Relevant bibliographies by topics / Expansion valve

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Expansion valve'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Expansion valve"

1

Hewitt, N. J., J. T. McMullan, N. E. Murphy, and C. T. Ng. "Comparison of expansion valve performance." International Journal of Energy Research 19, no. 4 (June 1995): 347–59. http://dx.doi.org/10.1002/er.4440190408.

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Zhang, Rongrong, Edwin J. Stanke, Genxiang Zhang, Yingchong Lu, Xiangli Sun, and Xiaolu Li. "Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve." International Journal of Refrigeration 100 (April 2019): 404–13. http://dx.doi.org/10.1016/j.ijrefrig.2019.02.018.

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3

Saxon, John T., Keith B. Allen, David J. Cohen, and Adnan K. Chhatriwalla. "Bioprosthetic Valve Fracture During Valve-in-valve TAVR: Bench to Bedside." Interventional Cardiology Review 13, no. 01 (2017): 20. http://dx.doi.org/10.15420/icr.2017:29:1.

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Valve-in-valve (VIV) transcatheter aortic valve replacement (TAVR) has been established as a safe and effective means of treating failed surgical bioprosthetic valves (BPVs) in patients at high risk for complications related to reoperation. Patients who undergo VIV TAVR are at risk of patient—prosthesis mismatch, as the transcatheter heart valve (THV) is implanted within the ring of the existing BPV, limiting full expansion and reducing the maximum achievable effective orifice area of the THV. Importantly, patient—prosthesis mismatch and high residual transvalvular gradients are associated with reduced survival following VIV TAVR. Bioprosthetic valve fracture (BVF) is as a novel technique to address this problem. During BPV, a non-compliant valvuloplasty balloon is positioned within the BPV frame, and a high-pressure balloon inflation is performed to fracture the surgical sewing ring of the BPV. This allows for further expansion of the BPV as well as the implanted THV, thus increasing the maximum effective orifice area that can be achieved after VIV TAVR. This review focuses on the current evidence base for BVF to facilitate VIV TAVR, including initial bench testing, procedural technique, clinical experience and future directions.
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Murayama, Kouji. "4809518 Laminate type evaporator with expansion valve." Heat Recovery Systems and CHP 10, no. 1 (January 1990): v. http://dx.doi.org/10.1016/0890-4332(90)90272-l.

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Ravindra, Vutukuru, and M. Ramgopal. "Studies on a Solar Assisted, CO2 Based Trigeneration System for Milk Processing: Performance Comparison between Throttle Valve and Ejector Expansion Valve." Journal of Clean Energy Technologies 7, no. 2 (March 2019): 19–24. http://dx.doi.org/10.18178/jocet.2019.7.2.504.

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Raja, Y., B. Holloway, and S. N. Doshi. "Symmetrical expansion of an Edwards Sapien valve in a congenitally bicuspid aortic valve." Heart 97, no. 13 (April 8, 2011): 1113. http://dx.doi.org/10.1136/hrt.2011.223107.

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Khodaee, Farhan, Mohammed Barakat, Mostafa Abbasi, Danny Dvir, and Ali N. Azadani. "Incomplete expansion of transcatheter aortic valves is associated with propensity for valve thrombosis." Interactive CardioVascular and Thoracic Surgery 30, no. 1 (September 5, 2019): 39–46. http://dx.doi.org/10.1093/icvts/ivz213.

