Abst'/> Dry steam cyc1e application for excess steam utilization: Kamojang geothermal power plant case study
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Dry steam cyc1e application for excess steam utilization: Kamojang geothermal power plant case study

机译:干蒸汽循环在过量蒸汽利用中的应用:Kamojang地热发电厂案例研究

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AbstractThis study investigated the utilization of available excess steam by the Kamojang geothermal power plant, which, owing to the vapor-domination of the steam, utilizes a dry steam cycle. A model of the system was validated against actual Kamojang Unit-2 data and found to produce accurate results within a low discrepancy level (<5% error). The modeled performance of the proposed system was obtained through optimization of the non-condensable gases (NCGs) gas removal system (GRS) based on heat balance calculations and assuming content of NCGs in the working fluid based on real operational data. To optimize the model, five GRS configurations were investigated: one-stage steam ejector, two-stage steam ejector, one-stage liquid ring vacuum pump (LRVP), two-stage LRVP, and hybrid system (ejector plus LRVP). To set constraints on the optimization, the allowable condenser pressure was defined based on the cooling water temperature and the maximum temperature difference. Under the best design configuration (a one-stage LRVP), the proposed plant generated a gross electric power of 15.9 MW with a parasitic power consumption of 755.2 kW. The proposed system to convert unused discharge steam into electricity suggests that its installation will result in an increase of the Kamojang geothermal power plant capacity.HighlightsExcess steam discharged to the atmosphere is utilized using dry-steam cycle.Model of the system was developed and validated against actual power plant.Gas removal system configurations are also examined for optimization.The proposed system can deliver additional 7.6% of power to the current capacity.
机译: 摘要 此研究调查了Kamojang地热发电厂对可用多余蒸汽的利用,这归因于蒸汽的蒸汽控制作用,利用干蒸汽循环。根据实际的Kamojang Unit-2数据验证了该系统的模型,发现该模型可在低差异水平(<5%误差)内产生准确的结果。通过基于热平衡计算优化不凝性气体(NCGs)气体去除系统(GRS)并基于实际运行数据假设工作流体中NCG的含量,优化了所提出系统的性能。为了优化模型,研究了五种GRS配置:一级蒸汽喷射器,二级蒸汽喷射器,一级液环真空泵(LRVP),二级LRVP和混合系统(喷射器加LRVP)。为了设置优化约束,冷凝器允许压力根据冷却水温度和最大温差定义。在最佳设计配置下(单级LRVP),拟建电厂产生的总电力为15.9 MW,寄生功耗为755.2 kW。提议的将未使用的排放蒸汽转化为电能的系统表明,其安装将导致Kamojang地热发电厂的容量增加。 < ce:abstract xmlns:ce =“ http://www.elsevier.com/xml/common/dtd” xmlns =“ http://www.elsevier.com/xml/ja/dtd” class =“ author-highlights” xml:lang =“ zh-CN” id =“ abs0015” view =“ all”> 突出显示 使用干蒸汽循环利用排放到大气中的过量蒸汽。 已开发系统模型并针对实际功率进行了验证植物。 除气系统配置也进行了优化检查。 拟议的系统可以为当前容量提供额外的7.6%电量。

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