By W. P. Jones

Designed for college kids engineers, the 5th variation of this vintage textual content offers with basic technological know-how and layout rules of air-con engineering platforms. W P Jones is an stated professional within the box, and he makes use of his event as a lecturer to offer the cloth in a logical and obtainable demeanour, consistently introducing new innovations with using labored examples. This new version has been absolutely up to date take into consideration the newest advancements in criteria, laws and know-how. The booklet comprises fresh study on development strength administration platforms and the newest refrigerants. each one bankruptcy comprises many examples, workouts and additional studying permitting the reader to extend their wisdom via extra study. ?·Keep up to date with the most recent criteria and technology?·Put thought into perform with examples and routines plus details for extra reading?·New version contains contemporary study on development power administration structures and the newest refrigerants

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Extra info for Air Conditioning Engineering, Fifth Edition, 5th Edition

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15, 4, 189-198. National Engineering Laboratory Steam Tables (1964): HMSO. NBS Circular 564 (1955): Tables of thermal properties of air, November. , 32. J, (1962): Thermal Environmental Engineering, Prentice-Hall, New York, p. 175 Bibliography l. A. Goff and S. Gratch, Thermodynamic properties of moist air, Trans. ASHVE, 1945, 51, 125. 2. H. McAdams, Heat Transmission, McGraw-Hill, 1942. 3. G. Kern, Process Heat Transfer, McGraw-Hill, 1950. 4. H. K. H. R. Gilliland, Principles of Chemical Engineering, McGraw-Hill, 1937.

007 34 kg per kg dry air at a barometric pressure of 95 kPa. 0) A more exact agreement would be obtained if the influences of intermolecular forces were taken into account. 19. 22 Fundamental properties of air and water vapour mixtures The thermodynamic properties of dry air and steam are well established. Hence the general principle followed by ASHRAE (1997), Goff (1949) and CIBSE (1986) in the expression of the volume of moist air is to add to the volume of 1 kg of dry air (Va), a proportion of the difference between the volume of saturated air (Vs), and that of dry air (Va).

Q < 40 30 20 . 6132 kPa "--" -20 ~ --" 0o 20 ~ , , 40 ~ 60 ~ 80 ~ Temperature Fig. 10 The triple point of water. 100 ~ 34 Fundamental properties of air and water vapour mixtures and vapour, as changes of pressure and temperature occur. 2 Pa is defined by international agreement as the temperature at which the solid, liquid and vapour forms of water can exist together in saturated equilibrium. 15 K), respectively. We see in the figure that it is not possible for liquid water to exist at a pressure below that of the triple point.

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