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Abstract OBJECTIVES Clinical and subclinical leaflet thromboses are increasingly recognized complications following transcatheter aortic valve replacement. Identification of the risk factors is important to mitigate the occurrence of leaflet thrombosis in transcatheter aortic valves (TAVs) and ensure their long-term function. The goal of this study was to determine the effect of incomplete expansion of TAVs on the likelihood of leaflet thrombosis following transcatheter aortic valve replacement. METHODS Using experimental and computational methods, 3-dimensional unsteady flow fields of 26-mm SAPIEN 3 valves expanded to 3 different diameters (i.e. 26.0 mm, 23.4 mm and 20.8 mm) were determined in patient-specific geometries. The diameters corresponded to 100%, 90% and 80% stent expansion, respectively. To address the potential difference in the likelihood of leaflet thrombosis, blood residence time (i.e. stasis) and viscous shear stress on the surface of TAV leaflets were quantified and compared. RESULTS The results indicated that TAV underexpansion increased blood stasis on the TAV leaflets. Blood residence time on the surface of the leaflets after 80% and 90% TAV expansion on average was 9.4% and 4.1% more than that of the fully expanded TAV, respectively. In addition, areas of blood stasis time of more than 0.5 s, which are highly prone to platelet activation, increased linearly as the degree of TAV underexpansion increased. CONCLUSIONS Incomplete expansion of TAVs increases blood stasis on the surface of TAV leaflets. Regions of blood stasis promote platelet activation and thrombotic events. TAV underexpansion can therefore increase the risk of leaflet thrombosis in patients with transcatheter aortic valve replacement.
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Fitzgerald, Carmel A. "Current Perspectives on Prosthetic Heart Valves and Valve Repair." AACN Advanced Critical Care 4, no. 2 (May 1, 1993): 228–43. http://dx.doi.org/10.4037/15597768-1993-2003.

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The quest for the ideal cardiac valve substitute represents a highly categorized goal for the cardiac surgical community. Ongoing research has resulted in the development and creation of multiple newer heart valves and techniques for valve repair. Each of the many valves commercially available possesses a wide array of features. With the expansion of research investigations, improvement in long-term management can be translated and incorporated directly into patient care. As valvular replacement and repair/reconstruction surgery become more commonplace, it is paramount for nurses to be knowledgeable regarding the critical components of care
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Kamath, Akshay, Shravan Rao, Michael Rauchwerger, Keith Korver, Christian Spies, and David Daniels. "CRACKING THE CASE: TREATMENT OF VALVE-IN-VALVE TMVR PROSTHESIS UNDER-EXPANSION WITH SURGICAL BIOPROSTHETIC VALVE FRACTURE." Journal of the American College of Cardiology 77, no. 18 (May 2021): 2465. http://dx.doi.org/10.1016/s0735-1097(21)03820-1.

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Won, Sung-Pil. "Modelling of an Automotive Block Type Thermostatic Expansion Valve." Korean Journal of Air-Conditioning and Refrigeration Engineering 23, no. 4 (April 10, 2011): 251–58. http://dx.doi.org/10.6110/kjacr.2011.23.4.251.

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Dissertations / Theses on the topic "Expansion valve"

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Polášek, Radek. "Modelování vodního zástřikového systému parního ventilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-392856.

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The purpose of the thesis is to create a model for an analysis of a steam conditioning valve whose function is to reduce the temperature of the steam using a spray water system. First of all, simulation of the fluid flow and heat transfer is done using CFD analysis. Then the results are used for thermal stress calculation.
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Písařovic, Antonín. "Implementace točivých redukcí v teplárenské praxi." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219403.

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The thesis is devoted to the utilisation of expansion turbines in the thermal power stations and in the industry companies using gas pressure reduction for technology purposes. The theoretic part of this thesis deals with the technology equipment such as steam and gas turbines, generators and reduction stations. The special attention is given to the expansion turbines with regard to its dividing in two groups: for steam reduction and for gas reduction. The parctical part includes the preliminary and detailed calculation of the expansion turbin for parameters of reduction line for combustion turbines, the generator proposal and the possibility of power extraction. The economic part completes the thesis with the economic evaluation of investment efficiency.
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Tambovtsev, Alexander. "Energieeinsparung in Kälteanlagen durch Kombination von thermostatischem Expansionsventil und innerem Wärmeübertrager." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1218482331656-43301.

