Results 21 to 30 of about 63,706 (311)

A derivative method for minimising total cost in heat exchanger networks through optimal area allocation

open access: yes, 2013
This paper presents a novel Cost Derivative Method (CDM) for finding the optimal area allocation for a defined Heat Exchanger Network (HEN) structure and stream data, without any stream splits to achieve minimum total cost. Using the Pinch Design Method (
Walmsley, Michael R.W.   +4 more
core   +1 more source

Assessing the use of PEC and jf methods for strengthening the evaluation of new heat exchangers

open access: yesHeliyon
The new type of heat exchanger uses the micro heat pipe as the main heat transfer material. Compared with the traditional heat exchanger of the same kind, the performance of the new type of heat exchanger has significantly improved.
Jingang Yang, Zitong Feng
doaj   +1 more source

R32 Partial Condensation Inside A Brazed Plate Heat Exchanger

open access: yes, 2012
It is well known that when a superheated gas reaches a cold surface, the condensation starts immediately only if the wall temperature is lower than the dew temperature of the refrigerant; in this case, the heat transfer phenomenon can be also affected by
Mancin, Simone   +2 more
core   +1 more source

DESIGN OF SHELL AND TUBE TYPE HEAT EXCHANGER FOR NANOFIBRIL CELLULOSE PRODUCTION PROCESS

open access: yesInternational Journal of Research and Applied Technology, 2021
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

Experimental and analytical performance investigation of air to air two phase closed thermosyphon based heat exchangers [PDF]

open access: yes, 2014
In recent years, the use of wickless heat pipes (thermosyphons) in heat exchangers has been on the rise, particularly in gas to gas heat recovery applications due to their reliability and the level of contingency they offer compared to conventional heat ...
Sayegh, MA   +4 more
core   +1 more source

Review on Research Status and Prospects of Two-phase Flow Distribution in Microchannel Heat Exchanger

open access: yesZhileng xuebao, 2021
The non-uniform distribution of two-phase flow usually happens in a microchannel heat exchanger, which significantly reduces the performance of the microchannel heat exchanger.
Xiong Tong   +3 more
doaj   +2 more sources

INTENSIFICATIONS OF HEAT EXCHANGE PROCESSES IN PIPE HEAT EXCHANGERS [PDF]

open access: yesUniversum:Technical sciences, 2021
Abdugaffor Khurmamatov   +2 more
openaire   +1 more source

HEAT EXCHANGE AND ENDOTHERMY IN PROTODONATA [PDF]

open access: yesEvolution, 1982
Since the thought-provoking papers by Ostrom (1969) and Bakker (1971) the question has been raised repeatedly of whether dinosaurs were conventional poikilothermic or heliothermic reptiles, were "inertial" homeotherms (Spotila et al., 1973; McNab, 1978) by virtue of their enormous size, or were, rather, endotherms with metabolic rates comparable to ...
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Fouling of a double pipe heat exchanger [PDF]

open access: yes, 2004
Every single heat exchanger in operation in modern industries is exposed to fouling to a greater or lesser extent depending on the surface temperature, surface condition, material of construction, fluid velocity, flow geometry and fluid composition.
Llinares Fontdevila, Antonio
core  

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