Various Ways to Connect the Refrigerator Cold Box to the Object to Be Cooled

2020 ◽  
pp. 185-195
Author(s):  
Guy Gistau Baguer
Keyword(s):  
Cold Box

Design and Performance Assessment of Cold Compressor for a typical Cold Box of large Tokamak Machines

Cryogenics ◽  
2021 ◽  
pp. 103331
Author(s):  
P. Patel ◽  
H. Vaghela ◽  
S. Muralidhara ◽  
J. Das ◽  
H.-S. Chang
Keyword(s):  
Performance Assessment ◽  
And Performance ◽  
Cold Box

STRENGTHENING FEATURES AND AGING KINETICS OF HIGH-STRENGTH CAST ALUMINUM ALLOY AL4MS BASED ON Al–Si–Cu–Mg SYSTEM

2021 ◽  
pp. 24-34
Author(s):  
E.N. Kablov ◽  
◽  
E.V. Belov ◽  
A.V. Trapeznikov ◽  
A.A. Leonov ◽  
...  
Keyword(s):  
High Strength ◽  
Cast Aluminum Alloy ◽  
High Plasticity ◽  
Cast Aluminum ◽  
Second Stage ◽  
Low Temperature Aging ◽  
Aging Kinetics ◽  
Kinetics Of ◽  
Cold Box ◽  
Temperature Aging

Based on the conducted research, it has been found that quenching with hot isostatic pressure and step-by-step aging with consistently increasing temperatures of low-temperature aging (first stage) and high-temperature aging (second stage) provides high tensile strength for AL4MS copper silumin during cold box casting, increases the flow stress by 10%, and maintains high plasticity compared to the level of properties after single-stage aging.

Experimental Study of Multiphase Flow in Cold Box Core Process

2000 ◽  
Author(s):  
Sayavur I. Bakhtiyarov ◽  
Ruel A. Overfelt
Keyword(s):  
Experimental Study ◽  
Multiphase Flow ◽  
Measurement System ◽  
Pressure Measurement ◽  
Test Specimen ◽  
Filling Process ◽  
Cold Box ◽  
Pressure Measurement System ◽  
Sand Deposition

Abstract The results of experimental study of pressure variations inside core box during resin bonded sand filling process are reported. The test core specimens were produced using Laempe® Test Specimen Curing Machine L 1. A special pressure measurement system was designed and built with safety and portability requirements of the foundry environment. Special experiments were conducted to establish the effect of sand deposition on vent permeability.

scholarly journals Engineering Economic Analysis for Feed Gas Cooler (Cold box): a Case of a Gas Processing Complex in Malaysia

2014 ◽  
Vol 13 ◽  
pp. 05009
Author(s):  
Zulkipli Ghazali ◽  
M Amin A Majid ◽  
Teh Choon Chi
Keyword(s):  
Economic Analysis ◽  
Gas Processing ◽  
Cold Box

Performance Improvement of a PCM Cold Box by Two Bilayers Configuration

2021 ◽  
Author(s):  
Ankit Anand ◽  
Abhishek Purandare ◽  
Srinivas Vanapalli
Keyword(s):  
Performance Improvement ◽  
Cold Box

scholarly journals Design of an advanced hot box-cold box with full climatic control to test heat, air and moisture transport through real scale building elements

2020 ◽  
Vol 172 ◽  
pp. 19008
Author(s):  
David Daems ◽  
Antoine Tilmans ◽  
Timo De Mets ◽  
Xavier Loncour
Keyword(s):  
Climatic Conditions ◽  
Test Facility ◽  
Solar Simulator ◽  
Climatic Control ◽  
Critical Issues ◽  
Test Elements ◽  
Cold Chamber ◽  
Real Scale ◽  
Cold Box ◽  
Building Elements

A versatile hot box-cold box test facility called HAMSTER enables to evaluate the energy and hygrothermal performance of up to 3m high, 3m wide and 3.6m deep building test elements including walls, flat or pitched roofs and floors. This equipment allows for the precise measurement of thermal performance according to standards. It also allows for the study of heat, air and moisture phenomena taking place in building elements under realistic climatic conditions including the effects of rain, sun or wind. Interior and exterior climates are simulated in, respectively, the hot and cold chambers by controlling the temperature, relative humidity, pressure difference between both chambers, infra-red or solar simulator heating and water spraying in the cold chamber. Critical issues that have been solved during the design and construction phases in order to reach both the required performances and the versatility of the test facility are discussed.

Numerical Simulations and Experimental Study of Hot Core Distortion Phenomenon in Aluminum Casting

Volume 3 ◽  
2004 ◽  
Author(s):  
Sayavur Bakhtiyarov ◽  
Ruel A. Overfelt ◽  
Amit Suryawanshi ◽  
Johnathon Capps
Keyword(s):  
High Temperature ◽  
Numerical Simulations ◽  
Buoyancy Force ◽  
Metal Flow ◽  
Tensile Tests ◽  
Temperature Limit ◽  
Silica Sand ◽  
Sand Core ◽  
Aluminum Castings ◽  
Cold Box

This paper presents the results of experimental and numerical studies of hot distortion phenomenon in the phenolic urethane cold box systems. Dual Pushrod Dilatometer has been used to measure a thermal expansion/contraction of phenolic urethane cold box sand core specimens at temperature range from 25° C to 800° C. The high temperature tensile tests showed that the tensile strength of the phenolic urethane cold box silica sand cores is significantly affected by the bench life, temperature and binders level. High temperature hot distortion furnace tests on cylindrical cores showed that some aluminum coatings increase the temperature limit when distortion starts, but can’t prevent it. The hot distortion test aluminum castings showed that regardless of the application of coating, the type of coating, and anti-veining additives, all cores (silica sand) with density less than the density of the molten metal (aluminum alloy) were significantly distorted. Numerical simulations of the liquid metal flow around the cylindrical sand core and analysis of dynamic forces acting on the core during fill process showed that a buoyancy force is the major contributor to the hot distortion. It is concluded that the one of the solutions in preventing the hot distortion of sand cores is increasing their weigh, which will balance the buoyancy force and will bring the resultant force to the minimum. The hot distortion test castings using zircon sand cores (both coated and non-coated) with density almost equal to the density of the molten aluminum proved our predictions, and hot distortion has been prevented.

Elimination of casting defects induced by cold box cores

2020 ◽  
Author(s):  
N. Udayan ◽  
M.V. Srinivasan ◽  
R. Vaira Vignesh ◽  
M. Govindaraju
Keyword(s):  
Casting Defects ◽  
Cold Box
Sign in / Sign up

Export Citation Format

Share Document