Enhanced thermal efficiency organic Rankine cycle for renewable power generation

被引：11

作者：

Caldino Herrera, U. ^{[1
]}

Garcia, J. C. ^{[2
]}

Sierra-Espinosa, F. Z. ^{[2
]}

Rodriguez, J. A. ^{[2
]}

Jaramillo, O. A. ^{[3
]}

De Santiago, O. ^{[4
]}

Tilvaldiev, S. ^{[1
]}

机构：

[1] Univ Autonoma Ciudad Juarez, Av Plutarco Elias Calles 1210, Ciudad Juarez 32310, Chihuahua, Mexico

[2] Univ Autonoma Estado Morelos, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico

[3] Univ Nacl Autonoma Mexico, Inst Energias Renovables, Priv Xochicalco S-N, Temixco 62580, Morelos, Mexico

[4] ETU I D, Cuauhtemoc 3, Ind San Pedrito Penuelas 76148, Queretaro, Mexico

来源：

APPLIED THERMAL ENGINEERING | 2021年 / 189卷

关键词：

Solar assisted ORC; Single-loop ORC; R245fa organic fluid; Radial income turbine; ORC plant output;

D O I：

10.1016/j.applthermaleng.2021.116706

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The Organic Rankine Cycle (ORC) technology is recognized to supply electricity from low temperature waste heat and solar energy sources. When the ORC system is heated by solar energy it uses two-fluids and two-loops, producing a relatively low thermal efficiency. To increase the ORC applicability, a solar energy assisted ORC system of single loop is proposed. The aim is to reduce the ORC heat transfer losses, minimize the equipment initial and maintenance cost and enhance the thermal efficiency. This is achieved by using bladder tanks which may improve drastically the ORC technical and economic performance. This method allows the heating to vary in the collector keeping the turbine inlet condition as a constant, impacting on the heat transfer losses and simplifying the configuration. The paper shows that an ORC of a single fluid can keep a constant turbine inlet despite the mass flow rate variations due to the suns radiation incidence, therefore, reducing the risk of likely faults in the turbine caused by high frequency vibration. An ORC enhanced 10.54% thermal efficiency is obtained with 0.5 kg/s of R1233zd(E) and a pressure ratio = 5, powered by parabolic trough collectors to generate 10 kW during eight hours per day. The ORC competitiveness is dictated by a total generation cost of 54.3 $/MWh and the advantages of a single working-fluid single loop simplicity for overall configuration.

引用

页数：13

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