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Die Erfindung der Kältemaschine macht es möglich, dass heute zu beliebiger Zeit Kälte in benötigter Menge und gewünschter Temperatur erzeugt werden kann. Aber für die Kälteerzeugung braucht man Antriebsenergie. Das Ziel dieser Doktorarbeit besteht darin, mit einer intelligenten Kombination von thermostatischem Expansionsventil (TEV) und innerem Wärmeübertrager (IWÜ) den Energieverbrauch von Kälteanlagen deutlich zu verringern, ohne dass dies zu einer Verschlechterung der Zuverlässigkeit oder wesentlichen Mehrkosten führt. Bis heute gelten die beiden bekannten Komponenten TEV und IWÜ als inkompatibel miteinander, weil die einfache Aneinanderreihung zu einem instabilen Regelverhalten führt. Nach detaillierter Analyse der Ursachen dieser Instabilität wird die Hypothese aufgestellt, dass durch eine absichtliche „Verschlechterung“ des IWÜ ein stabiler Arbeitsbereich gefunden werden kann. Bei dieser „Verschlechterung“ kann es sich z. B. um den Bypass eines Teils des Hochdruckstromes oder um eine Gleichstromanordnung der Ströme im Wärmeübertrager handeln. Diese Hypothese wurde primär durch Experimente, aber zusätzlich auch durch Simulationsrechnungen bestätigt. Dafür wurde ein Versuchsstand aufgebaut, mit welchem verschiedene Konfigurationen und Regelstrategien getestet wurden. Es wurde eine deutliche Verringerung des Energieverbrauchs gegenüber herkömmlichen Anordnungen erreicht.
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Tambovtsev, Alexander. "Energieeinsparung in Kälteanlagen durch Kombination von thermostatischem Expansionsventil und innerem Wärmeübertrager." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A23656.

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Die Erfindung der Kältemaschine macht es möglich, dass heute zu beliebiger Zeit Kälte in benötigter Menge und gewünschter Temperatur erzeugt werden kann. Aber für die Kälteerzeugung braucht man Antriebsenergie. Das Ziel dieser Doktorarbeit besteht darin, mit einer intelligenten Kombination von thermostatischem Expansionsventil (TEV) und innerem Wärmeübertrager (IWÜ) den Energieverbrauch von Kälteanlagen deutlich zu verringern, ohne dass dies zu einer Verschlechterung der Zuverlässigkeit oder wesentlichen Mehrkosten führt. Bis heute gelten die beiden bekannten Komponenten TEV und IWÜ als inkompatibel miteinander, weil die einfache Aneinanderreihung zu einem instabilen Regelverhalten führt. Nach detaillierter Analyse der Ursachen dieser Instabilität wird die Hypothese aufgestellt, dass durch eine absichtliche „Verschlechterung“ des IWÜ ein stabiler Arbeitsbereich gefunden werden kann. Bei dieser „Verschlechterung“ kann es sich z. B. um den Bypass eines Teils des Hochdruckstromes oder um eine Gleichstromanordnung der Ströme im Wärmeübertrager handeln. Diese Hypothese wurde primär durch Experimente, aber zusätzlich auch durch Simulationsrechnungen bestätigt. Dafür wurde ein Versuchsstand aufgebaut, mit welchem verschiedene Konfigurationen und Regelstrategien getestet wurden. Es wurde eine deutliche Verringerung des Energieverbrauchs gegenüber herkömmlichen Anordnungen erreicht.
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5

Schneider, Luciane. "Dinâmica locacional da vitivinicultura: novas regiões do Rio Grande do Sul e Vale do São Francisco." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11132/tde-09102006-134441/.

