Photovoltaic and photo-thermal coupled thermoelectric generation system and method
A photothermal coupling and cogeneration technology, applied in the field of solar energy utilization, can solve the problems of reducing the power generation efficiency and service life of solar panels, wasting solar energy resources, etc., and achieve the effect of improving thermal efficiency and economy, and reducing heat collection area.
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Embodiment 1
[0033] Photovoltaic photothermal coupled heat and power cogeneration system consists of three parts, such as figure 1 As shown, the first part: heat collection system; the second part: power generation system; the third part: heating system.
[0034] The heat collection system comprises two parts, a PVT assembly (1) and a CPC assembly (2).
[0035] The PVT assembly (1) is a PVT array composed of a plurality of PVT plates connected in series and in parallel to meet flow and heat load requirements. As a preheater of the organic Rankine cycle, the PVT module works in the low temperature region (below 60°C).
[0036] Described PVT plate is known structure, comprises (with reference to image 3 cross-sectional structure): tempered glass cover plate (1-1), photovoltaic cell film (1-2), metal substrate (1-3), heat exchange tube (1-4), thermal insulation material (1-5) and packaging Housing (1-6).
[0037] The CPC assembly is a CPC array composed of a plurality of CPC boards conne...
Embodiment 2
[0044] Photovoltaic photothermal coupled heat and power cogeneration system uses PVT modules as preheaters and CPC modules as evaporators for solar heat collection and utilization. The number and series-parallel connection of single boards in PVT components and CPC components are determined according to the heat capacity of the photovoltaic-thermal coupling cogeneration system, the flow rate of working fluid and the temperature and pressure parameters of the system, including but not limited to those in the present invention figure 2 Arrangement shown.
[0045] After the organic working fluid is pressurized by the working fluid pump (9), it absorbs the heat from the back plate of the battery board through the PVT module (1), and the temperature initially rises, but it is still in a supercooled liquid state; Absorbing solar heat to collect heat, the temperature rises and vaporizes into high-temperature and high-pressure steam; the working medium steam becomes low-pressure stea...
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