Results 61 to 70 of about 176,755 (335)

Research on Heat Exchanger of Gas Hydrate Mud Cooling System

open access: yesZhileng xuebao, 2017
The heat exchanger of the gas hydrate mud cooling system is very critical to the exploitation of gas hydrate. Based on the occurrence characteristics of gas hydrate, the study focused on the effect of different kinds of heat exchanger to the original gas
Zhao Shuai   +5 more
doaj  

Investigating the performance optimization of an outdoor condenser–evaporator for an electric vehicle heat pump system

open access: yesEnergy Reports, 2021
To analyze the dual-use characteristics of outdoor microchannel heat exchangers in electric vehicle heat pump systems, numerical calculation models of the heat transfer and pressure drop under different states were analyzed and selected.
Ni Liu   +8 more
doaj  

Novel Biologically Active Glass Fiber Functionalized Using Magnesium Phosphate Cement Promotes Bone and Vascular Regeneration

open access: yesAdvanced Biology, EarlyView.
In this study, a new type of bioactive glass fiber ‐based composite magnesium phosphate bone cement is prepared and verified that its mechanical strength and biological properties. In addition, the cement may have played a biologically active role in the Notch and HIF signaling pathways.
Yuzheng Lu   +12 more
wiley   +1 more source

Design and Performance Analysis of a Supercritical Carbon Dioxide Heat Exchanger

open access: yesApplied Sciences, 2020
This paper presents a preliminary design and performance analysis of a supercritical CO2 (SCO2) heat exchanger for an SCO2 power generation system. The purpose of designing a SCO2 heat exchanger is to provide a high-temperature and high-pressure heat ...
Han Seo   +4 more
doaj   +1 more source

Improvement of heat exchanger efficiency by using hydraulic and thermal entrance regions [PDF]

open access: yesarXiv, 2018
This study investigates one of the possible approaches of improvement of heat exchangers efficiency. Literature review shows that most approaches of improvement are based on the heat transfer surface increasing and laminar-to-turbulent flow transition using different types of riffles forming and shaped inserts.
arxiv  

Modeling the Behavior of Frost Growth on Finned Tube Heat Exchanger [PDF]

open access: yesEngineering and Technology Journal, 2014
A quasi-steady finite-volume model was developed for modeling a plain-finround-tube heat exchanger under frosted conditions. In this study, the heat and mass transfer characteristics of heat exchangers during frost formation process are analyzed ...
Zainab Hasoun H.Naji
doaj   +1 more source

Multifunctional Design of Triply Periodic Minimal Surface Structures for Temporary Pediatric Fixation Devices

open access: yesAdvanced Engineering Materials, EarlyView.
A metallic implant's higher stiffness compared to the surrounding bone leads to stress shielding problems, causing bone density reduction and bone growth interference in pediatric patients. 3D‐printed triply periodic minimal surface structures present a promising engineering solution.
Ali Ebrahimzadeh Dehaghani   +4 more
wiley   +1 more source

An Experimental Study on the Effect of Shape and Location of Vortex Generators Ahead of a Heat Exchanger

open access: yesAl-Khawarizmi Engineering Journal, 2012
An experimental study is carried out on the effect of vortex generators (Circular and square) on the flow and heat transfer at variable locations at (X = 0.5, 1.5, 2.5 cm) ahead of a heat exchanger with Reynolds number ranging from 62000< Re < 125000 and
Wisam Abed Kattea
doaj   +2 more sources

Diagnosis of the Fouling Effects in a Shell and Tube Heat Exchanger using Artificial Neural Network

open access: yesChemical Engineering Transactions, 2018
In this paper, there presents an identification method of the fouling influence on the heat recovery in a heat exchanger. To evaluate the heat losses due to fouling there is proposed the method based on neural network approach. Because the correctness of
Przemyslaw Trzcinski, Mariusz Markowski
doaj   +1 more source

Numerical studies of an eccentric tube-in-tube helically coiled heat exchanger for IHEP-ADS helium purification system [PDF]

open access: yesarXiv, 2014
The tube-in-tube helically coiled (TTHC) heat exchanger is preferred in the purifier of IHEP-ADS helium purification system. The position of an internal tube is usually eccentric in a TTHC heat exchanger in practice, while most TTHC heat exchangers in the literature studied are concentric. In this paper, TTHC heat exchangers with different eccentricity
arxiv  

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