The volume of a given mass of an ideal gas is directly proportional to its temperature on the absolute temperature scale if pressure and the amount of gas remain constant; that is, the volume of the gas increases or decreases by the same factor as its temperature. 16
temperature • At high temperatures (TR > 2), ideal gas behavior can be assumed. • The deviation is highest in the vicinity of the critical point. Example: Ideal Gas Determine the specific volume of R-134a at 1 MPa and 50°C, using (a) ideal gas equation (b) the generalized compressibility chart. Compare the values obtained with the 4.9 The correction factors for propane (density = 505 kg/m³ @ 15 °C) have been calculated and can be found in Table 2. 4.10 The C pl is then multiplied by the temperature-compensated net meter reading to provide a net "corrected to reference conditions of 15 °C and vapour pressure at 15 °C" reading. Example: What is the water vapor pressure at 32C Use the chart entry closest to the number you want. 32C is closer to 30 than to 35. So set up a proportionality and solve for X. __30C = __ 35C
Update 07/21/06: The rule of thumb for side arm burners to forge volume is: (1) 3/4" side arm burner for every 350 cu/in of interior forge space. These figures are for a forge that has been properly insulated, for example: two layers of 1"Durablanket with 8 lb. density 1260°C (2300°F) temperature grade rating for the forge lining and forge lining coated with Plistix 900 F. by Barchart - Tue Dec 29, 3:11PM CST . Feb Nymex natural gas (NGG21) on Tuesday closed up +0.118 (+5.07%). Feb nat-gas prices on Tuesday rebounded sharply from Monday's 3-month low on signs of strength in nat-gas demand.