Energy in Agriculture最新文献_第7页

Energy analysis of lateral move irrigation machines 横向移动灌溉机的能量分析

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90031-8

Ilan Amir , Marshall J. McFarland, Donald L. Reddell

引用次数: 3

Simulation and analysis of soil heat storage systems for a solar greenhouse. II. Simulation 太阳能温室土壤储热系统的模拟与分析。二、模拟

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90027-6

T. Boulard, A. Baille

引用次数: 13

Psychrophilic anaerobic digestion of screened dairy manure 筛选后的牛粪的嗜冷厌氧消化

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90032-X

K. Lo, P. Liao

引用次数: 12

Development of greenhouse solar systems for bulk tobacco curing and plant production 用于散装烟草腌制和植物生产的温室太阳能系统的开发

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90026-4

B.K. Huang, C.G. Bowers Jr.

{"title":"Development of greenhouse solar systems for bulk tobacco curing and plant production","authors":"B.K. Huang, C.G. Bowers Jr.","doi":"10.1016/0167-5826(86)90026-4","DOIUrl":"https://doi.org/10.1016/0167-5826(86)90026-4","url":null,"abstract":"<div><p>Among many farm crops, bright leaf tobacco is the most energy- and labor-intensive crop. The greenhouse solar system (solar bulk-curing/greenhouse system, or solar barn) was developed to provide multiple-use facilities for year-round solar energy utilization to save fossil fuels in tobacco curing and plant production and to facilitate the total mechanization of tobacco culture. Two types of full-size greenhouse solar systems, the load-supporting wall design and the shell design, both utilizing the thermal envelope concept, were designed and constructed for solar bulk-curing of tobacco, growing transplants and horticultural crops under controlled environment, and aiding automation of transplanting operations.</p><p>Full-scale field tests of solar bulk curing showed that the fuel savingswere consistantly improved from 37% in 1975 to 51% in 1978 for this solar bulk-curing system as compared with a conventional bulk-curing barn as a control. The feasibility of the system to save energy by using solar energy as a first priority source was significantly demonsrated. Three-year greenhouse and field tests showed that high germination rate of 95–97% with excellent emergence frequency was obtained for tobacco seeds under the controlled environment provided by the greenhouse solar system. In general, the containerized transplants from greenhouse solar system significantly exceeded the conventional bare-root transplant in growth, leaf-quality and yield.</p></div>","PeriodicalId":100470,"journal":{"name":"Energy in Agriculture","volume":"5 4","pages":"Pages 267-284"},"PeriodicalIF":0.0,"publicationDate":"1986-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5826(86)90026-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72066791","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: 7

Large-scale ethanol production from corn and grain sorghum and improving conversion technology 玉米和高粱大规模生产乙醇及其转化技术的改进

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90029-X

Anthony F. Turhollow , Earl O. Heady

{"title":"Large-scale ethanol production from corn and grain sorghum and improving conversion technology","authors":"Anthony F. Turhollow , Earl O. Heady","doi":"10.1016/0167-5826(86)90029-X","DOIUrl":"https://doi.org/10.1016/0167-5826(86)90029-X","url":null,"abstract":"<div><p>A linear programming model is used to assess the impacts of large-scale ethanol production from corn and grain sorghum on U.S. agriculture. Annual ethanol production of 22.7 and 45.4sx10<sup>9</sup> L, corresponding to approximately 6 and 12%, respectively, of U.S. gasoline consumption is examined. Current conversion technology allows 387 L of ethanol to be obtained from a metric tonne of corn or grain sorghum, and more advanced conversion technology would allow up to 447 L. U.S. agriculture has the capacity to produce both food and large quantities of ethanol. If large-scale ethanol production occurs, the major change in production is the substitution of corn for soybeans in the north central states. With current ethanol production technology, per unit production cost increases for individual crops range from 3 to 12% and from 6 to 30% for annual ethanol production of 22.7 and 45.4×10<sup>9</sup> L, respectively. Advanced ethanol production technology allows crop production costs to be reduced significantly, about 100o million dollars if 45.4×10<sup>9</sup> L of ethanol are produced.</p></div>","PeriodicalId":100470,"journal":{"name":"Energy in Agriculture","volume":"5 4","pages":"Pages 309-316"},"PeriodicalIF":0.0,"publicationDate":"1986-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5826(86)90029-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72103672","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: 15

Large-scale ethanol production from corn and grain sorghum and improving conversion technology 以玉米和高粱为原料大规模生产乙醇并改进转化技术

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90029-X

A. Turhollow, E. Heady

引用次数: 15

Integrated rural energy planning 农村能源综合规划

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90034-3

William Lockeretz

引用次数: 0

Simultaneous water adsorption from ethyl alcohol and oil extraction from corn 乙醇对水的同时吸附和玉米油的同时提取

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90028-8

G.H. Robertson, A.E. Pavlath

{"title":"Simultaneous water adsorption from ethyl alcohol and oil extraction from corn","authors":"G.H. Robertson, A.E. Pavlath","doi":"10.1016/0167-5826(86)90028-8","DOIUrl":"https://doi.org/10.1016/0167-5826(86)90028-8","url":null,"abstract":"<div><p>Energy-efficient dewatering of fermentation ethyl alcohol is essential whether the alcohol is for fuel or chemical use. Adsorption of water on dried grain such as corn is one method that can meet this objective. Adsorption of water from liquid solutions containing 88–95 wt% ethyl alcohol onto fixed beds of unrefined corn is described here. Water adsorption capacity was 40–50% of the theoretical value for perfectly selective adsorption of water, but still adequate so that the water-saturated grain used in adsorption could also be feedstock to the fermentation, Cincurrent with the dewatering of the ethyl-alcohol by the corn grain, curde corn oil was extracted by the ethyl alcohol. When the capacity of the grain for producing anhydrous alcohol was reached, up to 80% of the oil had been extracted. Benefits include improved energy efficiency for the complete conversion of grain to anhydrous ethyl-alcohols as compared to existing methods, a 7% gain in the fuel value of products relative to conversions where no oil is recovered, and a potential for increased product diversity in small-scale operations where only ethyl alcohol is usually produced.</p></div>","PeriodicalId":100470,"journal":{"name":"Energy in Agriculture","volume":"5 4","pages":"Pages 295-308"},"PeriodicalIF":0.0,"publicationDate":"1986-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5826(86)90028-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72066790","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: 7

A procedure to evaluate energy contribution of biomass 一种评估生物质能源贡献的程序

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90030-6

Guiseppe Pellizzi

引用次数: 6

Simulation and analysis of soil heat storage systems for a solar greenhouse. II. Simulation 日光温室土壤蓄热系统的模拟与分析。2模拟

Energy in Agriculture Pub Date : 1986-12-01 DOI: 10.1016/0167-5826(86)90027-6

T. Boulard, A. Baille

引用次数: 13