A Kalina power cycle driven by renewable energy sources
A Kalina power cycle driven by renewable energy sources
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DOI：
10.1016/j.energy.2008.12.011
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发表时间：
2009-04
期刊：
影响因子：
9
通讯作者：
P. Lolos;E. Rogdakis
中科院分区：
文献类型：
--
作者：
P. Lolos;E. Rogdakis
本文研究了一种利用低温热源发电的Kalina循环。该循环的主要热源由平板太阳能集热器提供。此外，一个外部热源连接到循环中，它相当于提供给循环的总热能的5%到10%。该循环在低压水平（0.2-4.5bar）和低最高温度（130°C）下运行。研究了涡轮进口nh3质量分数随膨胀压力的变化对循环效率的影响。对于给定的条件，可以确定最佳的蒸汽质量分数和操作压力范围，从而获得最佳的循环性能。推导了运行参数与自变量和循环效率之间的简单方程。
The present paper investigates a Kalina cycle using low-temperature heat sources to produce power. The main heat source of the cycle is provided from flat solar collectors. In addition, an external heat source is connected to the cycle, which corresponds to 5% up to 10% of the total thermal energy supplied to the cycle. The cycle operates at low pressure levels (0.2–4.5bar) and low maximum temperature (130°C). The NH3mass fraction at the turbine inlet varies along with the expansion pressure and the effects on the cycle efficiency are studied. For given conditions, an optimum range of vapor mass fractions and operating pressures can be identified that result in optimum cycle performance. Simple equations have been derived that link the operational parameters with the independent variables as well as with the cycle efficiency.