Transpirational Performance of Oriented Porous SiC Transpiration Cooling Materials

The application and the transpirational behavior of oriented porous SiC as transpiration cooling materials in a simulating test were studied. The test sample was shaped by freeze-casting process and reaction sintered. The testing device was composed by an electric arc combustor and a hydrogen coolant providing system. It was found that the permeability, the amount of coolant required and the uniformity of coolant infiltration were all effected by the microstructure of porous SiC, which furthermore influced the cooling efficiency of the testing system. In this test, the inner face temperature of the combustion chamber was maintained less than 400K throughout the thermal testing period contrasting with the fire temperature up to 3600K by the utilization of oriented porous SiC transpiration cooling materials.

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Properties and Application of Oriented Porous SiC as Transpiration Cooling Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.1109 ◽

2007 ◽

Vol 336-338 ◽

pp. 1109-1112 ◽

Cited By ~ 1

Author(s):

Jie Tang ◽

Yu Feng Chen ◽

Ji Guo Sun ◽

Hua Wang ◽

Hai Lin Liu ◽

...

Keyword(s):

Pore Structure ◽

Pore Size ◽

Cooling System ◽

Casting Process ◽

Solid Loading ◽

Transpiration Cooling ◽

Rocket Engines ◽

Intrinsic Permeability ◽

Sic Ceramics ◽

Porous Sic

This paper describes the fabrication of porous reaction-bonded SiC ceramics with radial directed pores and the application of these materials to transpiration cooling system of rocket engines. A special mold is designed for freeze-casting process to prepare SiC cylinders with radial directed pores. Green bodies with well-oriented pore structure are obtained from slurry with solid loading up to 47vol%. The pore size is in the level of several tens micron. Green bodies with various porosities are infiltrated with different amount of liquid Si. The intrinsic permeability of each sample is measured with air as flowing media. It is concluded that permeability has relationship with not only the porosity but also the pore structure of samples.

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A heat transfer analysis from a porous plate with transpiration cooling

Thermal Science ◽

10.2298/tsci180326135k ◽

2019 ◽

Vol 23 (5 Part B) ◽

pp. 3025-3034 ◽

Cited By ~ 1

Author(s):

Mustafa Kilic

Keyword(s):

Heat Transfer ◽

Reynolds Number ◽

Porous Plate ◽

Particle Diameter ◽

Heat Transfer Analysis ◽

Transpiration Cooling ◽

Cooling Efficiency ◽

Cooling Effectiveness ◽

Cooling Effects ◽

Air Channel

Present study is focused on improving heat transfer from a porous plate by cooling of air with transpiration cooling. Effects of Reynolds number of the air channel flow and particle diameter on cooling effectiveness of porous plate and efficiency of system were investigated experimentally. It was observed that increasing Reynolds number of 15.2% causes a decrease of 6.9% on cooling efficiency of the system and a decrease of 8.6% on cooling effectiveness of porous plate. Decreasing particle diameter causes a significant decrease on surface temperature and an increase on cooling effectiveness of porous plate. Difference of cooling effectiveness of porous plate from dp = 40-200 ?m is 12%. Verification of this study was also shown by comparing experimental results of this study with literature.

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A non-contact thermal testing system for ultra-thin vapor chamber

Review of Scientific Instruments ◽

10.1063/5.0070768 ◽

2021 ◽

Vol 92 (12) ◽

pp. 124902

Author(s):

Xinyue Jiang ◽

Anqi Chen ◽

Fan Jiang ◽

Wei Guo ◽

You Lv ◽

...

Keyword(s):

Thermal Testing ◽

Testing System ◽

Vapor Chamber

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Properties and Application of Oriented Porous SiC as Transpiration Cooling Materials

Key Engineering Materials - High-Performance Ceramics IV ◽

10.4028/0-87849-410-3.1109 ◽

2007 ◽

pp. 1109-1112 ◽

Cited By ~ 2

Author(s):

Jie Tang ◽

Yu Feng Chen ◽

Ji Guo Sun ◽

Hua Wang ◽

Hai Lin Liu ◽

...

