Document MJyMGzjBLd9bgwZ4mXkN2mbey

14 , CHAPTER 2 1948 Guide THE GREEK ALPHABET A a' Alpha B $ Beta r y Gamma A' 8 Delta E e Epsilon Z Zeta H i) Eta 6 Theta I t Iota K k Kappa . A X Lambda M p Mu Nv Nu S g xi O o Omicron n x Pi P p Rho Has Sigma .... T t Tau T u Upsilon 4> 9 Phi X x Chi T' 4> Psi Q a: Omega CONVERSION EQUATIONS5 Heat, Power and Work 1 ton refrigeration Latent heat of ice 1 Btu 1 Int. watthour 1 Int. kilowatthour 1 Int. kilowatt (1000 watts) 1000 I.T. calories \ 1 I.T. Kilocalorie / 1 horsepower - 1 boiler horsepower / 12,000 Btu per hour \ 200 Btu per minute = 143.4 Btu per pound ' 778.3 ft-lb 0.2930 Int. whr 262.0 I.T. calorie 2656 ft-lb 3.413 Btu 3600 Int. joules 860 I.T. calories' 3,413 Btu' 3.517 lb water evaporated from and at 212 F 1.341 hp 56.88 Btu per minute 44,267 ft-lb per minute 3.968 Btu 3088 ft-lb 0.7455 Int. kw 42.40 Btu per minute 33,000 ft-lb per:minute 550 ft-lb per second / 33,475 Btu per hour \ 9.809 Int. kw Weight and Volume 1 gal (U. S.) 1 British or Imperial gallon 1 cu ft 1 cu ft water at 60 F (in vacuo ) 1 cu ft water at 212 F ( " " ) 1 gal water at 60 F ( " " ) 1 gal water at 212 F ( " " ) 1 lb (avdp) 1 bushel 1 short ton _ _ / 231 cu in. " \ 0.1337 cu ft = 277.42 cu in. = / 7.481 gal \ 1728 cu in. = 62.37 lb = 59.83 lb = 8.338 lb = 7.998 lb _ f 16 oz l 7000 grains = 1.244 cu ft = 2000 lb `Checked in 1944 by National Bureau of Standards. Abbreviations Int. and I.T. refer to International and International (Steam) Table respectively. Abbreviations and Symbols IS Pressure 1 lb per square inch . 1 oz per square inch 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) 1 in. mercury at 32 F (in vacuo) 144 lb per square foot . 2.0360 in. mercury at 32 F 2.0422 in. mercury at 62 F ' 2.309 ft water at 62 F 27.71 in. water at 62 F -{ 0.1276 in. mercury at 62 F 1.732 in. water at 62 F 14.696 lb per square inch 2116 lb per square foot 33.94 ft water at 62 F 30.01 in. mercury at 62 F 29.921 in. mercury at 32 F ' 0.03609 lb per square inch 0.5774 oz per square inch , 5.197 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 = 0.49115 lb per square inch Metric Units 1 cm = 0.3937 in. = 0.0328 ft 1 in. = 2.540 cm 1 m = 3.281 ft 1 ft = 0.3048 m 1 sq cm = 0.1550 sq in. 1 sq in. = 6.452 sq cm 1 sq m = 10.76 sq ft 1 sq ft = 0.09290 sq m 1 cu cm = 0.06102 cu in. 1 cu in. = 16.39 cu cm 1 cu m = 35.31 cu ft 1 cu ft ,= 0.02832 cu m 1 liter = 1000 cu cm = 0.2642 gal 1 kg = 2.205 lb (avdp) 1 lb = 0.4536 kg 1 metric ton 1 gram 1 kilometer per hour = 2205 lb (avdp) = 0.002205 lb (avdp) = 0.6214 mph 1 gram per square centimeter 1 kg per sq cm (metric atmosphere) _ f 0.02905 in. mercury at 62 F \ 0.3942 in. water at 62 F = 14.22 lb per square inch 1 gram per cubic centimeter 1 dyne = / 0.03613 lb per cubic inch ' \ 62.43 lb per cubic foot = 0.00007233 poundals 1 absolute joule 1 Int. joule _ / 10,000,000 ergs " \ 0.7376 ft-lb = 0.7378 ft-lb 1 metric horsepower {75 kg-m per second 0.986 hp (U. S.) I I. T. kilocalorie per kilogram = 1.8 Btu per pound 1 I.T. calorie per square centimeter = 3.687 Btu per square foot l I.T. calorie per (second) (square centimeter) for [2903 Btu per (hour) (square foot) a temperature gradient of 1 C deg per centi- jfor a temperature gradient of 1 F meter ' (deg per inch of thickness.