Paxos Solar has developed a brand new glass PV tile that integrates warmth pumps, that includes Longi’s back-contact photo voltaic cells. A 44 W, 59.5 cm x 48 cm tile may also produce warmth for a residential system.
From pv journal Germany
Paxos Solar, a German building-integrated photovoltaic (BIPV) specialist, has developed a brand new photo voltaic tile that not solely generates electrical energy but additionally produces warmth for warmth pumps.
The tile is a small glass-glass module that measures 59.5 cm x 48 cm and delivers 44 W output. About 4.3 tiles will probably be put in per sq. meter, giving a complete output of 190 W.
The modules function extremely environment friendly back-contact cells from Longi in China. It is totally black on the entrance with a matte-structured floor that catches the angled mild. Paxos Solar’s technical director, Julian Münzberg, mentioned the modules had been manufactured by a companion in China.
“The flat photo voltaic tile is bigger than different merchandise available on the market,” says Münzberg. This makes set up simpler and likewise offers extra energy on high. Connections to home windows or chimneys could be reduce to any dimension, and there’s no want to make use of a complementary roof tile.”
The firm makes use of the modules to create energy-efficient roofs. It initially lays a layer of cheap trapezoidal sheeting over the insulation to behave as a dense, waterproof layer. Next, it locations the assist rails on high of this layer, the place they hold the glass tiles on the roof. Each tile has a glued rail on its backside edge for this objective. The high fringe of the subsequent module overlaps and sticks to the underside module.
Since the photo voltaic tiles don’t overlap the edges however are pushed with a 1 mm hole, some water can penetrate and drain the trapezoidal sheeting.
The decrease fringe of the roof and the assist rails, which run throughout the raised ridges, are perforated and permit air to cross by way of. When daylight heats the air below the modules, it rises between the raised ridges in direction of the roof ridge and is collected in a pipe.
“When the temperature is at the least one Kelvin above the ambient temperature, it’s applicable to change on the pipe fan built-in there and blow scorching air into the warmth pump,” mentioned Münzberg.
The Technical University of Cologne examined and measured the idea, mentioned Guido Schumacher, CFO and companion of Paxos Solar. The college’s warmth pump requires 20% much less power per yr in comparison with the identical gadget with out further warmth era. The scorching air is directed to the consumption pipe of the warmth pump, which is positioned below the roof. For longer distances, insulated spiral-seam or stainless-steel pipe can be utilized.
Schumacher mentioned a sq. meter of photo voltaic flat tile, together with trapezoidal sheeting and mounting rails, prices €260 ($289.30). This signifies that 1 kWp corresponds to a cloth price of €1,400. Initial buyer installations present that establishing a multi-energy roof takes about half the time of a conventional roof masking and set up. The roof additionally weighs 31 kg per sq. meter, which is lighter than typical concrete roof tiles.
In addition to black flat tiles, Paxos gives PV beavertail roof tiles for listed buildings.
“There has been lots of curiosity in our roof tiles, significantly from house owners of listed buildings,” says Schumacher.
The firm plans to put in photo voltaic panels on about 200 roofs within the coming yr. It is funding additional development by way of a crowdfunding marketing campaign that goals to boost €1.2 million in 80 days. Investors can begin with €100, and those that make investments greater than €25,000 will obtain shares within the firm.
Paxos Solar can be behind a PV roof tile that will probably be bought to Meyer Burger and is at present being put into sequence manufacturing.
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