solar and heating

Worcester Bosch’s new residential heat pumps are available in several versions, with output ranging from 4 kW to 30 KW. It says the new products can be cascaded up to six units.

Samsung claims its new product is able provide domestic hot water of up to 75 C when the outdoor temperature is between -10 C and 35 C. It relies on an enlarged heat exchanger that the company claims is capable of transferring more heat compared to a conventional outdoor unit.

Carrier, a US-based heating solutions provider, has introduced a new line of high-temperature heat pumps with capacities ranging from 30 kW to 735 kW, with hydrofluoroolefins as a refrigerant.

Swiss researchers conducted a survey among 1,582 single-family house owners located in Switzerland, Germany, and France to know more about their preference for leasing or buying a heat pump. They found that lease payments and lease contracts are crucial factors in decision-making, and that homeowners tend to prefer all-inclusive leasing products with lower monthly payments.

Lochinvar has developed a heat pump with a hot water supply of up to 70 C, with a coefficient of performance (COP) of 5.5. The system is entirely cascadable, offering outputs ranging from 88 kW to 880 kW. It also includes 455 liters of hot water storage capacity and uses propane (R290) as a refrigerant.

New research shows that hybrid heat pumps combining an electric heat pump and a gas boiler represent a technically feasible and economically viable solution to partially decarbonize heat supply in older dwellings. Gas and electricity prices, however, are crucial factors in real scenarios.

An international research team has fabricated a heat-driven thermoacoustic heat pump prototype that is claimed to achieve a heating capacity of 5.7 kW and a coefficient of performance of 1.4, with a heating temperature of 300 C and a heat-sink temperature of 55 C. The device uses medium/low-grade heat sources and is purportedly able to offer a complementary solution to the existing domestic heating methods.

Developed by Chinese researchers, the system is designed to reach a heating capacity of 5.7 kW and an overall coefficient of performance of 1.40 at nominal conditions. It is made with an engine unit, a heat pump unit, and a gas resonator unit in a loop.

A set of amendments to Germany’s law that offer a rebate program for sustainable heating has come into effect on January 1st. The new rules grant rebates of up to 40% to help homeowners to buy and install heat pumps.

Sprsun has developed a monobloc heat pump that is reportedly easier and faster to install. The product features a 3 kW/220 V electric heater, a water pump, an expansion tank measuring 5 liters, a three-way valve, and an 18 A AC contactor.