Dutch Triple Solar has unveiled a residential PVT heat pump system that uses waste heat from PV modules as a heat source.
The heat pump from Triple Solar 5.0 does not require an outdoor unit. Jannik Fleiter, product manager at Triple Solar, said that the PVT heat pump was designed for single-family homes and as a replacement of gas heating in terrace-shaped and multi-family buildings where space, regulations or aesthetics limit conventional heat pumps.
The compact system consists of two modules that are installed in the boiler space of a building. It measures 100 cm x 38 cm x 65 cm, weighs 55 kg and has a reported noise level of 42 decibels (DB (A)). The system uses propane (R290) as a coolant.
The heat pump removes waste heat from the photovoltaic (PV) modules from the roof, but only works with the manufacturer’s sandwich modules. These generate electricity on the front and have a heat exchanger on the back to absorb environmental heat. The company claims that this set-up improves efficiency by 20% compared to conventional air-water heat pumps.
The Slovenian manufacturer BISOL supplied the tunnel oxide -passivated contact (Topcon) PV modules, which have a module efficiency of 22%for the front panel of the system.
The heat pump delivers 1.2 kW to 5 kW heating production and reaches a maximum power temperature of 70 C. The compressor output can be fully modulable for greater efficiency and better use of solar energy, the company said. An electric heating element absorbs between 1 kW and 6 kW power.
At a power temperature of 55 ° C in a moderate climate, the system has an annual performance coefficient (COP) of 3.83. With undervrache heating, which only requires 35 ° C, the COP rises to 4.74. The Pekelinhal temperature varies from minus 20 ° C to 50 C.
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