824 CHAPTER 45 1946 Guide In many processes, the optimum desired air conditions are variable according to the stage and progress of the processing cycle, from the raw material'to the finished product.

8S&' INDEX TO ADVERTISERS Heating Ventilating Air Conditioning Guide, 1946 A .

246 CHkPTER 14 1948 Guide where B -- air leakage per (hour) (foot of crack) (Chapter 8) for the.wind velocity and type of windows or door crack involved multiplied by 0.018.

510 CHAPTER 26 ,1948 .

714 CHAPTER 39 1948 'Guide compressor with increase in evaporator temperature: - Similarly, the capacities of the steam ejector and centrifugal compressors increase more rapidly than those of the reciprocating compressor with increase inevaporator temperature.

734 CHAPTER 40 1948 Guide - In all types of ceiling air distribution the following should be noted: If cold air is used it must be brought to the proper temperature by mixing with room air before entering the zones of occupancy. seleAcitredslfigohr tclyooalibnogv.e room temperature will usually be properly distributed by outlets : When delivering warm air the same may be projected downward and the amount of dispersal of the jet varied to obtain proper mixing and control. 2.

740 CHAPTER 40 1948 Guide outlet) of the air, based on tests 6, are shown in Fig. 6 for various types of stack heads expanding from a 14 in. x 6 in. stack to 14 in. x 9 in. outlets, without grilles.

770 CHAPTER 42 1948 Guide APPARATUS FOR MEASURING NOISE Since the relative loudness to the ear, rather than the actual physical intensity, is the quantity in which engineers are usually interested, it has been found necessary to allow for the varying response of the ear at . different frequencies in designing noise measuring equipment.

782 i CHAPTER 42 1948 Guide Grille Selection / ' In practice the allowable total sound and the required air flow are usually known, and it is desired to determine the maximum allowable Velocity.

106 Heating - Ventilating.

254 CHAPTER 14 1949-Guide Table 1.

592 CHAPTER 28 <1949.

732 CHAPTER 37 .1949' Guide Because the design of an entire plant is usually affected by the quantity and .temperature of the cooling water supply; plants should be designed for cooling water conditions which can be most efficiently attained.

804 CHAPTER 40 , 1949, Guide velocity be not in excess of 75 per cent of the maximum permissible outlet velocity.

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