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Toshiba combines heat pumps, rooftop PV, storage in residential home – pv magazine International


Japan’s Toshiba has shared the outcomes of a “future-proof” housing mission in the UK. It combines two 11 kW air-source warmth pumps in a five-bedroom home in Chester, England, with a 16 kW PV system and an 11 kW battery. The property is reported to be power impartial in the summertime months.

A UK home-owner put in two air-source warmth pumps, a rooftop PV system, a battery, and two variable refrigerant movement (VRF) techniques at a property in Chester, England.

The “future proof” set up has been in operation since December. It has two 11 kW Toshiba ESTIA air-to-water warmth pumps for area heating, home scorching water, and cooling in the summertime months. Warmth pumps use R32 as refrigerant and have a coefficient of efficiency (COP) of as much as 4.88.

One of many ESTIA techniques serves about 90 sq. meters of underfloor heating within the open-plan kitchen and eating room, whereas the opposite gives scorching water. It additionally heats the higher radiators and towel rails from the 300-litre water tank. ESTIA indoor items embrace a 3 kW backup heater to make sure operation at low ambient air temperatures. Toshiba says the system delivers scorching water at 62 C when the skin temperature drops to -25 C.

The warmth pumps are powered by a 16 kW rooftop PV system from an undisclosed producer. Extra power is saved in an 11 kW battery power storage system. Home-owner and renewables advisor David Meseck mentioned the property is now “power impartial” in the summertime months, with generated and saved power offsetting electrical energy consumed from grid.

“The entire system has been working since December of final yr and the best way the home has modified is wonderful,” Meseck mentioned. “It is necessary to get every little thing proper; the mission is sized accurately and the tools is put in accurately. Together with different measures, we now have an environment friendly, all-electric heating system with the additional advantage of cooling in the summertime, and the annual price of servicing is corresponding to the boiler cowl. In addition to serving to future proof our house and lowering power prices, the modifications have elevated property worth.

The system was put in by Mansfield-based Woburn Mechanical Companies.

“That is by far the largest home mission we have ever executed,” mentioned installer Peter Franks. “The shopper is aware of what he desires and now has a complete heating and cooling system. Toshiba tools is great when it comes to efficiency and reliability and comes with a seven-year guarantee. We would not be value it with out we’re absolutely assured in it.”

Putting in rooftop PV

Picture: Toshiba

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