Barrel Heaters - Hasmak.com.tr

Reference DataQuick Estimates ofWattage RequirementsContinued* Read across in table from nearest amount ingallons of liquid to desired temperature risecolumn and note kilowatts to heat in one hour.For Heating Flowing Water:kW = GPM x Temperature Rise (°F) x 0.16ORkW = Liters/min. x Temperature Rise (°C) x 0.076For Heating Water in Tanks:Use equation or table.kW = Gallons x Temperature Rise (°F)375 x Heat-up Time (hrs)ORkW = Liters x Temperature Rise (°C)790 x Heat-up Time (hrs)Kilowatt-Hours to Heat Water*Amount of Liquid Temperature Rise °Fft 3 Gallons20° 40° 60° 80° 100° 120° 140°Kilowatts to Heat in One Hour0.66 5 0.3 0.5 0.8 1.1 1.3 1.6 1.91.3 10 0.5 1.1 1.6 2.1 2.7 3.2 3.72.0 13 0.8 1.6 2.4 3.2 4.0 4.8 5.62.7 20 1.1 2.2 3.2 4.3 5.3 6.4 7.53.3 25 1.3 2.7 4.0 5.3 6.7 8.0 9.34.0 30 1.6 3.2 4.8 6.4 8.0 9.6 12.05.3 40 2.1 4.0 6.4 8.5 11.0 13.0 15.06.7 50 2.7 5.4 8.0 10.7 13.0 16.0 19.08.0 60 3.3 6.4 9.6 12.8 16.0 19.0 22.09.4 70 3.7 7.5 11.2 15.0 19.0 22.0 26.010.7 80 4.3 8.5 13.0 17.0 21.0 26.0 30.012.0 90 5.0 10.0 14.5 19.0 24.0 29.0 34.013.4 100 5.5 11.0 16.0 21.0 27.0 32.0 37.016.7 125 7.0 13.0 20.0 27.0 33.0 40.0 47.020.0 150 8.0 16.0 24.0 32.0 40.0 48.0 56.023.4 175 9.0 18.0 28.0 37.0 47.0 56.0 65.026.7 200 11.0 21.0 32.0 43.0 53.0 64.0 75.033.7 250 13.0 27.0 40.0 53.0 67.0 80.0 93.040.0 300 16.0 32.0 47.0 64.0 80.0 96.0 112.053.4 400 21.0 43.0 64.0 85.0 107.0 128.0 149.066.8 500 27.0 53.0 80.0 107.0 133.0 160.0 187.01 cu. ft. = 7.49 gallonsKilowatt-Hours to Superheat Steam1. Plot points on lines P, Q and S.P represents the inlet temperature(and saturation pressure) of thesystem.Q represents the liquid content ofthe water vapor.S indicates the outlet temperatureminus the saturated temperature.W indicates the heat content of thewater vapor.2. Draw a straight line from P throughQ to W. Read W 1.3. Draw a straight line from P throughS to W. Read W 2.4. Required watts = Weight (lbs.) ofsteam/hour x (W 2-W 1).Watt density is critical. Review temperatureand velocity prior to heaterselection.Reference is 80 percent quality at20 psig.Saturated Temperature—°F450400350300250210P4003001501005025100Gauge Pressure—lbs/in 2Q859095100100200300400500600700800Quality—Percent R.h.Degrees of Superheat—°F9000102030405060708090100110120130140150160170180190SW200Heat Content—Watt–hour/lb402