An experimental study of heat transfer through gases contained between two vertical coaxial cylindrical surfaces at different temperatures

Ganti, N.A.; Chen, S.H.P.; Saxena, Saurabh

doi:10.1016/0017-9310(73)90186-5

Cited by 9 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It may be pointed out that the maximum correction due to the end-effects is 1 per cent in vacuum and less than 0.8 per cent for the gas runs. The conclusion from these investigations that the heat losses at the ends are small for the geometry and experimental conditions employed in this work is in conformity with our direct heat transfer measurements [12]. Detailed measurements of temperature profiles for different gas pressures in the column of Jody [2] have indicated a weak dependence of temperature distribution on gas pressure.…”

Section: Methodssupporting

confidence: 79%

“…The maximum Rayleigh number for these runs is 1280 and it is sufficiently smaller than 4400, the critical Rayleigh number characterizing the confinement of the end-effect over a length of the wire at the very end which is approximately equal to the diameter of the tube [12]. The maximum value of the Reynolds number is 16 and consequently the flow may be regarded as laminar [13].…”

Section: Methodsmentioning

confidence: 98%

See 1 more Smart Citation

Thermal conductivity of argon in the temperature range 350 to 2500 K

Chen¹,

Saxena²

1975

Molecular Physics

Self Cite

View full text Add to dashboard Cite

The thermal conductivity of argon is determined in the temperature range 350-2500 K in a carefully designed conductivity column and is given by k(T)/(mW m -x K -x) = 5"465 + 0"04729(T/K) -0"1111 x IO-~(T/K) ~ + 0"1599x 10-S(T/K) a within an estimated uncertainty of about + 1"5 per cent. These values, which are derived from heat transfer measurements in the continuum range, are compared with conductivity values obtained from similar data taken in the temperature-jump regime. The k values are also compared with other available conductivity and viscosity data, and with the predictions based on kinetic theory in conjunction with intermolecular potentials, and the principle of corresponding states. These comparisons have led to many interesting conclusions concerning the quality of other experimental data and the appropriateness of different intermolecular potentials. The predictions based on corresponding states appear most reliable.

show abstract

Section: Methodssupporting

confidence: 79%

Section: Methodsmentioning

confidence: 98%

Thermal conductivity of argon in the temperature range 350 to 2500 K

Chen¹,

Saxena²

1975

Molecular Physics

Self Cite

View full text Add to dashboard Cite

show abstract

“…measured in each case and a typical set of temperature profiles is shown in figure 1 and these are also employed to apply the end correction as explained earlier [1]. The Rayleigh number for the present investigations is always less than 1260, and this ensures [4] the smallness of the end correction which is also somewhat evident from figure 1. The plots of the corrected electrical power propagated through the gas, Qa c, thus determined is shown in figure 2 as a function of gas pressure, P, for several arbitrary temperatures, Trt, of the hot wire.…”

Section: Methodsmentioning

confidence: 98%

Thermal conductivity of nitrogen in the temperature range 350–2500 K

Saxena

Chen

1975

Molecular Physics

Self Cite

View full text Add to dashboard Cite

The thermal conductivity of nitrogen is determined in a conductivity column instrument in the temperature range of 338 to 2518 K with an estimated uncertainty of about _+1"5 per cent. The experimental data points are correlated by a cubic polynomial in temperature, viz. k(T)/(mW m -1 K -1) = 12.18 + 0"05224(T/K) -0"6482 x 10-6(T/K) 2 -0"2765 x 10-9(T/K) z. These conductivity values determined from heat transfer data taken in the continuum regime are found to be in fair agreement with the values obtained from similar data referring to low pressure range.The present results are compared with the conductivity determinations of other workers and with the predictions of various theories developed for polyatomic gases. It is pointed out that a reliable calculation of thermal conductivity over an extended temperature range is impossible at the present time due to the absence of a large variety of experimental molecular data needed for such an effort. Average values of the vibrational energy diffusion coefficient, Dvib, are computed from the present k(T) data.

show abstract

Interface heat transfer and thermal accommodation coefficients: Heated tungsten wire in nitrogen environment

Chen

Saxena

1974

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

An experimental study of heat transfer through gases contained between two vertical coaxial cylindrical surfaces at different temperatures

Cited by 9 publications

References 7 publications

Thermal conductivity of argon in the temperature range 350 to 2500 K

Thermal conductivity of argon in the temperature range 350 to 2500 K

Thermal conductivity of nitrogen in the temperature range 350–2500 K

Interface heat transfer and thermal accommodation coefficients: Heated tungsten wire in nitrogen environment

Contact Info

Product

Resources

About