Natural convection heat transfer from a tube bundle in the indirect water bath heaters is investigated. A computer-code is used for the solution of the governing equations of mass, momentum and energy transfer based on the SIMPLE-C algorithm. Simulations are carried out for the gas pressure station heater of Kermanshah city with various tube bundle arrangements. In order to validate the numeric...

natural convection heat transfer from a tube bundle in the indirect water bath heaters is investigated. a computer-code is used for the solution of the governing equations of mass, momentum and energy transfer based on the simple-c algorithm. simulations are carried out for the gas pressure station heater of kermanshah city with various tube bundle arrangements. in order to validate the numeric...

Heat exchangers are the critical components of refrigeration and liquefaction processes. Selection of appropriate operational conditions for cryogenic recuperative heat exchanger and expansion valve operating in Joule-Thomson cooling system results in improving the performance and efficiency. In the current study, a straightforward procedure is introduced to design an efficient Joule-Thomson co...

In this numerical study, the heat transfer performance of shell-and-tube exchangers (STHXs) has been compared for two different tube arrangements. STHX having 21 and 24 tubes arranged in inline staggered grid considered analysis. Shell-and-tube exchanger with arrangement observed to provide lesser thermal stratification as arrangement. Further, study variation mass flow rate shell-side fluid co...

The results of a comprehensive study on the charging and discharging latent heat storage systems (LHSS) are presented. Multi-tube shell-and-tube units with variable layouts tube bundles examined. Two arrangements—in-line staggered—are tested. A number tubes different positions in bundle investigated. Moreover, two pitch ratios studied. Three commercially available substances used as phase chang...

Density functional theory (DFT) calculations with dispersion corrections elucidated the key factors for determining the arrangement of π-conjugated oligomers inside a carbon nanotube. The current study considered methyl-terminated terfurans as guests inside a host tube; the results were compared with those obtained in previous studies for methyl-terminated terthiophenes inside a nanotube. DFT c...

heat exchangers are the critical components of refrigeration and liquefaction processes. selection of appropriate operational conditions for cryogenic recuperative heat exchanger and expansion valve operating in joule-thomson cooling system results in improving the performance and efficiency. in the current study, a straightforward procedure is introduced to design an efficient joule-thomson co...