Journal of Heat Recovery Systems最新文献

{"title":"4532720 Drying process and its apparatus utilizing a refrigeration cycle","authors":"","doi":"10.1016/0198-7593(86)90089-5","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90089-5","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 2","pages":"Page iv"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90089-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136439197","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":"Apparatus to manufacture heat exchanger finned tube","authors":"JacquesAV Benard","doi":"10.1016/0198-7593(86)90205-5","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90205-5","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90205-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72212764","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":"4536211 Waste gas circulation method and system for sintering apparatus","authors":"","doi":"10.1016/0198-7593(86)90105-0","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90105-0","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 2","pages":"Page ix"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90105-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89994987","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":"Numerical computation of economic cooling water rate for multi-stage azeotropic refrigerating systems","authors":"V.K. Gupta ∗","doi":"10.1016/0198-7593(86)90006-8","DOIUrl":"10.1016/0198-7593(86)90006-8","url":null,"abstract":"<div><p>With a view to conserve high grade electrical energy the use of azerotropes in a multi-stage refrigerating system is quite attractive. Economic cooling water rates that minimize the total operating cost and yield maximum coefficient of performance are searched out numerically for two-stage refrigerating systems that operate azeotropes R-500 and R-502. Main design quantities of interest such as inter-stage and condensing temperatures, coefficient of performance etc. are obtained at various optimal points pertaining to numerous feasible operating conditions. The results are presented graphically as well as in tabular forms for ready reference to design and refrigerating engineers. The effects of various controlling parameters/variables on the optimum design quantities are also analysed.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 3","pages":"Pages 225-234"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90006-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80271235","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":"Heat recovery analysis of an existing crude distillation unit","authors":"A.A. Ballut","doi":"10.1016/0198-7593(86)90223-7","DOIUrl":"10.1016/0198-7593(86)90223-7","url":null,"abstract":"<div><p>The cost of energy has become a significant factor in the design of new refineries as well as in retrofitting existing designs. Process heat accounts for about 65% of an average refinery energy consumption. As such, reducing heater duties represents the single most important energy saving method. One way of reducing heater duty is the recovery of more process heat and thus increase heater inlet temperature. Greater energy pick up, off-course, is subject to both thermodynamic as well as economic constraints.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 5","pages":"Pages 361-367"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90223-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84406290","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":"Developments in geothermal energy in Mexico—Part three: Economics of wellhead versus central power plants","authors":"Gerardo Hiriart Le Bert","doi":"10.1016/0198-7593(86)90002-0","DOIUrl":"10.1016/0198-7593(86)90002-0","url":null,"abstract":"<div><p>A comparative economic analysis has been made between a single 110 MW_e plant using concentrated steam from various wells, condensers and extractors for non-condensable gases to maximize its efficiency, and a system of 22 units, each with a capacity of 5 MW_e, with the steam discharged at atmospheric pressure.</p><p>The costs used for this comparison have been obtained from experience in Mexican geothermal fields at both Cerro Prieto and Los Azufres. It is concluded that the second alternative is very attractive and should be analyzed in detail for each project where both the production of steam and the generation of electricity are contemplated.</p><p>The results of this analysis were presented at a Geothermal Conference and Workshop held at San Diego, California, U.S.A. in July 1985 sponsored by the Instituto de Investigaciones Electricas, Cuernavaca, Mexico and the Electric Power Research Institute, Palo Alto, California, U.S.A.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 3","pages":"Pages 191-200"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90002-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83494299","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":"Heat recovery from a spray dryer using a run-around coil system","authors":"","doi":"10.1016/0198-7593(86)90169-4","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90169-4","url":null,"abstract":"<div><p>This project at Clayton Aniline Co. (CAC) demonstrates the use of a finned-tube heat exchanger and run-around coil system to recovery heat from a spray-dryer exhaust to pre-heat the inlet air. It was originally envisaged that this would reduce the energy consumption of the dryer by 12%, equivalent to 9.4 therms/h.</p><p>Funding was granted by the Energy Efficiency Office of the Department of Energy under the Energy Efficiency Demonstration Scheme for the installation and monitoring of the project. This project is one of a package of demonstrations for heat recovery in spray dryers. A parallel project at ABM Chemicals uses a glass tube heat exchanger to recover energy from the dryer exhaust, and a further project at BIP Chemicals demonstrates the use of a separate heat source to pre-heat the dryer inlet air.</p><p>Within the U.K., widespread adoption of heat recovery on spray dryers would lead to energy savings of 2,500 TJ/yr or 100,000 tonnes of coal equivalent (tce)/yr. It is estimated that, within the next 5 yr, around 20% of this will be achieved, resulting in savings of around 20,000 tce/yr, worth £1.6 million yr.</p><p>The heat recovery system was installed at CAC in July 1982. Unfortunately, due to the built-up of solids on the fins, the unit had to be removed after only three days operation. The equipment was therefore modified and the changes included:</p><p>reducing the number of fins from from 8/in. to 4/in.: this reduction in are meand a 30% loss of potential savings;</p><p>improving the exchanger spray wash system by including an additional row of nozzles directed towards the centre of the unit.</p><p>The replacement exchanger was installed in July 1984 and, since that time, has operated satisfactoryly. It has not adversely affected the operation of the spray dryer, as the problems of excessive solids deposition and ineffective washing have now been overcome.</p><p>Detailed monitoring has not yet been completed, but preliminary information and design calculations estimate that for the modified exchanger, energy savings averaging 6.5 therms/h (191 kW) are probable. These are worth about £17,200 to CAC and hence the payback period on the installation cost of £35,200 is 2 yr.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 1","pages":"Pages 33-38"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90169-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72283006","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":"Adsorption heat pumps","authors":"Semra Ülkü","doi":"10.1016/0198-7593(86)90113-X","DOIUrl":"10.1016/0198-7593(86)90113-X","url":null,"abstract":"<div><p>Adsorption heat pumps have sparked considerable attention in recent years. In this paper general outlines for adsorption heat pumps are presented and the results of the work related to an adsorption heat pump which has been built and tested are given. The hermetically sealed heat pump system mainly consists of a packed bed of adsorbent, a condenser and an evaporator. A natural zeolite and water vapour pair is used as the working material. Heat of adsorption and heat of condensation are utilized for heating and heat of evaporation is utilized for cooling purposes.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 4","pages":"Pages 277-284"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90113-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81742653","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":"4535606 High efficiency air cycle air conditioning system","authors":"","doi":"10.1016/0198-7593(86)90103-7","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90103-7","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 2","pages":"Pages viii-ix"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90103-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91608663","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":"Determination of heat transfer coefficient in a short-tube economiser operating in the transition region","authors":"O. Ta'eed,&nbsp;B.M. Gibbs","doi":"10.1016/0198-7593(86)90069-X","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90069-X","url":null,"abstract":"<div><p>An attempt to experimentally and theoretically analyse the performance of an industrial short-tube (<span><math><mtext>L/D &lt; 25</mtext></math></span>) economiser operating within transitional flows (<span><math><mtext>2000 &lt; Re &lt; 10,000</mtext></math></span>) led to the development of a successful algorithm which predicted the gas-side heat transfer coefficient in this regime within <span><math><mtext>± 15%</mtext></math></span>. By using the successive summation technique the algorithm combined previous correlations for long-tube transition heat transfer with that for a developing velocity profile in laminar flow. The common procedure of extrapolating into the transition region by processing standard turbulent and laminar correlations with effectiveness was found to be grossly erroneous (+65–120-%).</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 2","pages":"Pages 93-104"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0198-7593(86)90069-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91649694","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}