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Este estudo teve como objetivo central identificar quais fatores locacionais influenciaram a tomada de decisão de expandir os investimentos da atividade vitivinícola por parte dos empresários atuantes na Serra Gaúcha - principal pólo vitivinícola do país. Observou-se um movimento de expansão territorial da atividade vitivinícola para novas regiões do Rio Grande do Sul (Serra do Sudeste e Campanha) e para o Vale do São Francisco (Bahia e Pernambuco), regiões em que, anteriormente, não havia a prática de tal cultura. As informações da presente pesquisa foram obtidas através de entrevista direta, orientada por um questionário, com representantes das vinícolas. A abrangência da pesquisa foi de 73,3% da população alvo e foi realizada nos meses de dezembro/2005 no Rio Grande do Sul e janeiro/2006 no Vale do São Francisco. Os dados das entrevistas foram tratados com aplicação da estatística descritiva, pois grande parte das perguntas foi de ordem qualitativa. A hipótese que circunda este estudo é de que na agroindústria, as variáveis que envolvem a matéria-prima (qualidade, local de fornecimento) são os principais fatores que influenciam a tomada de decisão do sítio de produção. Como referencial teórico, associou-se as teorias relacionadas aos fatores locacionais com a teoria de Bowersox (1978). Através da pesquisa, pode-se verificar que a atividade vitivinícola brasileira mostrou estar condicionada à distribuição espacial dos recursos produtivos, destacando-se os fatores edafoclimáticos, qualidade da matéria-prima, fator comportamental do empresário e disponibilidade de terras. A pesquisa revelou que as empresas estão preocupadas com a qualidade final do produto (vinho), a qual é otimizada pela qualidade da matéria-prima (uva) que, por sua vez, depende das condições edafoclimáticas da região produtiva. Tal preocupação e/ou necessidade provocou esta expansão geográfica da atividade para a Serra do Sudeste e Campanha (no estado do Rio Grande do Sul) e no Vale do São Francisco. Esta última região também se mostrou alvo de investimentos estrangeiros e tornou-se (e ainda se torna) atrativa por apresentar excelentes condições edafoclimáticas, capacidade de duas safras por ano e produção constante no decorrer do ano, além de instalações processadoras de menor porte.
The purpose of this work is to identify which locational variables influenced the decision made by producers from the state of Rio Grande do Sul (RS), main viticulturist state in Brasil, to expand investments on the wine industry. There was a movement of territorial expansion of wine production to new regions in RS (Serra do Sudeste and Campanha) and to Vale do São Francisco, in the states of Bahia and Pernambuco, regions in which he grape agriculture hadrit started yet. The direct-interview with viticulturists was the main source of information used by this work. This research embraced 73,3% of the producers investing in those new regions, and it was conducted during December/2005, in the State of Rio Grande do Sul, and January/2006, in Vale do São Francisco. Descriptive statistic has been applied to summarize the data obtained with the interviews, due to qualitative variables representing most of the questions. The main hypothesis of this work suggests that in the agroindustry, variables involving raw material (quality, supplier) are the main factors in making the decision as to production area. A review of Bowersox Theory (1978) associated with the theory of locational factors was employed as theoretical referential. As for results, it was possible to validate that Brazilian viticulture was conditioned to the place distribution of productive resources, standing out the following factors: edaphoclimatics, raw material quality, manager behavior and land availability. Thus, the research revealed that companies have been concerned regarding the quality of the final product (wine), which is optimized through raw material quality (grape) that depends on edaphoclimatic conditions of the productive area. Indeed, the need to achieve a higher level of quality forced the viticulture to expand its production area to Serra do Sudeste and Campanha (RS) and Vale do São Francisco, which has recently turned into an attractive area to foreign investment, because of its excellent edaphoclimatic conditions, two harvests a year, continuous output year round and a small agroindustry.
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Rodrigues, Hellbia Samara Moreira de Carvalho. "Expansão da cana-de-açúcar na microrregião do Vale do Rio dos Bois – Goiás." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/5574.

