Results 61 to 70 of about 11,306,266 (196)

The Effect of Heat Transfer on Turbine Performance

open access: yes, 2020
Despite the blades downstream of the combustor being cooled in most large gas turbines, the effect this cooling has on their performance is still unclear. Fundamental questions, such as how turbine efficiency should be defined and which flow features reduce performance, remain unanswered. This thesis answers these questions and addresses the problem of
openaire   +2 more sources

Survey and evaluation of techniques to augment convective heat transfer [PDF]

open access: yes, 1965
This report presents a survey and evaluation of the numerous techniques which have been shown to augment convective heat transfer. These techniques are: surface promoters, including roughness and treatment; displaced promoters, such as flow disturbers ...
Morton, Harmon Lindsay., Bergles A. E.
core  

A Review on Heat Transfer Enhancement in Shell-and-tube Heat Exchanger of Compression Type Refrigeration and Air Conditioning Unit

open access: yesZhileng xuebao, 2012
Heat exchangers including condenser and evaporator are important equipments in the compression type refrigeration and air conditioning units, and their heat transfer coefficients have a direct effect on the efficiency and cost of the units.
Zhang Zhengguo   +4 more
doaj  

Post critical heat transfer to flowing liquid in a vertical tube [PDF]

open access: yes, 1974
Sponsored by National Science Foundation Contract no. NSF GK-17745, D.S.R.
Plummer, David N.
core  

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals [PDF]

open access: yes, 2011
The effects of metal foams on heat transfer enhancement in Phase Change Materials (PCMs) are investigated. The numerical investigation is based on the two-equation non-equilibrium heat transfer model, in which the coupled heat conduction and natural ...
Zhao, Changying   +5 more
core   +1 more source

Heat transfer processes in parallel-plate heat exchangers of thermoacoustic devices - Numerical and experimental approaches [PDF]

open access: yes, 2012
This paper addresses the issues of heat transfer in oscillatory flow conditions, which are typically found in thermoacoustic devices. The analysis presented concerns processes taking place in the individual "channels" of the parallel-plate heat ...
Piccolo, A   +3 more
core   +1 more source

Effect of Actual Gas Turbine Operating Conditions on Mist/Steam Cooling Performance in a Ribbed Passage

open access: yesEnergies, 2019
This study numerically examines the effect of actual gas turbine operating conditions on heat transfer characteristics in a ribbed passage with mist/steam cooling.
Jianying Gong   +4 more
doaj   +1 more source

Cooling of high-power-density computer components [PDF]

open access: yes, 1968
This report summarizes work carried out during the first two years of a research program sponsored by IBM Corporation. This study has elucidated a number of the heat-transfer characteristics of several fluorochemicals which have potential application as ...
Bakhru, N.   +2 more
core  

Cooling and heating season performance of an open counterflow heat-source tower heat pump system in high-humidity climates: An experimental and numerical study.

open access: yesPLoS ONE
The cooling and heating season performance of an open counterflow heat-source tower heat pump (HTHP) system in high-humidity climates is investigated through an integrated experimental and numerical study, focusing on its year-round operation under ...
Xinhao Liu   +4 more
doaj   +1 more source

Forced-convection condensation inside tubes [PDF]

open access: yes, 1971
High vapor velocity condensation inside a tube was studied analytically. The von Karman universal velocity distribution was applied to the condensate flow, pressure drops were calculated using the Lockhart- Martinelli method, and heat transfer ...
Baron, Anton G.   +2 more
core  

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