Feasibility Study of Sublimated Water Vapor Ionization, Electrostatic Transportation, and Deposition on an Engineered Cold Plate in a Low-Pressure Condition

2022 ◽  
Author(s):  
Nathaniel I. Jurado ◽  
Aaron D. Amato ◽  
Priscilla A. Mendoza ◽  
Emmanuel Negron-Ortiz ◽  
Amelia D. Greig ◽  
...  
Keyword(s):  
Water Vapor ◽  
Feasibility Study ◽  
Low Pressure ◽  
Cold Plate ◽  
Pressure Condition ◽  
Vapor Ionization

scholarly journals Photocatalytic Activity Enhancement of Low-pressure Cold-Sprayed TiO2 Coatings Induced by Long-term Water Vapor Exposure

2021 ◽  
Author(s):  
Seremak Wioletta ◽  
Baszczuk Agnieszka ◽  
Jasiorski Marek ◽  
Gibas Anna ◽  
Winnicki Marcin
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Water Vapor ◽  
Sol Gel ◽  
Low Pressure ◽  
Oxygen Depletion ◽  
Amorphous Structure ◽  
Industrial Applications ◽  
Additional Parameter

AbstractThis work shows that the titanium dioxide coatings obtained by low-pressure cold gas spraying with the use of the sol–gel amorphous TiO2 powder are characterized by photocatalytic activity despite their partial amorphous content. Moreover, the research outcome suggests that the decomposition rate of organic pollutants is enhanced after long-term exposure to moisture. The condensation humidity test is not detrimental to the continuity and integrity of the coating, but the phase composition of coatings changes—with the exposure to water vapor, the portion of the amorphous phase crystallizes into brookite. The mechanism responsible for the conversion of amorphous TiO2 into brookite is attributed to the water-driven dissolution and reprecipitation of TiO6 octahedra. It has been shown that an additional parameter necessary for the stabilization of the brookite is the oxygen depletion of the amorphous structure of titanium dioxide. Considering the results presented in this paper and the advantages of a portable, low-pressure cold spray system for industrial applications, it is expected that TiO2 coatings produced from a sol–gel feedstock powder can be further developed and tested as efficient photocatalysts.

Psychological Effects of Abuse, Partner Pressure, and Alcohol: The Roles of in-the-Moment Condom Negotiation Efficacy and Condom-Decision Abdication on Women’s Intentions to Engage in Condomless Sex

2019 ◽  
pp. 088626051985716 ◽  
Author(s):  
Elizabeth C. Neilson ◽  
Amanda K. Gilmore ◽  
Cynthia A. Stappenbeck ◽  
Natasha K. Gulati ◽  
Erin Neilon ◽  
...  
Keyword(s):  
Condom Use ◽  
Self Efficacy ◽  
Low Pressure ◽  
Psychological Effects ◽  
Pressure Condition ◽  
Women’S Experiences ◽  
Condomless Sex ◽  
Condom Negotiation ◽  
Women's Experiences ◽  
The Moment

Women’s experiences of intimate partner violence (IPV) from their male partners can include psychological, physical, and sexual control and abuse. The psychological effects of abuse (PEA) include terror, shame, and loss of power and control in relationships. While women’s experiences of IPV are associated with decreased condom use, limited research has examined the impact of PEA on women’s condom use. Intoxicated (breath alcohol content [BrAC] = .10%) versus sober women were evaluated to test the hypothesis that PEA would interact with intoxication and scenario-context partner pressure to forgo condom use and be associated with intentions to engage in condomless sex. After beverage administration, community women ( N = 405) projected themselves into a computerized scenario depicting a male partner exerting high or low pressure for condomless sex. In-the-moment condom negotiation self-efficacy and condom-decision abdication—letting the man decide on condom use—were assessed. Path analysis examined the direct and indirect effects of PEA, alcohol, and partner pressure conditions on condomless sex intentions. PEA increased condomless sex intentions indirectly through decreased condom negotiation self-efficacy. Intoxication increased condomless sex intentions indirectly through decreased condom negotiation self-efficacy and increased condom-decision abdication. Intoxicated women in the low pressure condition were more likely to abdicate the condom decision than women in the high pressure condition. Women who have experienced greater PEA may benefit from interventions focusing on how condom negotiation self-efficacy, condom-decision abdication, and intoxication influence sexual decision-making.

Experimental Study on Two-Phase Natural Circulation Flow Instability in Rod Bundle Channel Under Low Pressure Condition

2018 ◽  
Author(s):  
Kun Cheng ◽  
Sichao Tan ◽  
Zheng Liu ◽  
Tao Meng
Keyword(s):  
Flow Instability ◽  
Natural Circulation ◽  
Oscillation Amplitude ◽  
Density Wave ◽  
Low Pressure ◽  
Heating Power ◽  
Pressure Condition ◽  
Two Phase ◽  
Rod Bundle ◽  
System Pressure

An experimental investigation was conducted in a natural circulation (NC) loop to study the characteristics of two-phase flow instability under low pressure condition. A 3 × 3 rod bundle channel was used as the test section. The effects of heating power, inlet subcooling degree and system pressure on the two-phase NC flow instability types and stable boundaries were studied. The experimental results show that three typical flow conditions can occur in rod bundle channel under NC condition, which are single-phase NC flow, subcooled boiling NC flow oscillation and density wave oscillations (DWO). The oscillation amplitude and period of DWO can be enlarged by increasing the heat flux. Increasing the inlet subcooling degree can increase the marginal heating power of flow instability in NC system. The occurrence of DWO can be suppressed by increasing the system pressure. The flow instability boundary presented by the subcooling number and phase change number was also obtained in present work.

Low-pressure OH radicals reactor generated by dielectric barrier discharge from water vapor

2020 ◽  
Vol 27 (6) ◽  
pp. 060701
Author(s):  
Li Wang ◽  
LunHua Deng ◽  
Bao Li ◽  
Bo Fang ◽  
WeiXiong Zhao ◽  
...  
Keyword(s):  
Water Vapor ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Low Pressure ◽  
Oh Radicals ◽  
Dielectric Barrier

Technical and Economic Analysis of 150MW Turbine Unit about Two Reconstruction Modes for High Back Pressure Heating

2013 ◽  
Vol 291-294 ◽  
pp. 1708-1713 ◽  
Author(s):  
Jun Zhai Duan ◽  
Wei Zheng ◽  
Xue Dong Wang ◽  
Yu Zhen Hao
Keyword(s):  
Performance Test ◽  
Heat Rate ◽  
Low Pressure ◽  
Back Pressure ◽  
Heating Condition ◽  
Pressure Condition ◽  
Lower Back ◽  
Cold Source ◽  
Technical And Economic Analysis ◽  
The One

In this paper, the characteristics of two modes of high back pressure reconstruction techniques for 150 MW reheat turbine units were researched. One was reconstruction of double back pressure and double rotors and the other was one-off reconstruction of LP cylinder. The former redesigned for lower pressure(LP) rotors for running at high back pressure, and hydraulic coupling bolts adopted to achieve the switch of low pressure rotors that run at high and lower back pressures. The one-off reconstruction of LP cylinder has achieved the switch of static and dynamic blades between high and low pressure. The two reconstruction both realized heat supply on the high back pressure condition, utilized cold source loss and increased the unit efficiency. After reconstruction, the economic index under both normal back pressure condition and high back pressure heating condition have been obtained by performance test. Under the high back pressure heating condition, the unit heat rate reaches 3700-3800kJ/kW.h, and the thermal efficiency has achieved 95-97%.

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