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Thermodynamic design data for absorption heat pump systems operating on monomethylamine-water. Part I: Cooling 单甲基胺-水吸收式热泵系统的热力学设计数据。第一部分:冷却
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90066-7
I. Pilatowsky , W. Rivera , R. Best , F.A. Holland
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引用次数: 0
A freon-ammonia comparison applied in a mixed power cycle 混合动力循环中氟利昂-氨的比较
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90070-5
V.E. Styliaras
{"title":"A freon-ammonia comparison applied in a mixed power cycle","authors":"V.E. Styliaras","doi":"10.1016/0890-4332(95)90070-5","DOIUrl":"10.1016/0890-4332(95)90070-5","url":null,"abstract":"<div><p>The thermal efficiency of a cycle consisting of a combination of a Rankine power cycle and an absorption cycle has been examined with respect to upper cycle temperature and the solution used.</p><p>Freon 22-DME. TEG and ammonia-NaSCN have been selected for comparison. An improvement of the Rankine cycle is expected. This improvement is higher for substances having a high latent heat. Although there is a strong dependence on the substance used in Rankine cycles, no considerable effect seems to exist in the combined cycle.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 601-603"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90070-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80905871","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: 1
Rotary heat pump driven by natural gas 燃气驱动的旋转式热泵
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90064-0
S.B. Riffat, A.P. Warren, R.A. Webb
{"title":"Rotary heat pump driven by natural gas","authors":"S.B. Riffat,&nbsp;A.P. Warren,&nbsp;R.A. Webb","doi":"10.1016/0890-4332(95)90064-0","DOIUrl":"10.1016/0890-4332(95)90064-0","url":null,"abstract":"<div><p>This paper describes the development of an efficient cycle based upon the rotation of a hybrid absorption/recompression arrangement. This novel refrigeneration cycle combines a mechanical compressor and absorption system, together with process intensification which exploits radial flow driven by centrifugal force. The system is driven by a gas-engine, in order to utilise the waste heat produced by the engine. The developed cycle avoids the use of CFCs (chlorofluorocarbons). Performance calculations are reported for a cycle using water and lithium bromide (H<sub>2</sub>O/LiBr) and water sodium hydroxide-potassium hydroxide-caesium hydroxide (H<sub>2</sub>O/NaOHKOHCsOH) as the working fluid. For each of the combinations, the refrigerant is water. This paper also discusses various cycles using different configurations in order to assess their feasibility.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 545-554"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90064-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74857905","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: 13
Effect of inlet flow distortions on fan performance in forced draught air-cooled heat exchangers 进气气流畸变对强制通风风冷换热器风扇性能的影响
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90065-9
C.A. Salta, D.G. Kröger
{"title":"Effect of inlet flow distortions on fan performance in forced draught air-cooled heat exchangers","authors":"C.A. Salta,&nbsp;D.G. Kröger","doi":"10.1016/0890-4332(95)90065-9","DOIUrl":"10.1016/0890-4332(95)90065-9","url":null,"abstract":"<div><p>Forced flow air-cooled heat exchangers (ACHEs) as found in the petro-chemical, process and power industries use fans arranged in single or multiple fan rows to force air over finned tube bundles. Any flow disturvances or distortions experienced at the inlets of these fans tend to reduce the effectiveness of the ACHE.</p><p>The reduction of the air flow rate through ACHE models having different numbers of fan rows is investigated experimentally. By varying the distance between the fan platform and the ground level, significant changes in air flow rate are observed and the results are correlated by an empirical relation which can be applied to the design of ACHEs. Fans along the edge of an ACHE are most affected by the distorted inlet air flow pattern. Furthermore, the influence of a walkway along the edge of the fan platform on the air flow rate through an ACHE is also investigated.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 555-561"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90065-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83938400","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: 67
A new design for an air-source heat pump using a ternary mixture for cold climates 一种用于寒冷气候的三元混合空气源热泵的新设计
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90062-4
S.M. Sami, P.J. Tulej
{"title":"A new design for an air-source heat pump using a ternary mixture for cold climates","authors":"S.M. Sami,&nbsp;P.J. Tulej","doi":"10.1016/0890-4332(95)90062-4","DOIUrl":"10.1016/0890-4332(95)90062-4","url":null,"abstract":"<div><p>This paper presents a performance analysis of the newly developed Combined Cycle Fully Integrated Air/Air Heat Pump (CFIA). The CFIA System combines the proven efficiencies of heat pump technologies with heat regenerative technologies to bring the most efficient heating/cooling system with capabilities to produce domestic hot water. The CFIA uses environmentally sound refrigerant blends.</p><p>Extensive laboratory testing showed that the CFIA yielded an impressive coefficient of performance, higher than 2.7 at 15°C outside temperature. Furthermore, field testing revealed an average COP of 2.4 at −13.5°C outside temperature.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 521-529"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90062-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80558132","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: 27
Thermodynamic design data for absorption heat pump systems operating on monomethylamine-water. Part II: Heating 单甲基胺-水吸收式热泵系统的热力学设计数据。第二部分:加热
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90067-5
