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<br />Studies are under way to increase the heat transfer coefficient by <br /> <br /> <br />promoting drOp-wise condensation of the vapors. At the present time, the <br /> <br />"""'" <br />c.o <br />I:.J1 <br />O'J <br /> <br />tube vapor side heat transfer resistance is approximately equal to that <br /> <br />on the fluid side and the fouling factor, Doubling the coefficient on <br /> <br />the vapor side could result in savings on capital charges of approximately <br /> <br />1. 49/kgal. <br /> <br />In summary J a number of modest reductions in water cost's for the <br /> <br />MSF will result from changes in construction materials, operating oon- <br /> <br />ditions, and 'plant design. However, the greatest reduction in water <br /> <br />costs will result from lower steam costs, which can be expected from large <br /> <br />dual-purpose 'electric power-water desalting plants. <br /> <br />25 <br /> <br />jp",,", <br /> <br />