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In this report, measurements are described that were done on the wire cloths of a Fine Wire Heat Exchanger. This heat exchanger consists of a centrifugal fan and a circular set of wire-cloths that are surrounding the fan. The fan blows air along the wire cloths, that consists of copper wire woven on capillaries through which (warm or cold) water flows. The ratio between heat transfer and friction of this Fiwihex fan is so high, that i t becomes possible to heat a room with a temperature difference of only 5°C between the water and the desired room temperature. Therefore, a Fiwihex can be used well in combination with other heat producing systems than a boiler, for example a solar panel, and heat storage in ground water. To gain more insight in the heat transfer and the friction of air that flows along such a wire cloth, measurements were done, in which the heat transfer coefficient, expressed as StPr2/3, and the friction factor were measured. For these measurements two types of wire cl
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In this report, measurements are described that were done on the wire cloths of a Fine Wire Heat Exchanger. This heat exchanger consists of a centrifugal fan and a circular set of wire-cloths that are surrounding the fan. The fan blows air along the wire cloths, that consists of copper wire woven on capillaries through which (warm or cold) water flows. The ratio between heat transfer and friction of this Fiwihex fan is so high, that i t becomes possible to heat a room with a temperature difference of only 5°C between the water and the desired room temperature. Therefore, a Fiwihex can be used well in combination with other heat producing systems than a boiler, for example a solar panel, and heat storage in ground water. To gain more insight in the heat transfer and the friction of air that flows along such a wire cloth, measurements were done, in which the heat transfer coefficient, expressed as StPr2/3, and the friction factor were measured. For these measurements two types of wire cl
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