Water-filled windows can save 35% on building cooling and heating

Water-filled windows can save 35% on building cooling and heating

Scientists have found that water-filled windows connected to a recirculation system can significantly reduce the energy consumption of a building in any climate..

Heating and cooling houses is an expensive pleasure, since they consume a lot of energy in winter and summer, the production of which also pollutes the atmosphere (up to 40% of total emissions). However, Dr. Mathias Gutai from Loughborough University decided to use the concept of Japanese baths, the windows of which are filled with water to keep the interior warm..

Together with a colleague from the Technical University of Kaiserslautern, he developed a revolutionary recirculation system. It consists of liquid-filled windows that are piped in the walls to the larger mechanical building system, heat pump and reservoir..

During warm periods, water absorbs internal and external heat, transferring it to the storage tank. When the temperature drops, the stored energy can be used for heating using the same pipes in the walls, or as a source of hot water.

Savings are achieved due to the fact that pumping liquid requires significantly less energy than existing heating, ventilation or air conditioning systems. At the same time, window panels remain transparent and do not require additional painting or darkening..

Studies have shown that such a system can be effectively used in all major climatic zones except Antarctica and Antarctica. It will save 47% -72% energy compared to double glazed windows and 34% -61% compared to triple glazing. An added bonus of the water layer is improved sound insulation.

Matthias Gutai tested his idea on two prototype buildings with filled windows in Hungary and Taiwan.

Water-filled windows can save 35% on building cooling and heating

Recall that last year, researchers also found a way to improve the heat transfer of heating systems by 500%..

text: Ilya Bauer, photo: Loughborough University

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