Heating and Ventilating Buildings: A Manual for Heating Engineers and Architects

amount arranged atmosphere boiler building capacity cause cent circulation closed coal column computed connected considerable considered construction cubic feet described diameter difference difference of temperature direct discharge employed engine equal experiments exposed extent feet per second fire fittings floor flow flue force friction furnace given gives glass grate greater heat-units heater heating surface horizontal hot water hot-water hot-water heating hour inches increase indirect iron length less loss lower material means metal method move multiplied nearly obtained operation passing pipe pounds practice pressure prevent produce proportions radiating surface reduced shown in Fig shows side square feet square foot square inches steam steam-heating sufficient supply taken temperature tion tube units usually valve various velocity ventilation wall warm weight