,66 CHAPTER 3 1953 Guide LETTER SYMBOLS.

470 CHAPTER20 1953 Guide' Fig. 4.

544 CHAPTER 23 1953 Guide of the height of the discharge grille above the heating element.

742 CHAPTER 34 1953 Guide clogging dirt mat on the filter face.

812 CHAPTER 37 oni a*vn&s b3d soNnod - 3nss3bd nmosov. 1953 Guide HDM 3HvndS 3d SONftOd - 3nsS3Hd 3i/no$SV of refrigerant which is present in vapor form.

'900 CHAPTER. 41 . ,.1953 Guide Sound Control Fig. 6.

954 CHAPTER 44 . 1953 Guide large air.conditioning, installations, using .high quality equipment; some approximate costs per ton are given in Table 4. . . > :i SERVICE COSTS Service costs include the costs for power, water, steam, coal, oil, etqi, consumed to operate the system.

962 CHAPTER 45 1953 Guide Table 1..

@3 Jd ir--M1 Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL - - decision* and trends MARCH, 1954 (Vol. 18, No. 3) C=3 INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13.

-,r FACTS tmtumurn HjrataM t* rwMM to* iiwyiW MMlaUM * fw Wo W hMlttfrt WM'lrim MAeMiM* 15 December, 1953.

CONTENTS (Concluded) SECTION V.

172 CHAPTER 9 1954 Guide k2Table : Conductivities ( ) and Conductances (C) of Building and Insulating Materials--Contmued ` These constants are expressed in Btu per (hour) (square foot) (Fahrenheit degree temperature difference).

604 CHAPTER 26 1954 Guide Many prime surface coils utilize flooded expansion as obtained with a float valve to improve the heat transfer coefficient.

1004 CHAPTER 46 1954 Guide openings are kept to a minimum size and are placed away from the natural path of the contaminant travel wherever possible.

1020 CHAPTER 46 1954 Guide - exhausted from a hood cannot change without a change in hood suction reading.