Light condensation-light split photovoltaic/photothermal integration system based on absorption heat pump

An absorption heat pump and photovoltaic technology, which is applied in the field of concentrating-splitting photovoltaic/photothermal integrated systems, can solve the problems of high optical loss and no significant improvement in photoelectric conversion efficiency, and achieves solutions such as intermittent, lower temperature, lower temperature, etc. Effect of heat load

Inactive Publication Date: 2018-07-31
HUBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the introduction of too many light splitting units will lead to higher optical loss, so that the photoelectric conversion efficiency of the actual receiving unit will not be significantly improved. Therefore, in order to pursue higher conversion efficiency, the number of light splitting in the system should not be too much

Method used

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  • Light condensation-light split photovoltaic/photothermal integration system based on absorption heat pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 , the system mainly includes a dish-type concentrating and splitting unit, a solar energy quality improvement unit and a heating unit. The sunlight converges to the beam splitter 2 through the dish-type concentrating device 1, and part of the solar light-transmitting beam splitter capable of high-efficiency photovoltaic conversion enters the uniform tube 3, and after uniform light treatment, it converges to the surface of the battery 4 and is absorbed by the battery 4. For power generation, the heat generated by the battery 4 is taken away by the cooling water in the cooling back plate 5 . At the beam splitter 2, sunlight that is not conducive to efficient photovoltaic conversion is reflected to the heat collector 6, and the cooling water from the generator 9 completes the recovery of solar waste heat. The heat of the cooling back plate 5 on the upper part of the battery 4 is absorbed by the cooling water from the evaporator 7, and the heat-absorbed water ...

Embodiment 2

[0029] Such as figure 1As shown, in the concentrating-splitting photovoltaic / photothermal integrated system based on the absorption heat pump, its operation is the same as that of Embodiment 1, wherein the sunlight passes through the beam splitter 2 to realize the anti-reflection and other functions of the sensitive wavelength band of the photovoltaic cell. Since the reflected visible light is not limited by the operating temperature of the battery 4 due to the increase and reflection of the wave band, it can reach a higher heat collection temperature of about 120°C.

Embodiment 3

[0031] Such as figure 1 As shown, in the concentrating-splitting photovoltaic / solar-thermal integrated system based on the absorption heat pump, its operation is the same as that of Example 1, wherein the absorption heat pump uses the high-temperature heat source and cooling of about 120°C from the solar collector. The low-temperature heat source of about 60°C sent by the back plate 5 forms a large number of medium-temperature heat sources of about 100°C for heating users 17, effectively improving the comprehensive utilization efficiency of solar energy.

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Abstract

The invention provides a light condensation-light split photovoltaic / photothermal integration system based on an absorption heat pump. A heat collector is mounted at the middle part of a butterfly light condensation device; a light split plate, a light homogenization cylinder, a battery and a cooling back plate are mounted on the butterfly light condensation device; the cooling back plate and theheat collector communicate with the absorption heat pump; the absorption heat pump communicates with a first heat exchanger and a third valve; the third valve communicates with a fourth valve, a heatuser and a second heat exchanger; the first heat exchanger and the second heat exchanger communicate by using a pipeline; a first valve, a low-temperature heat storer, a high-temperature heat storer and a fifth valve are mounted on the connecting pipeline; the absorption heat pump communicates with the first heat exchanger, the second heat exchanger, a second valve and a sixth valve; and the sixthvalve communicates with the second valve and a supplement heater. The system increases the afterheat temperature of the cooling back plate through a Libr-H2O absorption heat pump to supply heat to users, realizes sunlight full-spectrum classification efficient utilization, and greatly improves the sunlight utilization rate.

Description

Technical field: [0001] The invention relates to the field of comprehensive utilization of solar energy and high-efficiency photovoltaic technology, in particular to a light-concentrating-light-splitting photovoltaic / photothermal integrated system based on an absorption heat pump. Background technique: [0002] Due to the advantages of cleanness, no pollution, ubiquity and abundant reserves, solar energy has been promoted from supplementary energy to strategic alternative energy by many developed countries. Photovoltaic conversion is one of the most common means of solar energy utilization. Its basic principle is to use the photovoltaic effect to directly convert solar radiation energy into electrical energy. Its basic device is a solar cell. Solar cells are expensive, and the flux density of solar radiation is low, which brings a lot of inconvenience to its efficient utilization. Therefore, in the conversion and utilization of solar energy, high-efficiency concentrating de...

Claims

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Application Information

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IPC IPC(8): F24S23/00F24S80/00F25B30/04H02S40/22H02S40/20H02S40/44H02S40/42
CPCF25B30/04H02S40/20H02S40/22H02S40/425H02S40/44Y02B30/52Y02E10/52Y02E10/60
Inventor 胡玥黄孝川吕辉李劲陈小威陈本源
Owner HUBEI UNIV OF TECH
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