Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90019-0
C.R. Deeter, A.A.J. Hoffman
{"title":"Energy related mathematical models: Annotated bibliography","authors":"C.R. Deeter, A.A.J. Hoffman","doi":"10.1016/0013-7480(78)90019-0","DOIUrl":"https://doi.org/10.1016/0013-7480(78)90019-0","url":null,"abstract":"<div><p>The evaluation of various options for energy sources, energy conversion, and efficient use of energy has led to the use of computer-based mathematical models. To insure that these models are reasonably accurate representations of the situation being studied, it is desirable to have available information concerning the analysis of error propagation in mathematical models when implemented on computers.</p><p>As an aid to energy model builders who seek methods of analysis for their own work, as well as to provide a helpful guide for the research computer scientists working on the development of new methods for analysis of propagation of error, a classification scheme of error propagation methods is presented and an annotated bibliography of energy-related mathematical models classified by validation and error analysis methods is provided.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 4","pages":"Pages 189-227"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90019-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91632982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90017-7
Li-Ting Chen
{"title":"Gas-cycle solar refrigeration system performance","authors":"Li-Ting Chen","doi":"10.1016/0013-7480(78)90017-7","DOIUrl":"10.1016/0013-7480(78)90017-7","url":null,"abstract":"<div><p>It is possible to use a gas refrigerator in solar applications. The analysis of the cycle performance taking the possible thermal loss into account has been carried out. The cycle COP can be over 1 if a concentrating collector is used.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 3","pages":"Pages 179-187"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90017-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74372808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90015-3
B.K. Gupta, R.P. Sharma
{"title":"Effect of finite boundary layer on the ionization instability in non-equilibrium MHD generators","authors":"B.K. Gupta, R.P. Sharma","doi":"10.1016/0013-7480(78)90015-3","DOIUrl":"10.1016/0013-7480(78)90015-3","url":null,"abstract":"<div><p>This paper presents an investigation of the effect of boundary layer on the ionization instability in non-equilibrium MHD plasmas: the Boltzmann transfer equation has been employed in the analysis. It is concluded that the effect of finite boundary layer thickness is to reduce the growth rate. Moreover, the growth rate is not constant across the channel cross-section: it is maximum on the axis and decreases away from the axis. These effects are more pronounced at higher Hall parameters. Further, it is shown that the effect of changing the flow velocity of the gas on the growth rate is more important than the effect of changing the wall temperature.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 3","pages":"Pages 163-170"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90015-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73954797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The advanced thermionic converter with microwave power as an auxiliary ionization source","authors":"C.N. Manikopoulos , M. Hatziprocopiou , H.S. Chiu , D.T. Shaw","doi":"10.1016/0013-7480(78)90016-5","DOIUrl":"10.1016/0013-7480(78)90016-5","url":null,"abstract":"<div><p>In the search for auxillary sources of ionization for the advanced thermionic converter plasma, as required for terrestial applications, the use of externally applied microwave power is considered. The present work is part of the advanced model thermionic converter development research currently performed at the laboratory for Power and Environmental Studies at SUNY/Buffalo. Microwave power in the frequency range 1–3 GHz is used to externally pump a thermionic converter and the results are compared to the theoretical model proposed by H. Lam [1] in describing the thermionic converter plasma. The electron temperature of the plasma is found to be raised considerably by effective microwave heating which results in the disappearance of the double sheath ordinarily erected in front of the emitter. The experimental data agree satisfactorily with theory in the low current region.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 3","pages":"Pages 171-178"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90016-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87596208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90084-0
Herbert E. Klei
{"title":"Economic analysis of heat transmission from low temperature geothermal sources","authors":"Herbert E. Klei","doi":"10.1016/0013-7480(78)90084-0","DOIUrl":"10.1016/0013-7480(78)90084-0","url":null,"abstract":"<div><p>The costs of transmitting low temperature geothermal water (150–300°F) was evaluated as a function of well head temperature, distance between the geothermal field and the energy usage site, and total energy demand of the system. It was found that transmission was not practical beyond 2–3 miles and that economies of scale are very important. Energy demand should be above 50 × 10<sup>6</sup> B.t.u/hr. For drying operations located within a 3 mile radius of a 270°F geothermal source, energy costs are within the $1.50–$3.00/10<sup>6</sup> B.t.u. range and could become competitive.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 1","pages":"Pages 17-23"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90084-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72929606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90010-4
