Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90255-9
{"title":"8505151 Stirling engine with air working fluid","authors":"","doi":"10.1016/0198-7593(86)90255-9","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90255-9","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 5","pages":"Page vii"},"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)90255-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137352503","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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90223-7
A.A. Ballut
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.
{"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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90006-8
V.K. Gupta ∗
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.
{"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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90105-0
{"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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90073-1
A.Nilüfer Eǧrican, Ahmet Karakas
A virtually unlimited quantity of heat is available as solar energy. Conversion of this heat energy to power or air conditioning, however, is a difficult and costly process. Only two practical means of solar cooling are presently state-of-the-art. These are by use of the Rankine cycle/vapor compression cycle (RC/VCC) and the absorption refrigeration cycle. Considerable interest is currently centered around RC/VCC systems. RC/VCC solar cooling systems convert collected solar heat into a cooling effect. This is accomplished at the site of the installation by using the Rankine cycle to generate the shaft work required to drive a vapor compression cycle. In this present study, the second law analysis is given, the maximum reversible work, lost work and availability for each component are calculated. The use of lost work or irreversibility and availability analysis in a real thermodynamic and heat transfer problem is very important in at least two regards. The first one is that in most cases accomplishing a real problem with the less irreversibility is directly proportional to the less cost. The second one is that availability is one of our natural resources. The conservation and effective use of availability reserves result in the decrease irreversibilities.
{"title":"Second law analysis of a solar powered Rankine cycle/vapor compression cycle","authors":"A.Nilüfer Eǧrican, Ahmet Karakas","doi":"10.1016/0198-7593(86)90073-1","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90073-1","url":null,"abstract":"<div><p>A virtually unlimited quantity of heat is available as solar energy. Conversion of this heat energy to power or air conditioning, however, is a difficult and costly process. Only two practical means of solar cooling are presently state-of-the-art. These are by use of the Rankine cycle/vapor compression cycle (RC/VCC) and the absorption refrigeration cycle. Considerable interest is currently centered around RC/VCC systems. RC/VCC solar cooling systems convert collected solar heat into a cooling effect. This is accomplished at the site of the installation by using the Rankine cycle to generate the shaft work required to drive a vapor compression cycle. In this present study, the second law analysis is given, the maximum reversible work, lost work and availability for each component are calculated. The use of lost work or irreversibility and availability analysis in a real thermodynamic and heat transfer problem is very important in at least two regards. The first one is that in most cases accomplishing a real problem with the less irreversibility is directly proportional to the less cost. The second one is that availability is one of our natural resources. The conservation and effective use of availability reserves result in the decrease irreversibilities.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 2","pages":"Pages 135-141"},"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)90073-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90006371","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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90225-0
R.S. Beniwal, Ramvir Singh
Double diffusive (salt and heat) fluid systems with linear gradients with constant thermophysical properties have been studied. A numerical model has been developed to describe the relation between temperature and salinity gradients in salt gradient solar ponds. Stability conditions have been observed from measurements of temperature and salinity distributions over the depth of the pond. We find agreement of the analytical results with the experimental observations made on a laboratory solar pond.
{"title":"Stability analysis for a salt gradient solar pond","authors":"R.S. Beniwal, Ramvir Singh","doi":"10.1016/0198-7593(86)90225-0","DOIUrl":"10.1016/0198-7593(86)90225-0","url":null,"abstract":"<div><p>Double diffusive (salt and heat) fluid systems with linear gradients with constant thermophysical properties have been studied. A numerical model has been developed to describe the relation between temperature and salinity gradients in salt gradient solar ponds. Stability conditions have been observed from measurements of temperature and salinity distributions over the depth of the pond. We find agreement of the analytical results with the experimental observations made on a laboratory solar pond.</p></div>","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"6 5","pages":"Pages 381-388"},"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)90225-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90365834","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}
Pub Date : 1986-01-01DOI: 10.1016/0198-7593(86)90070-6
R. S. Beniwal, Ramvir Singh, N. Saxena, R. C. Bhandari
{"title":"Characterisation and heat losses from a laboratory salt gradient solar pond","authors":"R. S. Beniwal, Ramvir Singh, N. Saxena, R. C. Bhandari","doi":"10.1016/0198-7593(86)90070-6","DOIUrl":"https://doi.org/10.1016/0198-7593(86)90070-6","url":null,"abstract":"","PeriodicalId":100786,"journal":{"name":"Journal of Heat Recovery Systems","volume":"3 1","pages":"105-115"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91321384","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号