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In Brazil the intensification of international discussions in the 21st century on the production of clean and renewable energy emphasizes the expansion of sugar cane, raw material for the production of biofuel ethanol, considered to be less polluting. The recent expansion of sugar cane in Brazil has as target area the Center - South of the Cerrado Biome, mainly in land before occupied by grain, cotton and pastures and comes inducing accelerated change of land use, worrying about, among other aspects, by the environmental impacts related. Since the late 1990, especially after 2000, the cane has been expanding rapidly on areas before cultivated areas with other cultures, especially grains, in addition to pastures and increasing the number of plants. The mesoregion south of the state of Goiás, preferred for this rapid expansion of current, especially the sugar cane microregions of Quirinópolis, Southwest, of Vale do Rio dos Bois (MRVRB), is cultivates cane since the decade of 1970, when it was favored by Proálcool - Program of Alcohol, public policy federal that stimulated the production of vehicles powered by alcohol and which ran from 1975 to 1979; a new and recent expansion of cane was initiated in mid 2004. The research aims to assess the expansion of the monoculture of sugar cane in MRVRB 1985 to 2013, in order to clarify the causes of the recent process and assess its direct and indirect impacts, with emphasis in the areas of permanent preservation. The methodology was based on the interpretation of satellite images in the years 1985, 1995, 2005, 2010 and 2013, and in the interpretation of maps the physical environment through integrated analysis that have led to the drafting of the maps of suitability agricultural and the identification of areas with restrictions to the cultivation of sugar cane. It is concluded that in the period considered the standard MRVRB I have recent replacement of areas of grain and subsequently pastures besides remaining areas of Cerrado, considered to be Areas of Permanent Preservation (APP), albeit at a lower proportion. The lower expansion was assigned to the edaphic limitations and relief (topography), which together and associated to offer logistics, explain its leadership not in recent expansion of the sugarcane plantation.
No Brasil a intensificação dos debates internacionais no século XXI sobre a produção de energia limpa e renovável enfatiza a expansão da cana-de-açúcar, matéria prima para a produção do biocombustível etanol, considerado menos poluente. A expansão recente da cana no Brasil tem como área alvo o Centro – Sul do Bioma Cerrado, principalmente em terras antes ocupadas por grãos, algodão e pastagens e vem induzindo mudança acelerada do uso das terras, preocupando, dentre outros aspectos, pelos impactos ambientais relacionados. Desde final dos anos de 1990, em especial após 2000, a cana vem expandindo rapidamente sobre áreas antes cultivadas com outras culturas, sobretudo grãos, além de pastagens e aumentando o número de usinas. A mesorregião sul do estado de Goiás, preferida para essa rápida expansão canavieira atual, sobretudo as microrregiões de Quirinópolis, do Sudoeste, do Vale do Rio dos Bois (MRVRB), está cultiva cana desde a década de 1970 quando foi favorecida pelo Proálcool-Programa do Álcool, política pública federal que estimulou a produção de veículos movidos a álcool e que vigorou de 1975 a 1979, uma nova e recente expansão da cana foi iniciada em meados de 2004. A pesquisa tem por objetivo avaliar a expansão da monocultura da cana-de-açúcar na MRVRB de 1985 a 2013, de modo a esclarecer as causas desse processo recente e avaliar os seus impactos diretos e indiretos, com ênfase nas áreas de preservação permanente. A metodologia baseou-se em interpretação de imagens de satélite dos anos de 1985, 1995, 2005, 2010 e 2013, e em interpretação de mapas do meio físico através de análise integrada que permitiram a elaboração dos mapas de aptidão agrícola e a identificação das áreas com restrições ao cultivo da cana-de-açúcar. Conclui-se que no período considerado a MRVRB revelo o padrão recente de substituição de áreas de grãos e posteriormente pastos, além de áreas remanescentes do Cerrado, consideradas áreas de preservação permanente (APP), ainda que em menor proporção. A menor expansão foi atribuída às limitações edáficas e de relevo (topografia) que, conjugadas e associadas à oferta logística, explicariam sua não liderança estadual na expansão recente da cultura canavieira.
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Quintanilla, Maria T. "An asymptotic expansion for value-at-risk." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29264.pdf.

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Dockner, Engelbert J., Denes Kucsera, and Margarethe Rammerstorfer. "The Value and Risk Implications of Grid Expansion Investments." Forschungsinstitut für Regulierungsökonomie, WU Vienna University of Economics and Business, 2010. http://epub.wu.ac.at/3071/1/ge_with_balancing.pdf.

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In this article, we look at a model with (independent) system operator who faces stochastic but growing transmission demand and a penalty if frequency is not balanced. In this set up, we derive an optimal grid expansion investment strategy and analyze its value and risk implications. It turns out that the firm value is strictly concave in the level of transmission demand. Firm value, however, increases with optimal investment for any level of demand. Moreover, firm risk is decreasing in the level of demand and higher when the firm has an investment option. The risk increase corresponds to the exercise of the call option and is stronger, the closer the firm approaches its exercise trigger. (author's abstract)
Series: Working Papers / Research Institute for Regulatory Economics
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Šindler, Matěj. "Zpracování dokumentace pro testovací stanici výrobní linky řídicích jednotek tepelných čerpadel." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442478.

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In opening, this diploma thesis is introducing the company Daikin Device Czech s.r.o. In the next step the principle of function of a heat pump. Then there are described its main parts. First part of this thesis is dedicated to assembly line of the heat pump’s switchboxes. The layout of the assembly line is described and added with description of used health and quality measures. Main part is speaking about running test of the switchbox line. The main function of the test is described alongside with description of the process of making the testing software.
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Kwon, Youngho. "Estimating the value of financial transmission rights for transmission expansion." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497600.

