heat pump

UK-based boiler specialist Ideal Heating has opened its first heat pump production in Hull, England. It said that it has invested around GBP 60 million ($76.5 million) in the new production line.

A UK-Chinese research group designed a dual-source heat pump (DSHP) that recovers the waste heat from the exhaust air along with absorbing the heat from the outdoor air. A prototype installed on the roof of a building in the UK showed remarkable results in terms of coefficient of performance and annual heating bill savings.

UK researchers suggested utilizing heat pumps to preheat hydrogen to very high temperatures, which they said could reduce the need for hydrogen by more than 20%. The process is also claimed to have the potential to reduce the European industry’s energy demand by approximately 200 TWh per year.

Israeli developer Tigi Solar is deploying an industrial heat pump to support the heating system at the facility of a food industry enterprise in Israel. The heat pump has an output of 780 kW and a coefficient of performance (COP) of 4.6. It uses existing ammonia chiller waste heat as the heat source and can reportedly provide a hot water temperature of 65 C.

Scientists in Italy have developed a 5 kW direct-expansion solar-assisted heat pump that uses alternatively two different evaporator technologies. The cooling of the PV module unit by CO2 evaporation increases power production by 8%.

The novel heat pump, developed by a research group in Israel, consists of a loudspeaker, a resonator, and a thermoacoustic core placed inside the resonator. The core includes a cold heat exchanger, a stack, and an ambient heat exchanger.

Germany’s Fraunhofer Institute for Applied Solid State Physics (IAF) has developed an ultra-efficient circuit topology for voltage converters with an electrical efficiency of 99.74%. The tech could considerably raise the coefficient of performance for electrocaloric heat pumps and the scientists are now considering components based on semiconductor gallium nitride (GaN) for higher power density and efficiency.

Scientists in Italy have coupled a solar-powered air heat pump with a water tank for thermal energy storage to provide hot water to a residential building as a retrofit solution. They claim that the proposed system configuration can achieve a “desirable” thermal performance while reducing annual electricity consumption.

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.

Spanish scientists have proposed a new approach to combine photovoltaic-thermal panels with a reversible air-to-water heat pump in industrial buildings. The system is intended to provide space heating, cooling, domestic hot water, and electricity.