Solar & Wind Technology最新文献_第9页

Digital parameter-adaptive control for a solar concentrator 太阳能聚光器数字参数自适应控制

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90075-D

G. Stavrakakis, G. Kapsiotis, M. Santamouris

引用次数: 0

The potential for increasing the efficiency of solar cells in hybrid photovoltaic/thermal concentrating systems by using beam splitting 在混合光电/热聚光系统中使用光束分裂提高太阳能电池效率的潜力

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90082-D

M. Hamdy, D. Osborn

引用次数: 13

Energy in Swaziland: Options for increased self-reliance at individual and national level 斯威士兰的能源:在个人和国家层面提高自力更生的选择

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90017-V

Anne E. Wheldon

引用次数: 4

Electricity and heat cogeneration from biomass fuels: A case study in Fiji 利用生物质燃料热电联产:斐济的案例研究

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90007-O

S.B. Prasad

{"title":"Electricity and heat cogeneration from biomass fuels: A case study in Fiji","authors":"S.B. Prasad","doi":"10.1016/0741-983X(90)90007-O","DOIUrl":"10.1016/0741-983X(90)90007-O","url":null,"abstract":"<div><p>Electricity supply to rural and remote areas in developing countries is a major problem because of the large costs, population distribution, and inaccessibility of remote communities to grid extension. In Fiji, less than 40% of the rural population has access to grid electricity, most of these in the two major islands. The potential for the generation of electricity through burning biomass fuels such as sawmill and crop wastes is substantial, particularly for areas close to sawmills and forest logging sites. After establishing the availability and costs of various biomass fuels in Fiji, a system for the utilization of such wastes is described. The 25 kW rural area power supply (RAPS) system consists of a simple, low-cost furnace/boiler to generate steam which powers a simple, reciprocating steam engine to drive an alternator to supply the load. With the existence of an adequate thermal load (such as for crop drying or for hot water), an electricity/heat cogeneration system can be installed with the engine exhaust steam supplying the heat load. The advantages of such a supply system are discussed along with problems and system economics in comparison to an existing wood-fired cogeneration system.</p></div>","PeriodicalId":101171,"journal":{"name":"Solar & Wind Technology","volume":"7 1","pages":"Pages 25-29"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0741-983X(90)90007-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82272259","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}

引用次数: 10

Verification of two models to predict global radiation on a horizontal surface 两种预测水平面上全球辐射模式的验证

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90045-4

I. Foyo-Moreno, Y. Castro-Diez, F.J. Olmo, J.I. Jimenez

引用次数: 0

Comparison of the solar-operated two-stage and single-stage LiBrH2O absorption cycles 太阳能驱动两级和单级LiBrH2O吸收循环的比较

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90021-S

Abdullah M. Al-Turki, Moustafa M. Elsayed

{"title":"Comparison of the solar-operated two-stage and single-stage LiBrH2O absorption cycles","authors":"Abdullah M. Al-Turki, Moustafa M. Elsayed","doi":"10.1016/0741-983X(90)90021-S","DOIUrl":"10.1016/0741-983X(90)90021-S","url":null,"abstract":"<div><p>Analysis of a solar operated two-stage LiBrH<sub>2</sub>O cycle is presented. The cycle has the advantages that it can operate at a higher ambient temperature and at a lower generator temperature than those required by the single stage cycle. The performance of the cycle is predicted and compared to the performance of the single stage cycle at various design conditions. Four design parameters are identified to control the performance of the cycle. These parameters are the heat sink temperature, the evaporator temperature, the generator temperature, and the intermediate pressure. Numerical correlations are developed to specify the minimum allowable sink temperature, the minimum and maximum allowable generator temperature and the coefficient of performance of both the single-stage and the two-stage cycles. By defining a system thermal ratio for the combined absorption machine and a flat plate collector, the performances of the integrated systems are evaluated and compared when using both cycles. Conditions at which the performance of the solar operated two-stage cycle is superior to that of the solar operated single stage cycle are defined.</p></div>","PeriodicalId":101171,"journal":{"name":"Solar & Wind Technology","volume":"7 4","pages":"Pages 355-366"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0741-983X(90)90021-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91420199","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}

引用次数: 2

Photovoltaic effect of chemically deposited Cu2S/CSi heterojunctions 化学沉积Cu2S/CSi异质结的光伏效应

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90073-B

A.J. Varkey

引用次数: 2

The iso-radiation map for Algeria 阿尔及利亚的等辐射图

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90064-9

N. Messen

引用次数: 3

Comparison between measured and calculated diurnal variations of wind speeds in northeast Baghdad 巴格达东北部风速日变化测量值与计算值的比较

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90033-X

A.M. Hasson, N.I. Al-Hamadani, A.A. Al-Karaghouli

引用次数: 5

The applicability of hourly solar radiation models to Amman, Jordan 每小时太阳辐射模式在约旦安曼的适用性

Solar & Wind Technology Pub Date : 1990-01-01 DOI: 10.1016/0741-983X(90)90032-W

M.A. Alsaad

{"title":"The applicability of hourly solar radiation models to Amman, Jordan","authors":"M.A. Alsaad","doi":"10.1016/0741-983X(90)90032-W","DOIUrl":"https://doi.org/10.1016/0741-983X(90)90032-W","url":null,"abstract":"<div><p>Hourly and daily global and diffuse solar radiation data measured on a horizontal surface during the period 1983–1987 for Amman, Jordan are studied and analyzed. The observed ratios between monthly mean hourly to daily global and diffuse radiation are determined. The applicability of various radiation models for the estimation of hourly global and diffuse radiation from daily values of global and diffuse radiation, respectively, for Amman is tested against measured data. The normal distribution curve suggested by Jain [<em>Solar Wind Technol.</em><strong>5</strong>, 7 (1988)] is found suitable for predicting hourly global radiation for Amman and it has shown excellent agreement with the observed values amobgst all other models used. The classical equation of Liu and Jordan [<em>Solar Energy</em><strong>4</strong>, 1 (1960)] produced satisfactory results of hourly diffuse radiation which are much closer to the observed values as compared to that obtained using other suggested models. Comparison between results obtained using various radiation models is made by calculating the root mean squared error, RMSE, for each model used.</p></div>","PeriodicalId":101171,"journal":{"name":"Solar & Wind Technology","volume":"7 4","pages":"Pages 473-480"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0741-983X(90)90032-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91760552","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}

引用次数: 8