共查询到20条相似文献，搜索用时 15 毫秒
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Jameel R. Khan 《国际能源研究杂志》2008,32(11):1030-1046
A novel cooling and power cycle is proposed, which combines a semi‐closed cycle gas turbine called the high‐pressure regenerative turbine engine (HPRTE) with a vapor absorption refrigeration system (VARS). This combined HPRTE/VARS cycle is capable of producing power, water and refrigeration effect for external loads. In a previous study, the combined cycle was modeled using zero‐dimensional steady‐state thermodynamics, with specified values of polytrophic efficiencies and pressure drops for the turbo‐machinery and heat exchangers. In this study, a modified version of the combined HPRTE/VARS cycle is experimentally investigated for the demonstration of the combined cycle concept and for the model validation. This modified HPRTE has two water‐cooled heat exchangers instead of the absorption refrigeration system. The model of the original combined HPRTE/VARS cycle was modified to simulate the performance of the modified HPRTE cycle. Temperatures, pressure, mass flow rates and other overall cycle parameters obtained from the computer model are compared with the corresponding experimental values of the modified cycle. The agreement between the values is found to be within acceptable limits. In addition, the uncertainty analysis of the experimental data is undertaken to find the uncertainty in the final output variables: thermal efficiency and non‐dimensional water extraction parameter. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
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Most natural gas (NG) producers in the Persian Gulf face increasing challenges in meeting their domestic gas demands and therefore seek to reduce their NG consumption. Concurrently, the on‐site power generation and cooling capacities of local NG processing facilities are constrained by extreme climatic conditions. A combined cooling and power scheme based on gas turbine (GT) waste heat‐powered absorption refrigeration is techno‐economically assessed to reduce the NG consumption of a major gas processing plant in the Persian Gulf. The scheme utilizes double‐effect water‐lithium bromide absorption refrigeration activated by steam generated from GT exhaust gas waste heat to provide both GT compressor inlet air and process gas cooling. Based on a thermodynamic analysis, recovery of 150 MW of GT waste heat is found to enhance the plant cooling capacity by 195 MW, thereby permitting elimination of a 32.6 MW GT and existing cooling equipment. On‐site power generation is enhanced by 196 GWh annually through GT compressor inlet air cooling, with energy efficiency (i.e., 64%) improved by 35% using cogeneration relative to the existing power generation plant. The overall net annual operating expenditure savings contributed by the combined cooling and power system are of $US13 million to 34 million based on present and projected local utility prices, with an economic payback period estimated at 2 to 5 years. These savings translate to approximately 94 to 241 MMSCM of NG per year, highlighting the potential of absorption refrigeration to both enhance the power generation and cooling capacity of hydrocarbon processing plants exposed to harsh environmental conditions and to realize substantial primary energy savings. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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The prototype of combined vapour compression–absorption refrigeration system was set up, where a gas engine drove directly an open screw compressor in a vapour compression refrigeration chiller and waste heat from the gas engine was used to operate absorption refrigeration cycle. The experimental procedure and results showed that the combined refrigeration system was feasible. The cooling capacity of the prototype reached about 589 kW at the Chinese rated conditions of air conditioning (the inlet and outlet temperatures of chilled water are 12 and 7°C, the inlet and outlet temperatures of cooling water are 30 and 35°C, respectively). Primary energy rate (PER) and comparative primary energy saving were used to evaluate energy utilization efficiency of the combined refrigeration system. The calculated results showed that the PER of the prototype was about 1.81 and the prototype saved more than 25% of primary energy compared to a conventional electrically driven vapour compression refrigeration unit. Error analysis showed that the total error of the combined cooling system measurement was about 4.2% in this work. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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目的 针对大容量联合循环机组的中压供热蒸汽参数,找出最佳的抽汽供热方式。 方法 结合增城项目热负荷特点,对应用在燃气-蒸汽联合循环机组上的各种供热抽汽方案,在系统配置、初投资、负荷适应性、机组效率和发电出力等方面进行较详细的论述和分析。 结果 分析结果表明,相比热段抽汽方式和中压缸抽汽方式,冷段抽汽方式均具有更高的机组发电出力、发电效率和综合能源利用率,初投资也最低。 结论 冷段抽汽方式是一种参数匹配适应性更好、适应机组变工况运行能力更强、热经济性和初投资更优、更适合大容量联合循环机组的中压抽汽供热方式,该方案可供同类工程设计借鉴参考。 相似文献
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简述了整体煤气化联合循环（IGCC）目前的进展情况。介绍了过去和当前世界各国主要的IGCC项目。展示了第二代IGCC装置的性能指标。IGCC为代表的燃蒸联合循环将是21世纪能源建设的重要方向。 相似文献
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本文主要介绍了国外燃气轮机及其联合循环技术的发展水平和今后10年世界燃气轮机工业的发展态热,以及我国当前燃气轮机工业的技术水平和存在的明显差距,指出了我国在当前有利形式下所面临的机遇和挑战。 相似文献
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论“热电联产”型燃气—蒸汽联合循环的特性 总被引：3，自引：0，他引：3
探讨了“热电联产”型燃气－蒸汽联合循环中热电联产的各种组合方案及其特性,剖析了燃气轮机热电联产系统特性图的物理含义,提出了热电联产型联合循环装置的各种组合方案。 相似文献
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简要介绍MPCP1（M701F）燃气-蒸汽联合循环机组控制系统＂DIASYS Netmation＂的设计思路及在实现控制功能过程中所采取的控制策略。 相似文献
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压气机静叶可调对燃气轮机和联合循环变工况性能的影响 总被引：1，自引：0，他引：1
本文叙述了压气机采用可调静叶对单轴恒速燃气轮机变工况性能的影响。通过计算得到了燃气轮机变工况性能曲线,分析了不同的最大排气温度对静叶调节区的影响,以及在部分负荷下机组效率变化的影响。叙述了压气机静叶调节时对由单轴恒速燃气轮机组成的联合循环的影响,指出这时能改善部分负荷下的效率,因而得到了实际应用。 相似文献
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美国GE公司在SPEEDTRONIC^[TM]Mark Ⅴ的基础上于1999年推出了最新研制的Mark Ⅵ。国内未来几年在新的燃气蒸汽联合循环机组上将采用此控制系统。本文介绍该控制系统的概貌、软硬件情况以及它与Mark Ⅴ的主要区别。 相似文献
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高炉煤气燃气轮机发电——利用高炉煤气的好形式 总被引：1，自引：0，他引：1
着重介绍了使用高炉煤气的燃气轮机的特点,以及目前国内外各种功率等级的使用高炉煤气燃气轮机的现状,为钢铁行业利用高炉煤气提供信息。 相似文献
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考虑到微燃机在夏季高温环境下性能下降导致CCHP(冷热电三联产系统)运行偏离设计工况,本文提出了利用CCHP系统烟气余热进行喷射制冷,并利用该冷量对微燃机进气进行冷却的研究思路。理论计算发现:以青岛为例,在夏季工况下,对微燃机进气进行冷却可以提高出力16.4%,提高发电效率7.5%左右;对比微燃机进气冷却前后,CCHP系统一次能源效率可提高25%左右,而系统一次能源节约率可提高3%~10%;同时系统单位发电量的CO_2排放量可降低约37%。因此,在夏季高温季节对微燃机进行进气冷却可以改善微燃机和CCHP系统运行性能。 相似文献
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以我国自行研制的9000kW燃气轮机为对象,详细分析了9000kW燃气一蒸汽联合循环的现实性和优越性,为我国自行研制的燃气轮机进一步开发联合循环电站找到了可行的途径。 相似文献