Results 21 to 30 of about 176,755 (335)
Advances and Outlooks of Heat Transfer Enhancement by Longitudinal Vortex Generators [PDF]
In the last several decades, heat transfer enhancements using extended surface (fins) has received considerable attentions. A new heat transfer enhancement technique, longitudinal vortex generators (LVG), has received significant attention since the 1990s.
arxiv +1 more source
Research on Heat Transfer Characteristics of Plate Evaporators for Cold Storage
A new type of plate evaporator suitable for cold storage refrigeration systems was designed. A mathematical model of the plate evaporator was established using Fluent14.0 software, and the effects of refrigerant mass flow rate and air velocity on the ...
Xun Xu, Zhaokuo Yuan
doaj +1 more source
Expanded microchannel heat exchanger: design, fabrication and preliminary experimental test [PDF]
This paper first reviews non-traditional heat exchanger geometry, laser welding, practical issues with microchannel heat exchangers, and high effectiveness heat exchangers. Existing microchannel heat exchangers have low material costs, but high manufacturing costs.
arxiv +1 more source
The exchange fluctuation theorem in quantum mechanics [PDF]
We study the heat transfer between two finite quantum systems initially at different temperatures. We find that a recently proposed fluctuation theorem for heat exchange, namely the exchange fluctuation theorem [C. Jarzynski and D. K. Wojcik, Phys. Rev. Lett.
arxiv +1 more source
DESIGN OF SHELL AND TUBE TYPE HEAT EXCHANGER FOR NANOFIBRIL CELLULOSE PRODUCTION PROCESS
Heat exchanger plays an important role in industry. In industrial applications, the type of heat exchanger that is often found is the shell and tube type heat exchanger.
Hanif Nur Purnamasari+2 more
doaj +1 more source
Evaluation of the using Al2O3/EG and TiO2/EG nanofluids as coolants in the double-tube heat exchanger [PDF]
: In this study, Al2O3/EG and TiO2/EG nanofluids as coolants have been used in the double-tube heat exchanger. The hot solvent inlet heat exchanger must be cooled down with a specified amount.
Navid Bozorgan
doaj
Analysis of ground massif temperatures with horizontal heat exchanger
The paper is aimed at specification of ground massif temperatures in the horizontal heat exchanger area in both the heating season and during heat exchanger stagnation.
M. Šeďová+2 more
doaj +1 more source
Fluctuation Relations for Heat Exchange in the Generalized Gibbs Ensemble [PDF]
In this work, we investigate the heat exchange between two quantum systems whose initial equilibrium states are described by the generalized Gibbs ensemble. First, we generalize the fluctuation relations for heat exchange discovered by Jarzynski and W\'ojcik to quantum systems prepared in the equilibrium states described by the generalized Gibbs ...
arxiv +1 more source
The NlpC_P60 superfamily of peptidases is recognised by its key role in bacterial cell wall homeostasis. Recently, studies have also described the involvement of NlpC_P60‐like enzymes in bacterial competitive mechanisms and pathogenesis across several lineages.
Catharina dos Santos Silva+1 more
wiley +1 more source
In this study, a novel modified webbed tube heat exchanger was introduced and numerically investigated, to enhance the thermal performance of phase change material (PCM) thermal energy storage (TES) system.
Ahmed H.N. Al-Mudhafar+2 more
doaj