Keyword(s):

Transpiration Cooling ◽

Porous Sic

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Collection Mode Optimization of Casting Dust Based on TRIZ

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.97-101.2695 ◽

2010 ◽

Vol 97-101 ◽

pp. 2695-2698 ◽

Cited By ~ 6

Author(s):

Fan Jiang ◽

Wei Ping Chen ◽

Yi Jun Wang ◽

Xiao Chu Liu

Keyword(s):

Casting Process ◽

Electric Arc Furnace ◽

Electric Arc ◽

Arc Furnace ◽

Dust Collection ◽

Electric Arc Furnace Dust ◽

Curve Type ◽

Standard Solution ◽

Selection Of

The massive dust is produced in the casting process, need to control. This paper takes electric arc furnace dust collection way as an example, where is in Guangdong Shaoguan Foundry and Forging Group Co., Ltd., establishes the conflict matrix about selection of the dust collection way, uses the TRIZ theory to solve, and obtains the standard solution, the results should provide the reference for collection way design of the electric arc furnace dust. The structure of half airtight cover is optimized by used of CFD, and the curve type is suitable shape to collect the dust.

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Transpirational Performance of Oriented Porous SiC Transpiration Cooling Materials

High-Performance Ceramics V - Key Engineering Materials ◽

10.4028/0-87849-473-1.837 ◽

2008 ◽

pp. 837-839

Author(s):

Jie Tang ◽

Yu Feng Chen ◽

Ji Guo Sun ◽

Hua Wang ◽

Hai Lin Liu

Keyword(s):

Transpiration Cooling ◽

Porous Sic

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The Design of Screw-Drive Mechanism for Testing Device

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.271-272.1206 ◽

2012 ◽

Vol 271-272 ◽

pp. 1206-1210

Author(s):

Ying Jie Tan ◽

Chang Ming Zhang

Keyword(s):

Test Sample ◽

Testing Device ◽

Test Device ◽

Main Structure ◽

Drive Mechanism ◽

Screw Drive ◽

Actual Production ◽

Pressure Test

The main structure of bearing frame for pressure test device and it’s functions are described in this paper. For the pressure test device with float collar and float shoe, the screw transmits movement with standing pressuring load. According to the needs of actual production and the requirements of test sample pressuring, this paper designed a drive mechanism for screw rod, calculated the stress and checked the correlated stiffness. The result shows that it is reasonable, safe and reliable for screw-drive mechanism, depending on the operation behavior of float collar and float shoe pressure test device.

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Miniature Autoclave and Double Bellows Loading Device for Material Testing in Future Reactor Concept Conditions—Case Supercritical Water

Journal of Nuclear Engineering and Radiation Science ◽

10.1115/1.4037897 ◽

2017 ◽

Vol 4 (1) ◽

Cited By ~ 1

Author(s):

Sami Penttilä ◽

Pekka Moilanen ◽

Wade Karlsen ◽

Aki Toivonen

Keyword(s):

Supercritical Water ◽

Deformation Behavior ◽

Material Testing ◽

Light Water Reactor ◽

Harsh Environments ◽

Testing System ◽

Testing Device ◽

Loading Device ◽

Temperature And Pressure

The presented work consists of a test setup study of a new pneumatic material testing device based on double bellows (DBs) loading device and with miniature autoclaves enabling applications at temperature and pressure up to 650 °C and 35 MPa, respectively. It has been demonstrated that it is technically feasible to carry out well defined and controlled material testing in the supercritical water (SCW) environment using this testing system. By using this type of system, it makes possible to investigate the intrinsic role of the applied stress on the deformation behavior of material in light water reactor (LWR) conditions and also in other harsh environments like SCW conditions. In addition, the compactness and versatility of the setup makes this system particularly attractive for deployment in a hot-cell for testing of irradiated materials.

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Mathematical Model Research of Intelligent Rapid Testing System for Textile Materials Moisture Regain

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.421.477 ◽

2011 ◽

Vol 421 ◽

pp. 477-482

Author(s):

Xiang Gang Yin ◽

Wei Wei Ge

Keyword(s):

Mathematical Model ◽

Testing System ◽

Rapid Testing ◽

Moisture Regain ◽

Textile Materials ◽

Actual Result ◽

Testing Period ◽

Testing Method ◽

Model Research ◽

New Instrument

Because there exist some disadvantages of the traditional moisture regain testing method (oven drying) for textile materials, such as longer testing period, higher energy wastage, laboring intensity, and inefficient, a new instrument i.e. moisture regain rapid testing system has been researched, designed and manufactured for raw silk in this project. This system can record real-time the weight of raw silk sample during the drying in the certain environment oven. The index prediction model has been developed based on the accumulating generation operator (1-AGO) after the data have been pretreated. According to this model, the percent of error is only 2.09% between the predicted value and actual result of raw silk moisture regain within the drying cycle of 40min by the rapid testing system.

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