple structure, increase of solar energy utilization rate and the like.

Description

technical field [0001] The invention relates to a photovoltaic thermal power cogeneration device, in particular to a magnetic nanofluid concentrating photovoltaic thermal 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 effic...

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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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