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Properties of air and water vapor mixtures
Determining the greenhouse heating load
Automatic controls for greenhouse heating
1 other sections not shown
absolute humidity air inﬁltration air movement air temperature amount of heat ASHVE automatic control bed coils bench beneﬁcial bleeds air boiler box coil Check valves coil ﬁg cold spots computed condensation crops cubic foot design temperature dew point feet ﬁgure 16 ﬁnned pipe ﬂow glass greenhouse heating greenhouse temperature growers hand valve Hart head end heat loss heat transfer heat transmission heating load heating system increased individual line inﬁltration loss inside temperature installed line of pipe Lord and Burnham mitre coil moisture number of pipes operation outdoor temperature overhead coils overhead piping perature pipe coil radiators pipes side plants pressure problem rate of air reduced relative humidity relay return coils roof shown in ﬁgure side coils side heat side of house side walls soil temperature temperature difference thermostat tion transmission loss trombone coil ture two.position valve unit heaters ventilation vertical stacking water vapor wind winter