Results 11 to 20 of about 176,755 (335)
Advanced Engineering Materials, EarlyView., 2023 A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal +3 more
wiley +1 more source
Energy analysis of heat exchanger in a heat exchanger network
Thermal Science, 2018 For many years now, heat exchanger optimization has been a field of research for a lot of scientists. Aims of optimization are different, having in mind heat exchanger networks with different temperatures of certain streams. In this paper mathematical model in dimensionless form is developed, describing operation of one heat exchanger in a heat ...
Martina Rauch, Antun Galović
openaire +4 more sources
Plate Fin Heat Exchanger Model with Axial Conduction and Variable Properties [PDF]
AIP Conf.Proc. 1434 (2011) 615-622, 2012 Future superconducting radio frequency (SRF) cavities, as part of Project X at Fermilab, will be cooled to superfluid helium temperatures by a cryogenic distribution system supplying cold supercritical helium. To reduce vapor fraction during the final Joule-Thomson (J-T) expansion into the superfluid helium cooling bath, counter-flow, plate-fin heat ...
arxiv +1 more source
Zhileng xuebao, 2021 A theoretical analysis on the air-side flow characteristics of cylindrical fin-and-tube heat exchanger was carried out. Based on the existing heat transfer model, a correlation formula of lumped parameters, which can reflect the structural ...
Huang Chu, Gu Bo, Tian Zhen, Sha Yuxiong
doaj
Analysis on Optimization and Model Selection of the Heat Transmission Performance of Heat Exchanger
Chemical Engineering Transactions, 2017 In order to better optimize and develop heat exchanger technology, aimed at improved design of heat exchanger in the industrial loop reactor, this paper researches the heat transmission performance of heat exchanger based on CFD simulation and its ...
Yecong He, Tengjin Huang, Min Tan
doaj +1 more source
Nanoporous Structure of Sintered Metal Powder Heat Exchanger in Dilution Refrigeration: A Numerical Study [PDF]
arXiv, 2022 We use LAMMPS to randomly pack hard spheres to simulate the heat exchanger, where the hard spheres represent sintered metal particles in the heat exchanger. We simulated the heat exchanger under different sphere radii and different packing fractions of the metal particle and researched pore space.
arxiv
Finite Element Analysis of Combined Energy Piles with Long and Short Heat Exchanger Tubes
Applied Sciences, 2023 To improve the heat exchange effect of energy piles in coastal areas, a new energy pile with a combination of long and short heat exchanger tubes is proposed.
Shuaijiong Chen +5 more
doaj +1 more source
Nitrogen Precooling Heat Exchanger replacement and control system upgrade in Superfluid Cryoplant at CMTF [PDF]
arXiv, 2023 Liquid Nitrogen precooling is used in most Cryoplants to achieve cooldown to 80 K temperature range. In one such system at Fermilab's CMTF Superfluid Cryoplant, where the Helium supply directly exchanges heat with liquid Nitrogen, freezing of Nitrogen occurred inside the heat exchanger due to heat exchanger imbalance during a Cryoplant trip.
arxiv
Screening refrigerant for a new enhanced ejector heat exchanger used in district heating system based on industrial waste heat [PDF]
E3S Web of Conferences, 2021 Performance of the new enhanced ejector heat exchanger is the key to improving performance of the district heating system based on industrial waste heat, and it is significantly affected by thermo-physical property of refrigerant.
Sun Fangtian, Hao Baoru, Chen Xu
doaj +1 more source
Cleaning Schedule Operations in Heat Exchanger Networks
MATEC Web of Conferences, 2018 Heat exchanger networks have been known to be the essential parts in the chemical industries. Unfortunately, since the performance of heat exchanger can be decreasing in transferring the heat from hot stream into cold stream due to fouling, then cleaning
Huda Hairul +2 more
doaj +1 more source