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Desiccant wheels have been widely used for humidity treatment: air dehumidification and total heat recovery. Since the operating conditions are different, heat and mass transfer behaviors in the wheels are quite different. This study aims at investigating the performance of honeycomb type desiccant wheels for total heat recovery with various solid desiccant wall materials. A one-dimensional, transient...
This study aims at comparing the performance of honeycomb type adsorbent beds (or desiccant wheels) for air dehumidification with various solid desiccant wall materials, from a viewpoint of system operation. A mathematical model is proposed and validated to predict the cyclic behaviors of the cycling beds or wheels. The influences of regeneration air temperature, process air temperature, and humidity...
A direct expansion (DX) air dehumidification system is an efficient way to supply fresh and dry air to a built environment. It plays a key role in preventing the spread of respiratory disease like Swine flu (H1N1). To improve the efficiency of a conventional DX system in hot and humid regions, a new system of DX in combination with a membrane-based total heat exchanger is proposed. Air is supplied...
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