I. Pilatowsky , W. Rivera , R. Best , F.A. Holland
{"title":"Thermodynamic design data for absorption heat pump systems operating on monomethylamine-water. Part II: Heating","authors":"I. Pilatowsky ,&nbsp;W. Rivera ,&nbsp;R. Best ,&nbsp;F.A. Holland","doi":"10.1016/0890-4332(95)90067-5","DOIUrl":"10.1016/0890-4332(95)90067-5","url":null,"abstract":"<div><p>The Gibbs phase rule and thermodynamic properties of the working pair limit the choice of operating temperatures. For any combination of temperatures, the concentrations in the absorber and the generator and hence the flow ratios are fixed. For any particular working pair, the coefficient of performance is related to the flow ratio.</p><p>Tables of possible combinations of operating temperatures and concentrations, including flow ratios, Carnot coefficients of performance and enthalpy-based coefficients of performance have been presented for monomethylamine-water absorption systems for heating. The interaction of operating temperatures have been illustrated graphically.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 571-581"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90067-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77775878","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: 5
Heat exchanger concerted action 热交换器协同作用
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90071-3
{"title":"Heat exchanger concerted action","authors":"","doi":"10.1016/0890-4332(95)90071-3","DOIUrl":"https://doi.org/10.1016/0890-4332(95)90071-3","url":null,"abstract":"","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 605-606"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90071-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136551591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamic design data for absorption heat pump systems operating on monomethylamine-water. Part III: Simultaneous cooling and heating 单甲基胺-水吸收式热泵系统的热力学设计数据。第三部分:同时冷却和加热
Heat Recovery Systems and CHP Pub Date : 1995-08-01 DOI: 10.1016/0890-4332(95)90068-3
I. Pilatowsky , W. Rivera , R. Best , F.A. Holland
{"title":"Thermodynamic design data for absorption heat pump systems operating on monomethylamine-water. Part III: Simultaneous cooling and heating","authors":"I. Pilatowsky ,&nbsp;W. Rivera ,&nbsp;R. Best ,&nbsp;F.A. Holland","doi":"10.1016/0890-4332(95)90068-3","DOIUrl":"https://doi.org/10.1016/0890-4332(95)90068-3","url":null,"abstract":"<div><p>The Gibbs phase rule and thermodynamic properties of the working pair limit the choice of operating temperatures. For any combination of temperatures, the concentrations in the absorber and the generator and hence the flow ratios are fixed. For any particular working pair, the coefficient of performance is related to the flow ratio.</p><p>Tables of possible combinations of operating temperatures and concentrations, including flow ratios, Carnot coefficients of performance and enthalpy-based coefficients of performance have been presented for monomethylamine-water absorption systems for simultaneous cooling and heating. The interaction of operating temperatures have been illustrated graphically.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 6","pages":"Pages 583-589"},"PeriodicalIF":0.0,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90068-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136551592","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: 0
Electrohydrodynamic enhancement of heat transfer and fluid flow 电流体力学强化传热和流体流动
Heat Recovery Systems and CHP Pub Date : 1995-07-01 DOI: 10.1016/0890-4332(95)90050-0
P.H.G. Allen , T.G. Karayiannis
{"title":"Electrohydrodynamic enhancement of heat transfer and fluid flow","authors":"P.H.G. Allen ,&nbsp;T.G. Karayiannis","doi":"10.1016/0890-4332(95)90050-0","DOIUrl":"10.1016/0890-4332(95)90050-0","url":null,"abstract":"<div><p>The electrohydrodynamic (EHD) enhancement mechanism is first outlined in this paper. A comprehensive review of past work on EHD single and two-phase heat transfer, as well as past work in the related area of EHD-induced flow, is then presented. Correlation attempts are also reviewed. Recent experimental results for EHD boiling and condensation in single- and multi-tube heat exchangers are discussed. A description of the possible practical EHD electrode systems for applications in power production cycles and regrigeration is also presented. The research work needed to clarify outstanding questions in EHD and encourage its use in practical systems is discussed.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 5","pages":"Pages 389-423"},"PeriodicalIF":0.0,"publicationDate":"1995-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90050-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81361820","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: 205
Characteristics of a heat exchanger based on a collector heat pipe 基于集热器热管的热交换器的特性
Heat Recovery Systems and CHP Pub Date : 1995-07-01 DOI: 10.1016/0890-4332(95)90058-6
S.V. Konev , J.L. Wang , C.J. Tu
{"title":"Characteristics of a heat exchanger based on a collector heat pipe","authors":"S.V. Konev ,&nbsp;J.L. Wang ,&nbsp;C.J. Tu","doi":"10.1016/0890-4332(95)90058-6","DOIUrl":"10.1016/0890-4332(95)90058-6","url":null,"abstract":"<div><p>An experimental study of the performance of an air-to-air heat exchanger onthe basis of a collector heat pipe has been carried out to investigate its behaviour under different operating conditions. Freon-113 is used as the working fluid. A thermal calculation method for the heat exchanger on the basis of a collector heat pipe is developed. The theoretical results fit in with the experimental results.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 5","pages":"Pages 493-502"},"PeriodicalIF":0.0,"publicationDate":"1995-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90058-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90432777","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
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