朗肯循环
兰金度
有机朗肯循环
废物管理
按来源划分的电力成本
环境科学
余热回收装置
余热
工艺工程
涡轮机
发电
工程类
机械工程
功率(物理)
热交换器
热力学
物理
作者
Alessandra Ghilardi,Guido Francesco Frate,Andrea Baccioli,Dario Ulivieri,Lorenzo Ferrari,Umberto Desideri,Lorenzo Cosi,Simone Amidei,Vittorio Michelassi
出处
期刊:Journal of engineering for gas turbines and power
[ASME International]
日期:2022-12-20
卷期号:145 (5)
被引量:1
摘要
Abstract The waste heat recovery from the gas turbine (GT) exhaust is typical for increasing performance and reducing CO2 emissions in industrial facilities. Nowadays, numerous already operating gas turbine plants could be retrofitted and upgraded with a bottoming cycle powered by the exhaust gasses. In this case, the standard solution would be to use a water steam Rankine cycle. However, even if this technology usually yields the best efficiency, other alternatives are often preferred on the lower size scale. Organic Rankine cycles (ORCs) are the commercial alternatives to steam Rankine cycles, but many other alternative cycles exist or can be developed, with potential benefits from safety, technical or economic points of view. This study compares several alternative technologies suited to recover gas turbine waste heat, and a detailed cost analysis for each is presented. On this basis, a guideline is proposed for the technology choice considering a wide range of application sizes and temperature levels typical for waste heat recovery from gas turbines. The compared technologies are ORCs, Rankine cycles (RCs) with water and ammonia mixtures at constant composition, supercritical CO2 cycles (sCO2), sCO2 cycles with mixtures of CO2 and other gasses. As it resulted, ORCs can achieve the lowest levelized cost of energy (32 $/MWh–46 $/MWh) if flammable fluids can be employed. Otherwise, Rankine cycles with a constant composition mixture of water and ammonia are a promising alternative, reaching a levelized cost of energy (LCOE) of 36–58 $/MWh.
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