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Water vapor diffusion resistance is an important property of porous membranes. In the paper, a new apparatus for specially measuring the water vapor diffusion resistance of porous membranes was developed. In the new apparatus, the humidity of circulating carrier air streams flowing over both sides of test membrane are controlled by different saturated salt solutions, which makes a variety of humidity...
Heating/cooling cost allocation is of growing concern in many countries because it contributes much to the energy conservation of central air-conditioning system. This paper intends to summarize the current studies and techniques on the heating/cooling cost allocation and discuss about the key problems to them. The contents mainly include the following parts: (1) probing into the methods of heating/cooling...
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