Results 31 to 40 of about 3,083 (222)

An oriented-design simplified model for the efficiency of a flat plate solar air collector [PDF]

open access: yes, 2010
In systems design, suitably adapted physical models are required. Different modelling approaches for a solar air collector were studied in this paper. First, a classical model was produced, based on a linearization of the conservation of energy equations.
JANNOT, Yves   +2 more
core   +3 more sources

Design, construction and evaluation of solar flat-plate collector simulator based on the thermohydraulic coefficient [PDF]

open access: yesJournal of Agricultural Machinery, 2017
Introduction Increasing the area of absorber plate between the flowed air through the duct can be accomplished by corrugating the absorber plate or by using the artificial roughness underside of the absorber plate as the commercial methods for enhancing ...
H Rahmati Aidinlou, A. M Nikbakht
doaj   +1 more source

Experimental Thermohydraulic Assessment of Novel Curved Ribs for Heat Exchanger Tubes: A Machine Learning Approach

open access: yesAerospace, 2023
Heat transfer enhancement using curved ribs of different cross sections, viz., square, rectangular, triangular, and circular, is a crucial study for designing heat-exchanging devices for various applications, and their thermohydraulic performance ...
Prashant Deshmukh   +4 more
doaj   +1 more source

The heat transfer and entropy generation of fin and inclined flat tube heat exchanger

open access: yesCase Studies in Thermal Engineering
The present work determines the appropriate inclination angles for each flat tube aspect ratio to increase the thermohydraulic performance without extending the heat exchange area.
Luan Nguyen Thanh   +2 more
doaj   +1 more source

Operating at 1.8 K: the technology of superfluid helium [PDF]

open access: yes, 1996
The technical properties of helium II ("superfluid" helium) are presented from the user point of view. Its applications to the cooling of superconducting devices, particularly in accelerators and colliders are discussed in terms of heat transfer ...
Lebrun, P
core   +1 more source

Experimental Investigation of Thermohydraulic Performance of a Rectangular Solar Air Heater Duct Equipped with V-Shaped Perforated Blocks

open access: yesAdvances in Mechanical Engineering, 2014
This paper presents the thermohydraulic performance of rectangular solar air heater duct equipped with V-shaped rectangular perforated blocks attached to the heated surface.
Tabish Alam, R. P. Saini, J. S. Saini
doaj   +1 more source

Investigating thermal performance of combined use of SiO2-water nanofluid and newly designed conical wire inserts

open access: yesCase Studies in Thermal Engineering, 2022
Background: The combined use of augmentation methods plays a significant role to enhance the thermohydraulic performance of thermal systems. This experimental study explores the thermohydraulic performance of a heat exchanger tube with the combined use ...
Fatma Oflaz   +2 more
doaj   +1 more source

Effects of Cooling Fluid Flow Rate on the Critical Heat Flux and Flow Stability in the Plate Fuel Type 2 MW TRIGA Reactor [PDF]

open access: yes, 2017
The conversion program of the 2 MW TRIGA reactor in Bandung consisted of the replacement of cylindrical fuel (produced by General Atomic) with plate fuel (produced by BATAN). The replacement led into the change of core cooling process from upward natural
Rahardjo, H. P. (H), Wardhani, V. I. (V)
core   +3 more sources

Heat transfer characterization of a new collector design featuring ribs, petals, and helical twisted tapes: Experimental study

open access: yesCase Studies in Thermal Engineering
The limited thermal efficiency of collectors in photovoltaic thermal systems continues to pose a major hurdle. This study tackles the issue by developing an innovative collector featuring a rib and petal arrangement, combined with a helical twisted tape ...
Banw Omer Ahmed   +5 more
doaj   +1 more source

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