Disc condensation-based composite frequency-division solar photovoltaic photo-thermal cogeneration device

Abstract

The invention provides a disc condensation-based composite frequency-division solar photovoltaic photo-thermal cogeneration device. The disc condensation-based composite frequency-division solar photovoltaic photo-thermal cogeneration device comprises a disc condenser and a composite frequency-division solar photovoltaic photo-thermal receiver, wherein a solid frequency divider is used for absorbing short-wavelength light, while high-response wave band of a condensation silicon battery can pass through, a liquid frequency divider is used for absorbing other near-infrared wavelength light, while the high-response wave band of a condensation silicon battery can pass through, the solid frequency divider is arranged in a high-transmitting glass inner tube, a photovoltaic cell circuit board is fixed on a metal wall, the condensation silicon battery is connected with the photovoltaic cell circuit board, and a silica gel package agent is arranged between a high-transmitting glass outer tube and the condensation silicon battery. By the disc condensation-based composite frequency-division solar photovoltaic photo-thermal cogeneration device, wide-spectrum frequency division of solar radiation can be achieved, higher-quality thermal energy is output as well as the temperature of a condensation battery assembly is reduced, thermal energy conversion and storage are both performed in a filtering liquid, efficiency loss caused by secondary heat exchange is prevented, and the thermal efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic photothermal comprehensive utilization, in particular to a composite frequency-division solar photovoltaic photothermal cogeneration device based on dish-type concentrating light. Background technique [0002] The concentrating solar photovoltaic photothermal system adopts concentrating technology, which can not only solve the problem of low solar radiation energy production due to low energy flow density of photovoltaic power generation systems, but also reduce the use of solar cells to reduce power generation costs. A cooling flow channel is arranged on the back side of the photovoltaic module to solve the problem of temperature rise of the module, and the recovered heat can be reused, so this system has attracted a lot of attention in the field of solar energy utilization. However, the heat collector of the traditional concentrating solar photovoltaic photothermal system mainly obtai...

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Problems solved by technology

[0003] However, the currently researched concentrating solar photovoltaic photothermal systems based on solar spectral frequency division technology mostly use a single frequency divider (multilayer thin film solid interference filter or selective absorption liquid filter), but in fact different single frequency dividers Due to the advantages and disadvantages of each device, it is difficult to realize the wide spectrum frequency division of solar radiation

The Chinese patent "A Solar Concentrating Frequency Division Photovoltaic Thermal Cogeneration Device" (Application Publication No. CN102779885A) has proposed the use of composite frequency division to achieve photovoltaic thermal cogeneration, but the solar frequency division glass and liquid frequency divider they use Water can only absorb near-infrared light, and does not play the role of absorbing the non-responsive short-wave band light of the battery, and cannot realize the wide-spectrum frequency division of solar radiation. In this way, the improvement of the overall efficiency of the concentrating solar photovoltaic photothermal system is limited, so it is necessary to compound Frequency divider combination for improvement and optimization

In addition, the above-mentioned patent (application publication number CN102779885A) uses a compound parabolic concentrator, which belongs to a low-power concentrator. The application of this concentrator in a solar spectrum frequency-division photovoltaic photothermal system has no efficiency and economic advantages. Because Otanicar et al. pointed out in the article "Envisioning advanced solar electricity generation: Parametric studies of CPV / T systems with spectral filtering and high temperature PV" published in "Applied Energy" (2015, Volume 140, Issue 2) that spectral frequency division is used Technology Concentrating photovoltaic thermal system can only highlight its advantages under high-power concentrating conditions

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