PVT photovoltaic-thermal module

PVT (photovoltaic–thermal) modules are high-efficiency energy devices that integrate photovoltaic power generation with solar thermal utilization. Building on conventional photovoltaic modules, they incorporate a heat-collection system to achieve “one unit of solar energy yielding both electricity and heat,” thereby overcoming the limitation of traditional photovoltaic modules, which generate only electricity while wasting the associated heat. By removing heat to cool the solar cells, PVT modules not only enhance power-generation efficiency but also recover thermal energy for applications such as space heating and domestic hot water.

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Product Description

Introduction to PVT Photovoltaic-Thermal Modules

PVT (photovoltaic–thermal) modules are high-efficiency energy devices that integrate photovoltaic power generation with solar thermal utilization. Building on the design of conventional photovoltaic modules, they incorporate a heat-collection system, enabling “one unit of solar energy to simultaneously produce electricity and heat” and overcoming the limitation of traditional photovoltaic modules, which generate only electricity while wasting the associated heat. By removing heat to cool the solar cells, PVT modules not only enhance power-generation efficiency but also recover thermal energy for applications such as space heating and domestic hot water.

Core Technical Principle

◆ Top Layer/Photovoltaic Cell Layer

Utilizes crystalline silicon or thin-film photovoltaic cells to directly convert solar energy into electricity.

◆ Intermediate/Heat Exchange Layer

A metal plate (copper/aluminum) or microchannel structure closely attached to the back side of the solar cell captures the heat generated by the cell and dissipates it via a circulating fluid (water/antifreeze).

◆ Base Layer/Insulation Layer

Polyurethane or rock wool materials are used to reduce heat loss to the ground and enhance thermal energy collection efficiency.

Core Advantages Comparison

Comparison dimension	PVT module	Traditional photovoltaic modules	Conventional solar water heater
Energy efficiency	70%-80% (electricity + heat)	18%–26% (electricity only)	50%-60% (heat only)
Power generation efficiency	5%–10% higher than conventional photovoltaics (due to cooling).	Decreases with increasing temperature	One
Applicable Scenarios	Heating, domestic hot water, industrial heat + power generation	Power generation only	Hot water only
Land area	Save 50% (one system, dual use)	Separate land use	Separate land use
Investment payback period	3–5 years (multiple returns)	6–8 years	4–6 years

Photovoltaic-Thermal Module Product Specifications

Standard size	2278113440mm
Weight	43kg
Collect heat	1383Wth
Power generation	590W
Total efficiency	80%
Front glass	Coated Tempered Glass
Heat exchange plate core	2.56 square meters
Thermal insulation board	26mm
Core material	Stainless steel
Heat exchange port diameter	4 points of foreign thread
Heat transfer medium	Antifreeze ethylene glycol
Waterway interface	G1/2 external thread
Junction box	Protection rating IP68
Border material	Aluminum alloy
Wind pressure/snow pressure	2400/5400pa
Back insulation	EPP insulation layer
Connector	MIC compatible
Operating temperature	-40℃~+80℃