Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 158. Illustrating Application of Forced Hlast for Warming a Factory,exhaust steam in the heater. The air is to be returned to the heaterfrom the building, and the whole amount contained in the buildingis to pass through the heater every 15 minutes. What size of blower 191 182 HEATIXC AXD VKXTILATION will be required, and whal will be the II. 1*. of tin* engine required to run it? How many linear fed of 1-inch pipe should the heater eon-tain? 1-foot \s. { 0 H. P. engine. 1,071 feet of Fig. 159. Centr
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 158. Illustrating Application of Forced Hlast for Warming a Factory,exhaust steam in the heater. The air is to be returned to the heaterfrom the building, and the whole amount contained in the buildingis to pass through the heater every 15 minutes. What size of blower 191 182 HEATIXC AXD VKXTILATION will be required, and whal will be the II. 1*. of tin* engine required to run it? How many linear fed of 1-inch pipe should the heater eon-tain? 1-foot \s. { 0 H. P. engine. 1,071 feet of Fig. 159. Centrifugal Blower Producing Forced Blast for Heating a Shop. 2. Find .the size of blower, engine, and heater for a factory200 feet long, 60 feet wide, and having 4 stories, each 10 feet high,using live steam at 80 pounds pressure in the heater, and changingthe air every 20 minutes by taking in cold air from out of doors. 6-foot { 13 H. P. engine. 3,200 feet of pipe. 192 HEATING AND VENTILATION 183 In usingthis method of computation, judgment must be employed, which can conic only from experience. The figures given are foraverage conditions of construction and exposure. Double=Duct System. The varying exposures of the rooms ofa school or other building similarly occupied, require that more heatshall be supplied to some than to others. Rooms that are on thesouth side of the building and exposed to the sun, may perhaps bekept perfectly comfortable with a supply of heat that will maintaina temperature of only 50 or GO degrees in rooms on the opposite sideof the buil
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