| Abstract: | In the present study, the filtration coefficient of an acetyl cellulose tubular‐type osmotic membrane is measured with two methods using reverse osmosis and osmosis processes. In addition, the effects of temperature and concentration on the physical properties of fluids needed for studies on osmosis are examined using sodium chloride, potassium chloride, sucrose, and polyethylene glycol 600 aqueous solutions as test fluids. As a result, a new method for measuring the filtration coefficient for osmosis is proposed. Moreover, the present study reveals that little difference exists between the filtration coefficients for these processes. In addition, relations for estimating mass diffusivities, osmotic coefficients, viscosities, and densities of fluids are presented. © 1999 Scripta Technica, Heat Trans Asian Res, 29(1): 72–90, 2000 |
