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Heat pump control strategy for solar assisted district heating

Researchers in Spain have proposed two control strategies for the integration of heat pumps in district heating systems assisted by solar thermal collectors. Their technical-economic analysis shows that the proposed combination can reduce reliance on gas while also reducing costs.

Air source heat pumps raise home prices

According to a recent study, installing an air source heat pump may increase a home’s value by up to 7.1% in 23 states of the United States. The price premium is estimated at between $10,400 and $17,000 per transaction and the average cost for installing an air source heat pump is around $8,000.

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The world’s hottest heat pump

A Norwegian consortium has built an industrial heat pump that can reach a temperature of up to 180 degrees Celsius. The machine can be used with different industrial processes that rely on steam as an energy carrier and can reduce a facility’s energy consumption by between 40% and 70%, as it enables the recovery of low-temperature waste heat.

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Integration methodologies for solar-assisted heat pumps

Italian scientists have assessed the technical potential of vapor compression heat pumps assisted by photovoltaic-thermal systems. They analyzed two main configurations of this combination describing the advantages and disadvantages of both solutions. The cheapest and easiest to deploy system is a single-source direct-expansion (DX) configuration for hot water for space heating or domestic hot water.

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New residential lithium-ion battery from Germany

The battery system, which is aimed at increased self-consumption, can handle a maximum DC input power of 18 kW and 1000 V.

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Switching from subsidization to taxation may improve uptake of heat pumps coupled to PV

According to a Swedish-Austrian group of scientists, the combined use of heat pumps and rooftop PV generation may be boosted in Europe by replacing current subsidies with a carbon tax policy. Their analysis showed that the profitability of this combination is strictly dependent on gas prices, and that a slight increase in gas prices would be crucial to sustain strong development.

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Scotland announces massive plan for heat pump deployment

The Scottish government wants to deploy renewable-powered heat pumps on at least 1 million homes and 50,000 non-domestic buildings by the end of this decade. For this purpose, it has created an advisory group and is now seeking to gather all potential stakeholders.

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Photovoltaics and geothermal heat pumps for domestic hot water heating

According to a new study from LUT University, domestic water heating costs may be reduced by combining rooftop PV with geothermal heat pumps. Scientists developed a control method to minimize these costs by taking advantage of cheap spot market electricity and maximized PV power generation, as well as considering heat demand, PV generation forecasts, and heat pump efficiency.

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Photovoltaics, heat pumps to rescue failed geothermal project in Poland

The Polish government is supporting a hybrid renewable energy project based on a deep-borehole heat exchanger (DBHE) whose heat pumps are powered by photovoltaics. The heat generated by the facility will be used for district heating.

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Massive plan for hybrid heat pump deployment in the Netherlands

The Dutch association of national-regional electricity and gas network operators, Netbeheer Nederland, is leading a plan to deploy up to 2 million hybrid heat pumps by 2030. The plan should be supported by a subsidy scheme by the government and enable the installation of at least 100,000 heat pumps per year from 2024.

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