Showing 51 - 60 of 523
In this study, heat transfer and thermal performance of a periodically dimple-protrusion patterned surface have been investigated to enhance energy-efficiency in compact heat exchangers. The local heat transfer coefficients on the dimple/protrusion walls are derived using a transient TLC...
Persistent link: https://www.econbiz.de/10010807738
Spray cooling is an effective method for dissipating high heat fluxes in the field of electronics thermal control. In this study, experiments were performed with distilled water as a test liquid to study the spray cooling heat transfer in non-boiling regime. A Phase Doppler Anemometry (PDA) was...
Persistent link: https://www.econbiz.de/10010807807
The mathematical model of plate heat exchanger (PHE) is developed using decomposition of the plate on its main corrugated field, which cause major effect on heat transfer, and distribution zone, which influences mostly the hydraulic performance. Model is validated on experimental data for some...
Persistent link: https://www.econbiz.de/10010808110
In this paper, we analyze the MHD (magnetohydrodynamic) flow and heat transfer of a second grade non-Newtonian fluid in a channel with porous wall. HAM (Homotopy analysis method) is used to obtain analytical solutions of the governing system of nonlinear ordinary differential equations. The...
Persistent link: https://www.econbiz.de/10010808326
In this paper, a physical model is built to study the eutectic and progressive melting of salt solution in DSC (Differential Scanning Calorimetry) cells. The finite volume method is utilized to solve the heat transfer problem, and the general implicit source-based enthalpy method is employed to...
Persistent link: https://www.econbiz.de/10010808556
The purpose of the research is to verify the viability and the applicability of TPCT (two-phase closed thermosyphon) sucker Rod in cyclic steam stimulation for heavy oils. On the basis of the previous researches and the basic principles of TPCT, the laboratory experiment system was setup and the...
Persistent link: https://www.econbiz.de/10010808590
Most of the efforts to improve energy system configurations are directed towards the recovery of internal heat, which reduces the contribution of the external hot source and enhance system efficiency accordingly. This problem is strictly related to the synthesis of different components into...
Persistent link: https://www.econbiz.de/10010808666
In this paper, exergy transfer effectiveness is defined to describe the performance of heat exchangers operating above … transfer units number, the ratio of the heat capacity of cold fluids to that of hot fluids and flow patterns on exergy transfer … effectiveness of heat exchangers. Furthermore, the results of exergy transfer effectiveness with a finite pressure drop are compared …
Persistent link: https://www.econbiz.de/10010808678
This paper is concerned with heat transfer analysis and life prediction in the after shell section of a gas turbine combustion liner with internal cooling passage. The method in the present study is the process to design cooling systems which enhance the material lifetime as well as the cooling...
Persistent link: https://www.econbiz.de/10010808791
A novel two-layer nanofluid solar pond is introduced. A mathematical model that describes the thermal performance of the pond has been developed and solved. The upper layer of the pond is made of mineral oil and the lower layer is made of nanofluid. Nanofluid is known to be an excellent solar...
Persistent link: https://www.econbiz.de/10010809035