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The current situation of insufficient investment in transmission tends to weaken the advantages of a deregulated power industry. These shortages mainly arise because of the risk of not recovering the cost of investing in new lines Location Marginal prices (LMPs) and Financial Transmission Rights (FTRs) are key elements in reducing these investment risks. Market participants are able to hedge against price fluctuations caused by transmission congestion through the purchase or sale of FTRs. The value of FTRs, which is tied to the difference in prices between locations in the network, would indicate where transmission expansion should be implemented.
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Books on the topic "Expansion valve"

1

R, MacCluer C., ed. Boundary value problems and Fourier expansions. Mineola, N.Y: Dover Publications, 2004.

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Abgeleitete Birkhoff-Reihen bei Randeigenwertproblemen zu N(y) = [lambda] P(y) mit [lambda]-abhängigen Randbedingungen. Giessen: Selbstverlag des Mathematischen Instituts, 1989.

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Matching of asymptotic expansions of solutions of boundary value problems. Providence, R.I: American Mathematical Society, 1992.

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Ilʹin, A. M. Matching of asymptotic expansions of solutions of boundary value problems. Providence, R.I: American Mathematical Society, 1992.

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Soglasovanie asimptoticheskikh razlozheniĭ resheniĭ kraevykh zadach. Moskva: "Nauka," Glav. red. fiziko-matematicheskoĭ lit-ry, 1989.

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Corporate Management Tax Conference. (1996 Toronto, Ont.). Income tax and GST planning for the purchase, sale, and Canada/US expansion of a business. Toronto: Canadian Tax Foundation, 1996.

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Schulze, Bert-Wolfgang. Pseudo-differential boundary value problems, conical singularities, and asymptotics. Berlin, Federal Republic of Germany: Akademie Verlag, 1994.

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MacCluer, C. R. Boundary value problems and orthogonal expansions: Physical problems from a Sobolev viewpoint. Piscataway, NJ: IEEE Press, 1994.

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Kerf, F. de. Asymptotic analysis of a class of perturbed Korteweg-de Vries initial value problems. [Amsterdam, the Netherlands]: Centrum voor Wiskunde en Informatica, 1988.

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Benedek, Agnes Ilona. Remarks on a theorem of Å. Pleijel and related topics. Bahia Blanca, Argentina: INMABB-CONICET, Universidad Nacional del Sur, 2005.

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Book chapters on the topic "Expansion valve"

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Manka, Alexandra, Dirk Bergmann, David Ghosh, Reinhard Strey, and Judith Wölk. "Preliminary Results on Homogeneous Nucleation of Water: A Novel Measurement Technique using the Two-valve Expansion Chamber." In Nucleation and Atmospheric Aerosols, 260–64. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6475-3_54.

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Dobrushkin, Vladimir A. "Orthogonal Expansions." In Applied Differential Equations with Boundary Value Problems, 545–95. Boca Raton : CRC Press, 2017.: Chapman and Hall/CRC, 2017. http://dx.doi.org/10.1201/9781315369785-10.

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Huang, Weiwei. "Finding the Right Amount of Openness, Compromise, and Huidu, and Properly Balancing Expansion and Control." In Built on Value, 141–73. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7507-1_6.

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Aaronson, M. "Calibration of the Infrared Tully-Fisher Relation and the Global Value of the Hubble Constant." In Galaxy Distances and Deviations from Universal Expansion, 55–62. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4702-3_10.

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Phiri, Mwanda, and Francis Ziba. "Expansion of Regional Supermarkets in Zambia: Finding Common Ground with Local Suppliers." In Value Chains in Sub-Saharan Africa, 43–58. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-06206-4_4.

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Kuemmerle, Walter. "The Process of International Expansion in Knowledge-Intensive Settings: Research Questions, Theory and Summary of Findings." In Creating Value through International Strategy, 26–42. London: Palgrave Macmillan UK, 2004. http://dx.doi.org/10.1057/9780230005563_3.

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Rossikhin, Yury A., and Marina V. Shitikova. "Boundary-Value Dynamic Problems of Thin Bodies, Ray Expansion Approach." In Encyclopedia of Continuum Mechanics, 194–211. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-55771-6_108.

