One substance gives up its heat (or cold) by convection to rotating bodies. The other substance concerned in the heat transfer flows against these bodies, which steadily attain maximum temp. on every surface part, by convection and thermal flow.GRANTZ,SIEGFRIED,DIPL.-ING.DR.-ING.DR....
Experimental data were obtained for the heat transfer coefficient between electrically-heated horizontal tube bundles and square fluidised beds of silica sand and alumina as a function of air fluidising velocity. Heat transfer data for a bundle of tubes are compared with a single tube under otherwise...
We have just derived a useful equation for the heat flux between two black, diffuse surfaces q1 − 2 = A1F1 − 2(Eb1 − Eb2). In analogy to Ohm's law, this can be rewritten in the form of a resistance to heat transfer as q1 − 2 = (Eb 1 − Eb2)/Rspatial where R...
Frontiers in Heat and Mass Transfer is a free-access and peer-reviewed online journal that provides a central vehicle for the exchange of basic ideas in heat and mass transfer between researchers and engineers around the globe. It disseminates informatio
Frontiers in Heat and Mass Transfer is a free-access and peer-reviewed online journal that provides a central vehicle for the exchange of basic ideas in heat and mass transfer between researchers and engineers around the globe. It disseminates informatio
Heat exchangers are devices that transfer thermal energy between two or more fluids, usually separated by solid walls to avoid mixing. Heat exchangers are widely used industrially and domestically, and their basic analysis is covered in textbooks of heat transfer courses [16,17]. However, textbooks...
is excellent. A maximum radiation transfer enhancement over the blackbody limit by a factor of 8.4 was measured for a gap size of 150 nm and a temperature difference of 115.6 K. This constitutes the largest value recorded between two macroscale planar surfaces at non-cryogenic temperatures...
Even if the pyrotechnic substances are air-tight sealed, their exposure to an external environment is simply inevitable prior to such sealing process15. In addition, the seals on energetic materials can sometimes be damaged during the long-term storage. Therefore, it is a concerning factor whether...
If two substances have approximately the same vapour pressure, then the one with the smaller molar volume is retained the longer. For example on squalane, methylcyclohexane has a larger retention time than heptane, although both have almost the same boiling point (methylcyclohexane b.p. 100.9 °C...
These early designs have shown that flue gas condensation combined with the removal of harmful substances can be effective for all types of boilers and fuels burned. The profitability of modernization, involving the condensation of flue gas, increases with the increase in fuel costs and the inclusio...