Photovoltaic heat and power combined system for near full spectrum utilization of solar energy based on nanofluids
A combined heat and power, nanofluid technology, applied in solar heating systems, solar collectors using working fluids, solar thermal energy, etc. The processing technology is not mature enough to achieve the effect of improving the power generation efficiency, simplifying the installation of the device and improving the utilization rate.
Active Publication Date: 2019-10-25
HOHAI UNIV CHANGZHOU
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Problems solved by technology
[0003] Existing combined heat and power systems often have many problems such as immature processing technology, inability to effectively separate the photothermal unit from the photoelectric unit, sometimes the heat of the photothermal unit is more dependent on the photoelectric unit, and the temperature of the photothermal unit is limited by the operating temperature of the photoelectric unit.
These problems seriously limit the development and popularization of combined heat and power systems
Method used
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[0026] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0027] Such as figure 1 As shown in the figure, a nanofluid-based near-full-spectrum photovoltaic cogeneration system for solar energy utilization, the system includes a cogeneration module 1, an outlet header 2, a water pump 3, a nanofluid water tank 4, an electronic regulating valve 5, and an inlet header 6 , heat exchanger 7, oil pump 8 and heat conduction oil tank 9;
[0028] Nanofluid water tank 4, electronic regulating valve 5, outlet header 6, combined heat and power module 1, water pump 2, and inlet header 3 are connected through pipelines in sequence to form an external circulation;
[0029] The water pump 3 is installed between the outlet header 2 and the nanofluid water tank 4 to pr...
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The invention discloses a solar nearly-full-spectrum utilization type photovoltaic thermoelectric combination system based on nano-fluid. The system comprises a thermoelectric combination module, an outlet header, a water pump, a nano-fluid water tank, an electronic adjustment valve, an inlet header, a heat exchanger, an oil pump and a heat conducting oil tank. The thermoelectric combination module, the outlet header, the water pump, the nano-fluid water tank, the electronic adjustment valve and the inlet header are sequentially connected through a pipeline, and an outer circulation is formed.The heat exchanger, the oil pump, the heat conducting oil tank and the thermoelectric combination module are sequentially connected through a pipeline, so that an inner circulation is formed. Heat conducting oil in the heat conducting oil tank in the inner circulation flows through the thermoelectric combination module to conduct heat exchange and heating, and after the heat-conducting oil flowsthrough the heat exchanger and is cooled, the low-temperature heat-conducting oil returns to the heat-conducting oil tank through the oil pump. A thermocouple thermometer, an electronic adjusting valve and the thermoelectric combination module form a temperature control system. By the adoption of the solar nearly-full-spectrum utilization type photovoltaic thermoelectric combination system based on the nano-fluid, full-spectrum utilization of solar energy can be achieved, the electricity generating efficiency is improved, high-temperature heat conducting oil is generated, and the utilization rate of the solar energy is improved.
Description
technical field [0001] The invention relates to a nanofluid-based near-full-spectrum solar energy combined photovoltaic thermal power system, which belongs to the technical field of photovoltaic power generation. Background technique [0002] As a renewable and clean energy source, solar energy contains huge energy. The development of solar energy utilization and related technologies of solar energy materials has attracted worldwide attention. At present, the utilization of solar energy mainly includes photothermal conversion and photovoltaic power generation. However, the photoelectric conversion efficiency is low, and the spectral frequency range of available sunlight is narrow. Photothermal conversion mainly utilizes the infrared band of sunlight, and the conversion efficiency is relatively high. If the spectrum range of sunlight can be expanded, the utilization rate of solar energy will be greatly improved. As a new type of energy material, nanomaterials have attracte...
Claims
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IPC IPC(8): F24S10/30H02S40/44
CPCH02S40/44Y02E10/50Y02E10/60
Inventor 李俊阳白建波黄子强姚命宏曹飞刘演华
Owner HOHAI UNIV CHANGZHOU