Numerical Study on the Flow around Multicopter Static Thrust Tester in the Environmental Test Chamber

2021 ◽  
Vol 45 (12) ◽  
pp. 663-671
Author(s):  
Dong-Jin Sheen ◽  
Chang-Hwan Park ◽  
Hak Youn Kim
Keyword(s):  
Numerical Study ◽  
Test Chamber ◽  
Environmental Test

Environmental test chamber elucidation of ozone-initiated secondary pollutant emissions from painted wooden panels in buildings

2012 ◽  
Vol 50 ◽  
pp. 135-140 ◽  
Author(s):  
Yung-Tai Huang ◽  
Cheng-Chen Chen ◽  
Yaw-Kuang Chen ◽  
Che-Ming Chiang ◽  
Chia-Yen Lee
Keyword(s):  
Test Chamber ◽  
Pollutant Emissions ◽  
Environmental Test

Determination of the Emission of Volatile Organic Compounds from Leather Seats in Environmental Test Chamber

2018 ◽  
Vol 768 ◽  
pp. 31-35
Author(s):  
Jin Wang ◽  
Zhen Zhu Ma ◽  
Lu Chen ◽  
Hong Juan Sun ◽  
Wu Kun Fan
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Test Chamber ◽  
Paper Analysis ◽  
National Standard ◽  
Test Results ◽  
Total Volatile Organic Compound ◽  
Volatile Organic ◽  
Environmental Test

With reference to the international standard ISO16000-9 and the national standard GB/T 31106-14, this paper has chosen leather seats as the research object in order to study the emission of volatile organic compounds (VOCs) and total volatile organic compound (TVOC). The test results show that about 21 species of VOCs released from the leather seats were measured, including several types of aldehydes, ketones, aromatic hydrocarbon ,hydrocarbon, lipids and so on.This paper analysis the possible sources of volatile organic compounds in leather seats as well.

Study on Preparation and Photocatalytic Performance of Co-Doped TiO2 with Cu and Ce

2011 ◽  
Vol 399-401 ◽  
pp. 722-726 ◽  
Author(s):  
Jiang Ping Zhao ◽  
Xiao Ni Yang ◽  
Hao Zhang
Keyword(s):  
Photocatalytic Performance ◽  
Sol Gel ◽  
Test Chamber ◽  
Raw Material ◽  
Nano Particles ◽  
Molar Ratio ◽  
X Ray ◽  
Co Doping ◽  
Photocatalytic Activities ◽  
Environmental Test

In this paper, Cu-Ce/TiO2nano-particles, whose molar ratio account for 2%,2.5%,3%,3.5% and 4% respectively, were synthesized by sol-gel method, using Ti(C4H9O)4as the raw material, And the photocatalytic activities of the prepared samples were investigated by degrading formaldehyde gas under pure visible light through simulating indoor environment in the environmental test chamber. Moreover, X-Ray Powder Diffraction (XRD) and Ultraviolet-visible spectrophotometer were applied to analyze the crystallite size and optical properties of the samples. It is indicated that the sample of 2.5% performs best in the test. Besides, photocatalytic mechanism of co-doping of Cu-Ce was discussed.

scholarly journals Multivariable Adaptive Control of an Environmental Test Chamber

1990 ◽  
Vol 23 (1) ◽  
pp. 347-352
Author(s):  
J.M. Dion ◽  
L. Dugard ◽  
Minh Tri Nguyen ◽  
G. Sanchez ◽  
A. Franco ◽  
...  
Keyword(s):  
Adaptive Control ◽  
Test Chamber ◽  
Environmental Test

Unique Test Capabilities of the Eglin AFB McKinley Climatic Laboratory

1987 ◽  
Vol 30 (6) ◽  
pp. 27-29
Author(s):  
Lorin Klein
Keyword(s):  
Test Chamber ◽  
Test Facility ◽  
Jet Engines ◽  
Main Chamber ◽  
The World ◽  
Environmental Test

The 92,900m3 (3.28 million ft3) Main Chamber of the Climatic Laboratory (Figure 1) is the largest and most complex climatic environmental test chamber in the world. It employs an air makeup system to cool or heat air to the test temperatures and ingest this air into the chamber to allow the operation of jet engines during climatic tests. Other test chambers discussed are the 2,750 m3 (97,000 ft3) Engine and Equipment Test Facility and the 2,125 m3 (75,000 ft3) Sun, Wind, Rain, and Dust Facility.

MIMO adaptive constrained predictive control case study: An environmental test chamber

Automatica ◽  
1991 ◽  
Vol 27 (4) ◽  
pp. 611-626 ◽  
Author(s):  
J.M. Dion ◽  
L. Dugard ◽  
A. Franco ◽  
Nguyen Minh Tri ◽  
D. Rey
Keyword(s):  
Predictive Control ◽  
Test Chamber ◽  
Control Case ◽  
Environmental Test

scholarly journals Preventive Maintenance Strategy of Environmental Test Chamber Based on Particle Swarm Optimization Algorithm

2022 ◽  
Vol 16 ◽  
pp. 618-627
Author(s):  
Xianwen Zhou ◽  
Chaoyang Gu ◽  
Yuyu Sun ◽  
Chengjing Han ◽  
Wei Gu ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Optimization Algorithm ◽  
Preventive Maintenance ◽  
Particle Swarm Optimization Algorithm ◽  
Test Chamber ◽  
Maintenance Cost ◽  
Maintenance Strategy ◽  
Swarm Optimization ◽  
Multi Objective ◽  
Environmental Test

With the development of various physical industries, people pay more attention to reliability tests and test equipment. To solve the problem of making maintenance strategy of an environmental test chamber for reliability test, a periodic preventive maintenance strategy based on RCM(Reliability Centre Maintenance) is proposed. Firstly, a multi-objective optimization model of reliability and maintenance cost is established by combining reliability theory and life distribution theory, and two objectives of equipment reliability and maintenance cost are considered. Secondly, the actual environmental test chamber fault maintenance data is analyzed, and it is found the fault distribution meets the dual parameter Weibull. Finally, the particle swarm optimization algorithm is used to solve the multi-objective model optimization, and a series of Pareto optimal solutions are obtained, that is, the number of maintenance times and the corresponding time interval in the operation cycle of the environmental test chamber, and these solutions might be good references for maintenance management personnel.

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