A.A. De Boer, J. Smit
{"title":"Energy storage: Economics and fuel conservation","authors":"A.A. De Boer, J. Smit","doi":"10.1016/0013-7480(78)90010-4","DOIUrl":"10.1016/0013-7480(78)90010-4","url":null,"abstract":"<div><p>This article presents an analysis of the economic aspects of energy storage for an electric utility. It is shown that it is possible to optimize the storage economics. A relation between the efficiency of an energy storage device and the possible fuel saving is derived. Fuel savings are only obtainable with high efficiency energy storage systems.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 3","pages":"Pages 121-125"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90010-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76208613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90085-2
Li-Ting Chen
{"title":"A heat driven mobile refrigeration cycle analysis","authors":"Li-Ting Chen","doi":"10.1016/0013-7480(78)90085-2","DOIUrl":"10.1016/0013-7480(78)90085-2","url":null,"abstract":"<div><p>This paper extends the theory of a thermal compressor (ejector) to refrigeration applications in mobile use. A study of the proposed R-113 cycle has been carried out. It showed that the engine waste heat for a 2000 c.c. automobile could produce 2.34 tons cooling effect while the power consumption was just 0.06 HP.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 1","pages":"Pages 25-29"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90085-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76465088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90081-5
J.O'M. Bockris, L. Handley
{"title":"On photo fuel","authors":"J.O'M. Bockris, L. Handley","doi":"10.1016/0013-7480(78)90081-5","DOIUrl":"10.1016/0013-7480(78)90081-5","url":null,"abstract":"<div><p>The direct solar conversion of water into hydrogen and oxygen gas is presented as a major energy alternative. Present efficiencies are only 0.1% with at least 5–10% needed for commercial utility. The most important research goal is the attainment of a stable photoanode with a small energy gap (0.75–1.5 eV). Photocorrosion and its possible prevention is discussed.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 1","pages":"Pages 1-8"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90081-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"95475758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90014-1
M. Ishikawa, Y. Hattori
{"title":"Effects of position of output electrodes in entrance region of open-cycle diagonal type MHD generator","authors":"M. Ishikawa, Y. Hattori","doi":"10.1016/0013-7480(78)90014-1","DOIUrl":"10.1016/0013-7480(78)90014-1","url":null,"abstract":"<div><p>Effects of position of output electrodes in open-cycle diagonal type MHD generators are investigated by a two-dimensional analysis with local nonequilibrium ionization. Arranging output electrodes where the magnetic field reduces to 10–40% decreases the current concentration on output electrodes, ballast resistance required, and eddy current in end-region. The output power in end-region varies with their position to some extent and has a peak at an attenuating point of magnetic field.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 3","pages":"Pages 155-161"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90014-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"101310807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy ConversionPub Date : 1978-01-01DOI: 10.1016/0013-7480(78)90072-4
V. Thiagarajan
{"title":"The ion fly-wheel effect on the electro-thermal instability in non-equilibrium MHD hall disc generators","authors":"V. Thiagarajan","doi":"10.1016/0013-7480(78)90072-4","DOIUrl":"10.1016/0013-7480(78)90072-4","url":null,"abstract":"<div><p>The electro-thermal instability has so far been studied in collisional time scales, neglecting the effects of the charge separation field which follows any perturbation in a non-equilibrium plasma used as the operating fluid in a closed-cycle MHD generator. In this paper, the electro-thermal instability has been treated in an approximately collisionless time scale. With the appearance of the charge separation field, some energy will be transferred from the electrons to the ions during the process of restoration of the charge neutrality. Part of the energy thus transferred can be stored in the azimuthal translational mode of the ions (referred to in this paper as “the ion fly-wheel”, for simplicity); the energy thus stored will be transferred to the neutrals by ion-neutral collisions, without triggering further instabilities. There will be a gain in the critical Hall parameter, since the energy causing the instability is now reduced. The conditions for the transfer of energy from the electrons to the ion fly-wheel are ideally available in a non-equilibrium MHD Hall disc generator operating with flow symmetry. Approximate calculations predict that the critical Hall parameter can be raised from 2 to 3 by virtue of the ion fly-wheel effect, if the pressure gradient is about 2 bars/m for the case of a potassium seeded argon plasma with <em>T</em><sub><em>e</em></sub> = 2500 K and <em>B</em> = 3 tesla.</p></div>","PeriodicalId":100466,"journal":{"name":"Energy Conversion","volume":"18 2","pages":"Pages 53-56"},"PeriodicalIF":0.0,"publicationDate":"1978-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0013-7480(78)90072-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"97580915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}