Renewable energy producing unit for producing renewable energy for e.g. car, has turbine, where renewable energy is produced by compressed air and/or nitrogen as pressure on liquid for obtaining hydraulic pressure to drive turbine
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Storage heat exchanger
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Enameled tube for a high-pressure heat exchanger
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Apparatus for neutralising the flue gases and preheating the combustion air of heating plants
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Waste-gas heating system
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Heating appliance
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Heating installation
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Mixing pipe for the nozzle of oil burners
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Building heating means
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Return-flow oil burning installation - has closed receiver for returned oil in line from tank to burner and control valve further upstream
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Heating system for building - has system for neutralisation of boiler fumes
