The exact formulae for the true and mean specific heats of platinum between 0° and 1600°C

Critical Analysis of Heat—Capacity Data and Evaluation of Thermodynamic Properties of Ruthenium, Rhodium, Palladium, Iridium, and Platinum from 0 to 300K. A Survey of the Literature Data on Osmium.

“…..... foil sample that was used to fill it, and the hollow sphere filled with (3) the foil and with (4) a wire sample. The three sets of results obtained from the data are in good agreement (0.2 or 0.3 percent) with the earlier work of Jaeger and colleagues [40,41,46,47,48,37] and of White [101,102,103]. The data are within 0.3 percent of the selected values in the region of 300 K. Kendall, Orr, and Hultgren [51] reported four different series of relative enthalpy measurements between 298 and 1435 K, the platinum samples investigated being in the form of (1) a solid sphere, (2) a hollow sphere (sample vessel) of the same size made from the Vollmer and Kohlhaas [99] reported measurements between 300 and 1900 K on a sample of 99.9948 percent purity employing a' continuous heating method.…”

“…Rayne [82]; and by Berg [4]. [41,40,47,48,46]; and of Kendall, Orr, and Hultgren [51] were given the most weight in obtaining the selected values of heat capacity in the region of 300 K. Figures 8 and 9 show the deviations of the literature data from the selected values. The estimated limit of uncertainty of the selected values is ± 0.4 percent at 50 K, which decreases with increase in temperature to ± 0. gas [15,16] .... H~ and sg apply to the reference state of the solid at zero K and I atmosphere pressure.…”

The thermal character of a 1 m methanol pool fire

“…The time constant for heat transfer to a sphere [15] can be written as: where Re is the Reynolds number and Pr is the Prandtl number. The temperature-dependent gas properties for Re and Pr, are taken as those of air [18], and the temperature dependent emissivity and the thermophysical properties of platinum were taken from [16,19] which are listed in Appendix (A.2). ; Tsurr was assumed to be 300 K.…”

The structure of medium-scale pool fires

“…The specific heat of the bead is calculated from the formulae provided in Ref. [14]. The Nusselt number, Nu, is calculated using the Ranz-Marshall correlation [11]:…”

“…The total moles injected into the GC/MS, n inj , for calibration is determined from Eq. (14) using the pressure, P, temperature, T , and volume, V s , of the gas sample injected into the GC/MS. Pressure and temperature measurements are made using a digital pressure gauge (OMEGA P10R-001) and K-type thermocouple located at the GC/MS sample loop injection valve, respectively, sampling at 2 Hz for 50 s. The volume of the GC/MS sample loop is 2 mL.…”