Heat Recovery Systems and CHP最新文献_第8页

Developmental status of Bhel's high temperature high pressure (HTHP) circulating bed granular filter (CBGF) Bhel高温高压循环床颗粒过滤器(CBGF)的发展现状

Heat Recovery Systems and CHP Pub Date : 1995-02-01 DOI: 10.1016/0890-4332(95)90027-6

Rajagopala Rao S., Rangan R.S., Prakash S.G., Chakravarti S., Krishnamoorthy S.

引用次数: 3

Design considerations for PFBC gas expander PFBC气体膨胀器的设计注意事项

Heat Recovery Systems and CHP Pub Date : 1995-02-01 DOI: 10.1016/0890-4332(95)90025-X

Lu Pengfei

引用次数: 0

The influence of the exhaust system unsteady gas flow and insulation on the performance of a turbocharged diesel engine 排气系统非定常气体流动和绝缘对增压柴油机性能的影响

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90037-3

C.D. Rakopoulos, E.C. Andritsakis, D.T. Hountalas

{"title":"The influence of the exhaust system unsteady gas flow and insulation on the performance of a turbocharged diesel engine","authors":"C.D. Rakopoulos, E.C. Andritsakis, D.T. Hountalas","doi":"10.1016/0890-4332(95)90037-3","DOIUrl":"10.1016/0890-4332(95)90037-3","url":null,"abstract":"<div><p>A comprehensive digital computer program is used to simulate the unsteady gas flow in the exhaust and inlet systems of a multi-cylinder, turbocharged, medium-high speed, four-stroke diesel engine installed at the authors' laboratory. The simulation assumes one-dimensional, time-varying gas flow in the engine pipes and incorporates numerous realistic fluid dynamic, thermodynamic and heat-transfer features. The characteristic mathematical transformation solution of the gas-flow dynamics partial differential equations is interfaced with First-Law analysis models of the cylinders main chambers and prechambers. The simulation results are compared most favourably against the engine's experimental performance results, which include mean air consumption rate, pressure histories at various locations on the exhaust system, and energy-mean temperature values at the exit of the exhaust system. The simulation results are also utilized for the determination of the various cylinders' exhaust waves intensity, as they are imposed by the design characteristics of the exhaust manifold. The plotting of relevant charts, showing the contour variation of gas pressure, temperature and Mach index against engine crank angle and pipe length, aids the correct interpretation of the observed behaviour. The detailed simulation of the fluid dynamic and heat-transfer fields in the engine exhaust system, permits an interesting parametric study of the influence of the degree of insulation of the exhaust system on the energy and exergy (availability) content of the exhaust gases before the turbocharger turbine, by coupling the above First-Law with Second-Law analysis concepts.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 1","pages":"Pages 51-72"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90037-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79262568","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

Selecting stream splits in heat exchanger network design 换热器网络设计中分流的选择

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90039-X

G.T. Polley

引用次数: 6

Maximum obtainable specific power of high-temperature waste heat engines 高温废热发动机可获得的最大比功率

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90033-0

Chin Wu, William H. Schulden

引用次数: 9

Heat transfer characteristic of dropwise condensation on an inclined circular tube 斜圆管内滴状冷凝的传热特性

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90035-7

T. Hosokawa , Y. Fujiwara , Y. Ogami , Y. Kawasima , Y. Yamasaki

引用次数: 4

Numerical study on coupled heat and mass transfers in an absorber with external fluid heating 外流体加热吸收体内耦合传热传质的数值研究

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90034-9

L.M. Sun, N. Ben Amar, F. Meunier

{"title":"Numerical study on coupled heat and mass transfers in an absorber with external fluid heating","authors":"L.M. Sun, N. Ben Amar, F. Meunier","doi":"10.1016/0890-4332(95)90034-9","DOIUrl":"10.1016/0890-4332(95)90034-9","url":null,"abstract":"<div><p>This paper presents a numerical study of coupled heat and mass transfers in an adsorber with external fluid heating. A one-dimensional model incorporating both heat transfer and Ergun flow of the adsorbate inside the adsorber is developed. Numerical investigations are made for two adsorbent-adsorbate pairs: zeolite 13X-water and 13X-ammonia, whose operating pressures are considerably different. It is shown that, for the 13X-water pair which has a low operating pressure and therefore a low gas density, the dynamics of the adsorber can be significantly limited by the mass transfer inside the adsorbent bed, when its dimension is large. The poor mass transfer can lead to very large pressure variations and small adsorbed or desorbed quantities, making the heat pump process ineffective. Conversely, the zeolite-ammonia pair operates at much higher pressures (several bars) and the corresponding pressure variations in the bed are, in general, negligible. In this case, the limitation by mass transfer can be neglected and the uniform-pressure assumption is acceptable.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 1","pages":"Pages 19-29"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90034-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76607177","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: 78

A general thermodynamic model for absorption chillers: Theory and experiment 吸收式制冷机的一般热力学模型:理论与实验

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90038-1

J.M. Gordon , Kim Choon Ng

引用次数: 69

Performance prediction of cyclic thermal regenerators utilising latent heat of packing matrix 利用填料基质潜热的循环热蓄热器性能预测

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90032-2

E.A. Foumeny, J. Ma

引用次数: 1

Enhancing gas turbine performance by intake air cooling using an absorption chiller 利用吸收式冷却器进气冷却，提高燃气轮机性能

Heat Recovery Systems and CHP Pub Date : 1995-01-01 DOI: 10.1016/0890-4332(95)90036-5

B. Mohanty, G. Paloso Jr.

{"title":"Enhancing gas turbine performance by intake air cooling using an absorption chiller","authors":"B. Mohanty, G. Paloso Jr.","doi":"10.1016/0890-4332(95)90036-5","DOIUrl":"10.1016/0890-4332(95)90036-5","url":null,"abstract":"<div><p>The performance of gas turbines, operated either as a simple cycle or a combined cycle, is critically constrained by the prevailing ambient temperature, particularly in arid and tropical climates. This paper investigates the option of cooling the intake air to the compressor of the gas-turbine system using an absorption chiller in order to increase the gas turbine capacity. High-temperature waste heat from the exhaust gas may be utilized to produce steam in a recovery boiler. Part of the steam produced could then be used to drive a lithium-bromide double-effect absorption chiller which in turn could cool the incoming air. An analysis carried out by taking the weather data of Bangkok (Thailand) indicates that reducing the temperature from ambient condition to 15°C could help to increase the instantaneous power output between 8 and 13%. As an outcome, as much as 11% additional electricity could be generated from the same gas turbine power plant.</p><p>A simple economic assessment indicates that the proposed scheme will require a minimal investment as compared to the commissioning cost of a new gas turbine unit to meet the corresponding capacity increment. The latter will need nearly four times higher initial cost than the amount estimated for the proposed scheme. Thus, implementation of such a system would significantly abate the negative impact of the ambient temperature, while providing an economically and environmentally attractive option for energy producers in most developing nations of the world which are located in arid and tropical zones.</p></div>","PeriodicalId":100603,"journal":{"name":"Heat Recovery Systems and CHP","volume":"15 1","pages":"Pages 41-50"},"PeriodicalIF":0.0,"publicationDate":"1995-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0890-4332(95)90036-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76847613","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: 89