Thermodynamic Analysis of ORC for Energy Production from Geothermal Resources
Thermodynamic Analysis of ORC for Energy Production from Geothermal Resources
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DOI：
10.1016/j.egypro.2014.01.140
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
G. Cammarata;L. Cammarata;G. Petrone
中科院分区：
文献类型：
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作者：
G. Cammarata;L. Cammarata;G. Petrone
本文对地热资源有机朗肯循环进行了热力学分析。采用基于集总参数法的数值流程图工具来计算组成循环的每个变换期间的热力学变量的值。状态方程用Peng-Robinson公式表示。不同的设备组件由单个块体勾勒，通过平衡方程相互连接。分析进行考虑两种工作流体（异戊烷和异丁烷）。结果得到了几组操作参数，如工作流体的蒸发和冷凝压力，地热流体的质量流率和冷却水温度。从结果来看，热力循环建立在T-S计划，允许量化的有效性和能源效益相关的调查功能的情况。
This study concerns a thermodynamic analysis of Organic Rankine Cycles for energy conversion from geothermal resources. A numerical flow-chart tool based on a lumped parameters approach is adopted to compute values of thermodynamic variables during each transformation composing the cycle. The equation of state is expressed by the Peng-Robinson formulation. The different plant components are outlined by single blocks, linked each other by connections through balance equations. Analyses are carried-out considering two working fluids (isopentane and isobutane). Results are obtained for several sets of operating parameters, such as the evaporation and condensation pressure for the working fluid, the mass flow rate of the geothermal fluid and the cooling water temperature. From results, thermodynamic cycles are built-up in the T-s plan, allowing to quantify effectiveness and energy benefit related to the investigated functional scenarios.