By B. Kılkış, S. Kakaç (auth.), Birol Kılkısş, Sadık Kakaç (eds.)

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A in dotted lines. ----------------. 6 X (b) FIGURE 9. 0 4( 110=56. 7, AIR. ( c) AMMONIA VAPOR) 30 its working fluid temperature rises faster than the ammOnia /water system having one to two orders of magnitude larger value of b+. The physical reason is rather simple and straight forward: air has lower heat capacity but higher heat transfer coefficient than ammonia vapor. 54 cm dia$eter are used as the storage medium. Since the values of a for marble are so small, as shown in Table 3, the cond~ction effect is entirely negligible.

For the purposes of the present analysis, it will be assumed that the discharge pressure for the removal process is atmospheric. ) _(P ,. ) (p.. Po The implication of this assumption is easily seen by equations (33), (38), (50), and (52) to show that V"' (52) using (53) 52 Physically, this result indicates that All ~ ~ available due to ~ inlet pressures of ~ storage ~ removAl qAI flows ~ At greater than atmospheric pres sur. ly destroyed Qy viscous friction. sistance between the gas and the heat exchanger duct wall.

Those salt hydrates have the following features: (1) moderate fusion temperature T;f and (2) high latent heat of fusion h+ af. The solid lines in Fig. 10-a show the response of the working fluid, water. The temperature rises very rapidly immediately following the transient since the salt has heat capacity 1/3 less than that of water. At t+ of unity, the outlet temperature has reached almost fifty percent of its steady value. By this time, almost the entire salt is heated to its melting point. 6 II "1\'110 " II 1:.

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