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Rossikhin, Yury A., and Marina V. Shitikova. "Boundary-Value Dynamic Problems of Thin Bodies, Ray Expansion Approach." In Encyclopedia of Continuum Mechanics, 1–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-53605-6_108-1.

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Klees, Roland. "Perturbation Expansion for Solving the Fixed Gravimetric Boundary Value Problem." In International Association of Geodesy Symposia, 340–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79824-5_42.

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Sweeting, Trevor J. "Recent Results on Asymptotic Expansions in Extreme Value Theory." In Lecture Notes in Statistics, 10–20. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3634-4_2.

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Conference papers on the topic "Expansion valve"

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Mingjiang, Hu, and Meng Jucai. "Simulating the performance on electronic expansion valve." In 2011 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2011. http://dx.doi.org/10.1109/iceceng.2011.6057510.

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Tingrui, Liu, Wang Jidai, and Chen Guangqing. "Simulation and Control of Electronic Expansion Valve." In 2008 Pacific-Asia Workshop on Computational Intelligence and Industrial Application (PACIIA). IEEE, 2008. http://dx.doi.org/10.1109/paciia.2008.11.

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Ichimaru, Kohei, Hiroshi Sakai, Hiroshi Kanesaka, and Desmond E. Winterbone. "A Rotary Valve Controlled High Expansion Ratio Gasoline Engine." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/940815.

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Santoso, Budi, Didik Djoko Susilo, and D. D. D. P. Tjahjana. "Hermetic compressor and block expansion valve in refrigeration performance." In SUSTAINABLE ENERGY AND ADVANCED MATERIALS : Proceeding of the 4th International Conference and Exhibition on Sustainable Energy and Advanced Materials 2015 (ICE-SEAM 2015). AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4943440.

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Chiang, Y., X. Trinh, and J. Jeng. "Flat Bandwidth Expansion for Spin-Valve GMR Magnetic Field Sensors." In 2018 IEEE International Magnetic Conference (INTERMAG). IEEE, 2018. http://dx.doi.org/10.1109/intmag.2018.8508135.

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Tamilporai, P., S. Chandrasekaran, S. Subramaniyam, J. Jancirani, and K. V. Lakshminarayanarao. "Numerical Investigations on Extended Expansion Engine." In ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/icef2003-0718.

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A great deal of research has been directed towards understanding the dependence of emissions and fuel economy on the operating and design characteristics of spark-ignition homogeneous-charge engine. Several recent investigations have been concerned with modifying the conventional spark-ignition such that the part load BSFC (brake specific fuel consumption) is decreased. Many of the proposed modifications convert the engine from fixed to variable displacement, i.e., the engine size is varied to suit the vehicle needs. Another possible modification to the conventional engine is to control the load of the engine by controlling the timing of the intake-valve closure rather than by variable-density throttling. This investigation examines the delaying intake valve closing as a method of controlling the engine load without incurring the usual part-load throttling losses. The extended expansion engine (EEE) is an engine with the power output regulated by controlling the crank angle at which the intake valve closes (IVC). As in case of a conventional engine the intake valve opens just prior to and remains open through out the intake stroke of the engine. However, the intake valve also remains open over a portion of the compression stroke while the piston pushes part of the cylinder charge back into the intake manifold and stored in a plenum. A one-way valve is provided to prevent the charge from re-entering the carburetor. After the intake valve closes, the actual compression starts and the expansion and exhaust strokes are similar to those of the conventional engine. The effective cylinder volume determines the trapped cylinder charge and therefore the power output, at the time of the intake valve closing. This paper mainly deals with the numerical studies on single cylinder, four stroke, spark ignition, Extended Expansion Engine extended expansion engine with intake valve closure delayed to produce an expansion ratio that is larger than the compression ratio. The Engine processes are simulated on a computer using thermodynamic and global modeling techniques. Further the concept of lean burn technology is applied to the simulated processes and the engine performance and emission characteristics are studied from the simulated results. Two-zone combustion model is adopted for the analysis of combustion. The model is also associated with sub models for calculating the combustion duration and equilibrium composition of five product species. From this investigations and comparison of results, it is concluded that the simulation work developed predicts the performance and emission characteristics of this engine reasonably well. Therefore it is evident that the developed code can be used with confidence for further parametric studies.
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Pichler, Kurt, Edwin Lughofer, Markus Pichler, Thomas Buchegger, Erich Peter Klement, and Matthias Huschenbett. "Detecting Broken Reciprocating Compressor Valves in pV Diagrams of Different Valve Types." In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3009.

