American Society of Heating and Ventilating Engineers Guide, 1937 Based on an average cost of coal, water and locomotive lubrication of $0.001133 per pound of fuel burned and the following assumptions: generator and drive efficiency 80 per cent, locomotive mechanical ef ficiency (cylinders to tender draw-bar) 90 per cent, 3.5 lb coal per cylinder horsepower and' 6 lb of water per pound of coal, the cost of generating 1 kw of electrical energy would be $0.00738, and 100 lb of steam $0.01888.

GP-1936 BESTWALL < JOINT SYSTEM PRODUCTS f t' Bestwall offers a complete line of^Jojnt System Products, designed to conceal joints and nail heads, and to "surface-weld"|:JJestwall Gypsum Wallboard panels together.

American Society of Heating and Ventilating Engineers Guide, 1937 A check valve is inserted in the return main at a point near the boiler and a vertical pipe is run up into the bottom of the return trap, which usually is located with the bottom about 18 in. above, the boiler water line.

American Society o/.Heating and Ventilating Engineers Guide, 1937- Lennox Furnace Co., Inc., 864-865 Delco-Frigidaire Conditioning Di FITTINGS, Pipe, Solder Meyer Furnace Company, The, 866 L.

Heating Ventilating Air Conditioning Guide 1938 PROBLEMS IN PRACTICE 1 What two natural forces cause infiltration?

Heating Ventilating Air Conditioning' Guide 1938 be selected by size since surface conditions in service are always undeterminant.

Heating Ventilating Air Conditioning Guide 1938 this speeds up the heat transfer rate.

7 Heating Ventilating Air Conditioning Guide 1938 Table 3.

Heating VentiiiAting Air Conditioning Guide 1938 DRISCOLL, William H-* (M 1904), (Presidential Member), (Pres., 1926; 1st Vice-PTes., 1925; 2nd Vice-Pres., 1924; Treas., 1923; Council, 1918-1927), Vice-Pres.

Heating Ventilating Air Conditioning Guide 1939 gases, such as sulphur dioxide and sulphuric acid mist, which are dis charged with the gases of combustion.

Heating Ventilating Air Conditioning Guide 1939 HEAT TRANSFER COEFFICIENTS The symbols representing the various coefficients of heat transmission and their definitions are as follows: U = thermal transmittance or over-all coefficient of heat transmission; the amount of heat expressed in Btu transmitted in one hour per square foot of the wall, floor, roof or ceiling for a difference in temperature of 1 deg F between the air on the inside and that on the outside of the wall, floor, roof or ceiling. k = thermal conductivity; the amount of heat expressed in Btu transmitted in one hour through 1 sq ft of a homogeneous material 1 in. thick for a difference in temperature of 1 deg F between the two surfaces of the material.

Heating Ventilating Air Conditioning Guide 1939 tures of the various parts of a wall are controlled by the type and amount of insulation used and the vapor densities in the corresponding sections are controlled by the type of vapor barriers installed.

Heating Ventilating Air Conditioning Guide 1939 Chapter 8.

Heating Ventilating Air Conditioning Guide 1939 air entering by each of the three intakes is reduced in the same proportion.

Heating Ventilating Air Conditioning Guide 1939 flues, as (1) horizontal return tubular (HRT) boilers, (2) portable (self, contained) firebox boilers with either water or fire tubes, and (3) water tube boilers of the power type.