By W. P. Jones
Designed for college kids engineers, the 5th version of this vintage textual content offers with basic technology and layout rules of air con engineering structures. W P Jones is an said professional within the box, and he makes use of his event as a lecturer to give the cloth in a logical and available demeanour, continually introducing new strategies with using labored examples. This new version has been totally up to date take into consideration the newest advancements in criteria, laws and expertise. The publication contains fresh learn on construction power administration structures and the most recent refrigerants. each one bankruptcy includes many examples, workouts and additional interpreting permitting the reader to extend their wisdom via extra examine. ?·Keep updated with the most recent criteria and technology?·Put concept into perform with examples and routines plus info for extra reading?·New variation contains contemporary learn on construction power administration platforms and the newest refrigerants
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Extra resources for Air Conditioning Engineering, Fifth Edition
Ha hc~ l hb I I" C " I I t~ tb t~ I t~ I Fig. 4 Cooling and dehumidification by a cooler coil or an air washer. 46 The psychrometry of air conditioning processes state A of the moist air entering the coil, the state B of the air leaving the coil, and the mass flow of the associated dry air. What happens to the state of the air as it passes between points A and B is seldom of more than academic interest. Consequently, it is quite usual to show the change of state between the 'on' and the 'off' conditions as occurring along a straight line.
4. H. K. H. R. Gilliland, Principles of Chemical Engineering, McGraw-Hill, 1937. 5. W. Goodman, Air Conditioning Analysis with Psychrometric Charts and Tables. The Macmillan Company, New York, 1943. 6. A. Goff and S. Gratch, Low-pressure properties of water from -160 to 212F. Trans. ASHVE, 1946, 52, 95-122. 7. P. G. Lawrence, New psychrometric data for air, National College for Heating, Ventilating, Refrigeration and Fan Engineering, Technical Memorandum No. 11. 8. B. H. Cole, Engineering Thermodynamics, Edward Arnold (Publishers) Ltd, 1961.
Familiarity with the psychrometric chart is essential for a proper understanding of air conditioning. Any point on the chart is termed a state point, the location of which, at a given barometric pressure, is fixed by any two of the psychrometric properties discussed in chapter 2. It is customary and convenient to design charts at a constant barometric pressure because barometric pressure does not alter greatly over much of the inhabited surface of the earth. When the barometric pressure is significantly different from the standard adopted for the chart or psychrometric tables to hand, then the required properties can be calculated using the equations derived earlier.
Air Conditioning Engineering, Fifth Edition by W. P. Jones