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This paper presents a novel data-driven approach for detecting broken reciprocating compressor valves that is based on the idea that a broken valve will affect the shape of the pressure-volume (pV) diagram. This effect can be observed when the valves are closed. To avoid disturbances due to the load control we concentrate on the expansion phase linearized using the logarithmic pV diagram. The gradient of the expansion phase serves as an indicator of the fault state of the valves. Since the gradient is also affected by the pressure conditions, they are used as an additional indicator. After feature extraction and removing offset in the feature space by solving an optimization problem, classification of different valve types can be achieved with one support vector machine classifer. The performance of the method was validated by analyzing real-world measurement data. Our results show a very high classification accuracy for varying compressor load and pressure conditions.
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Gonçalves de Oliveira, André, Hélio Augusto Goulart Diniz, Willian Moreira Duarte, Luiz Machado, and Raphael Nunes. "COMPARATIVE STUDY OF A DIRECTED EXPANSION SOLAR ASSISTED HEAT PUMP USING CAPILLARY TUBES AND THERMOSTATIC EXPANSION VALVE." In 18th Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2020. http://dx.doi.org/10.26678/abcm.encit2020.cit20-0068.

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Martins, Jorge, Carlos Pereira, and F. P. Brito. "A New Rotary Valve for 2-Stroke Engines Enabling Over-Expansion." In SAE 2016 World Congress and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-01-1054.

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Liu, Tingrui, Guangqing Chen, and Jidai Wang. "Autocontrol of Electronic Expansion Valve Based on Optimal Fuzzy PD Controller." In 2008 Second International Conference on Genetic and Evolutionary Computing (WGEC). IEEE, 2008. http://dx.doi.org/10.1109/wgec.2008.61.

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Reports on the topic "Expansion valve"

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Davis, S., and D. Underwood. Cracking of 1-inch UF sub 6 cylinder valve packing nuts: The effects of packing nut torque on stem seal leakage and packing nut stress due to thermal expansion of the PTFE stem seal rings. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/5684105.

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Sigrin, B., P. Sullivan, E. Ibanez, and R. Margolis. Representation of Solar Capacity Value in the ReEDS Capacity Expansion Model. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1126843.

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Darenskaya, M. A., A. A. Semendyaev, D. A. Stupin, L. A. Grebenkina, I. N. Danusevich, L. I. Kolesnikova, and S. I. Kolesnikov. ACTIVITY OF ANTIOXIDANT ENZYMES IN REGIONAL AREA BLEEDING WITH VARICOSE EXPANSION OF THE VALVES OF THE SMALL PELVIS IN WOMEN. EXPERIMENTAL BULLETIN BIOLOGY AND MEDICINE. - 2020, 2020. http://dx.doi.org/10.18411/2413-1008-2020-12088.

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Alemu, Dawit, and Tirhas Kinfe. Responses of Rice Farmers Engaged in Vegetable Production: Implications of the Collapse of Vegetable Prices in the Fogera Plain. Institute of Development Studies (IDS), July 2021. http://dx.doi.org/10.19088/apra.2021.017.

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Since the early 1980s, the Fogera Plain has been one of Ethiopia's major rice production areas. The introduction of rice, its commercialisation and the subsequent increased surplus production has led to the ability of smallholder rice farmers to intensify their production through diverse investments, mainly in supplementary irrigation. This has also enabled rice farmers to diversify crop production, mainly during the off-season, through the production of high-value crops like vegetables. Despite this expansion, a recent visit to the Fogera Plain by the authors revealed that most smallholder rice farmers were not able to sell their onions due to the collapse of local markets. To investigate this collapse further, this paper follows the authors' investigation of farmer investments in producing onion, their responses to the collapse of the onion market, and the implications for rural livelihood improvement within the Fogera Plain.
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