Domestic Hot Water and Heating

  • SBE21 conference spotlights historic NZEBs

    SBE21 conference spotlights historic NZEBs

    The SBE21 Heritage conference in mid-April involved a deep exchange of ideas between researchers, architects and practitioners about how to reduce the energy consumption of historic buildings while retaining their aesthetic features and cultural significance. The main contributors to the...
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  • How to design an 85 % solar-heated and 100 % solar air-conditioned house

    How to design an 85 % solar-heated and 100 % solar air-conditioned house

    During an online meeting from 1 to 2 July, the IEA Solar Heating and Cooling programme will launch a new global research platform called Task 66 Solar Energy Buildings. The researchers participating in the new task intend to develop and popularise a building standard focused on...
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  • Opposing trends on India’s solar thermal market 2020

    Opposing trends in India’s solar thermal market 2020

    In 2020, hopes for growth in India’s solar thermal market were dashed when Covid-19 spread like wildfire around the globe, causing a 10 % drop in annual capacity additions. A survey conducted by Malaviya Solar Energy Consultancy indicates 1.15 GWth (1.64 million m2) of...
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  • “RHC becomes far cheaper than fossil energy in every way”

    “RHC becomes far cheaper than fossil energy in every way”

    Which research and innovation priorities need to be set for buildings, industry, cities and districts to boost the renewable heating and cooling market? The new Strategic Research and Innovation Agenda for Climate-Neutral Heating and Cooling (SRIA) aims to answer this question by outlining...
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  • China sees strong growth in demand for solar space heating

    China sees strong growth in demand for solar space heating

    The Chinese solar thermal industry ended the pandemic year on a high note, as companies in the sector sold a total of 27.038 million m2 (18.9 GWth) of collector area throughout 2020, leading to a fairly low annual decline of only 5 % compared to 2019. Solar thermal...
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  • Little known VAT exemption in Senegal

    Little known VAT exemption in Senegal

    Senegal could see an increase in demand for solar water heaters after the government introduced VAT exemptions for solar thermal and PV. Decree No. 010158, signed by the Minister of Finance and Budget and the Minister of Petroleum and Energy in summer 2020, states that 22 components...
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  • Financial and environmental benefits of solar heat pumps

    Financial and environmental benefits of solar heat pumps

    As a source of energy for brine heat pumps, a PV-thermal collector field is well suited to reducing power demand in existing and to-be-renovated single-family homes, researchers at the Zurich University of Applied Sciences, also known as ZHAW, have found. They compared combinations of PVT...
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  • High expectations in Brazil despite Covid-19 worries

    High expectations in Brazil despite Covid-19 worries

    The solar thermal market in Brazil grew by about 6 % in 2019, adding 1.32 million m2 (0.93 GWth) despite a turbulent economy. The surge came in part due to new commercial customers that require large quantities of hot water and followed four years of steadily declining...
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  • EU to have 35 million building units renovated by 2030

    EU to have 35 million building units renovated by 2030

    This October saw the unfolding of two landmark events that will have a major impact on renewable energy markets for decades to come. On 14 October, the Renovation Wave communication was published, its aim being to “at least double the annual energy renovation rate of residential and non-...
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  • Solar houses: above 95 % solar fraction is possible

    Solar houses: above 95 % solar fraction is possible

    Between 2014 and 2019, the Austrian Climate and Energy Fund supported the construction of over 100 solar-heated houses, 19 of which were monitored following completion. Regardless of whether it was a lightweight or a brick house that was put up, the rooftop or facade collector system...
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  • 50 new solar hot water systems at Turkish prisons in three years

    50 new solar hot water systems at Turkish prisons in three years

    Turkey’s regulations on installing solar energy equipment in buildings with over 1,000 m2 of floor area has resulted in a growing number of centralised solar hot water systems in prisons over the last years. The above photo shows one of those installations, a 3,363 m2 solar hot...
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