1006 CHAPTER 49 1950 Guide where Vm = velocity, feet per minute.

1038 19S0 Guide CONDUITS.

HEATING VENTILATING AIR CONDITIONING GUIDE 1951 An Instrument of Service Prepared for the Profession containing A TECHNICAL DATA SECTION OP REFERENCE MATpRTAT..

16 CHAPTER 2 1951 Guide 1 atmosphere 1 in. water at 62 F (in vacuo) 1 ft water at 62 F (in vacuo) 1 in. mercury at 62 F (in vacuo) lin. mercury at 32 F (in vacuo) 14.626 lb per square inch 2116 lb per square foot 83.64 ft water at 62 F 80.01 in. mercury at 62 F 29.921 in. mercury at 32 F {0.03609 lb per square inch 0.6774 oz per square inch 6.167 lb per square foot ( 0.4330 lb per square inch \ 62.37 lb per square foot (0.4897 lb per square inch 7.835 oz per square inch 1.131 ft water at 62 F 13.57 in. water at 62 F 0.49116 lb per square inch Metric Units 1 cm 1 in. 1m 1 ft 1 sq cm 1 sq in. 1 sq m 1 sq ft 1 cu cm 1 cu in. 1 cu m 1 cu ft 1 liter 1 metric ton 1 gram 1 kilometer per hour 1 gram per square centimeter 1 kg per sq cm (metric atmosphere) 1 gram per cubic centimeter 1 dyne 1 absolute joule 1 Int. joule 1 metric horsepower 1 I.T. kilocalorie per kilogram 1 I.T. calorie per square centimeter = 0.3937 in. = 0.0328 ft = 2.640 cm = 3.281 ft = 0.3048 m = 0.1660 sq in. = 6.452 sq cm = 10.76 sq ft => 0.09290 sq m = 0.06102 cu in. -- 16.39 cu cm = 35.31 cu ft = 0.02832 cu m = 1000 cu cm = 032642 gal = 2.205 lb (avdp) = 0.4636 kg -- 2205 lb (avdp) = 0.002205 lb (avdp) = 0.6214 mph / 0.02905 in. mercury at 62 F \ 0.3942 in. water at 62 F = 14.22 lb per square inch / 0.03613 lb per cubic inch \ 62.43 lb per cubic foot = 0.00007233 poundals _ / 10,000,000 ergs \ 0.7376 ft-lb = 0.7378 ft-lb / 75 kg-m per second \ 0.986 hp (U.

24 CHAPTER 3 1951 Guide velocity, and energy in the form of enthalpy.

262 CHAPTER 12 1951 Guide Table 3.

366 CHAPTER 14 1951 Guide 4 Automatic Mechanical Draft Oil Burners Designed for Domestic Installations (U.

790 CHAPTER 36 1951 Guide low temperature is pumped out of the evaporator and used at the point where it is required.

964 CHAPTER 46 1951 Guide Table 1 gives an approximate classification of materials which are most likely to obey Equations 19 and 20.

402 CHAPTER 15 1952 Guide Radiant heaters are required to have a radiant efficiency of not less than 28 percent.

July J Nov. ] ec.D Nov, 430 CHAPTER 17 1952 Guide Table 2.

476 CHAPTER 20 1952 Guide ' Each heating unit in a vapor system, as in all two-pipe systems, is pro vided with a graduated or modulating valve which permits the control of heat in the radiator by. varying the opening of thevalve.

630 CHAPTER 29 1952 Guide coil F is required to warm the air to a temperature above freezing.

698 CHAPTER 31 ...

784 CHAPTER 35 1952 Guide Ata = logaritfimic mean temperature- difference between. airarid::c6il surface = t\ - i., h ^ t. log. fa -- f .