Results 181 to 190 of about 8,151 (223)

Organic Rankine Cycle as Bottoming Cycle to a Combined Brayton and Clausius - Rankine Cycle

Key Engineering Materials, 2013
A preliminary evaluation has been made of a possibility of bottoming of a conventional Brayton cycle cooperating with the CHP power plant with the organic Rankine cycle installation. Such solution contributes to the possibility of annual operation of that power plant, except of operation only in periods when there is a demand for the heat.
Dariusz Mikielewicz, Jan Wajs, Elżbieta Żmuda   +2 more
openaire   +1 more source

Comparison of a Basic Organic Rankine Cycle and a Parallel Double-Evaporator Organic Rankine Cycle

Heat Transfer Engineering, 2016
ABSTRACTThe applications of zeotropic mixtures and multi-evaporator systems are two viable options to improve the performance of the organic Rankine cycle (ORC). This paper conducts the thermo-economic comparison of a basic ORC with R245fa/R600a and a parallel double-evaporator organic Rankine cycle (PDORC) with R245fa.
Yiping Dai, Dongshuai Hu, Yi Wu, Yike Gao, Yue Cao   +4 more
openaire   +1 more source

Optimizing Energy Conversion Using Organic Rankine Cycles and Supercritical Rankine Cycles

ASME 2011 5th International Conference on Energy Sustainability, Parts A, B, and C, 2011
The optimization of energy conversion systems is of great significance in the utilization of low-grade heat. This paper presents an analysis of 6 working fluids in 12 thermodynamic cycles to optimize the energy conversion systems. The optimal exergy efficiency of the system is dependent on the type of the thermodynamic cycle, the choice of appropriate ...
Huijuan Chen, D. Yogi Goswami, Muhammad M. Rahman, Elias K. Stefanakos   +3 more
openaire   +1 more source

Design and testing of the Organic Rankine Cycle

Energy, 2001
Abstract We propose a new type of environmentally friendly system called the “Organic Rankine Cycle” (ORC) in which low-grade heat sources are utilized. This system combines a circulated thermosyphon with a turbine system. The working fluid used in this study is an organic substance which has a low boiling point and a low latent heat for using low ...
Takahisa Yamamoto, Tomohiko Furuhata, Norio Arai, Koichi Mori   +3 more
openaire   +1 more source

Optimization of Overcritical Organic Rankine Cycle

Applied Mechanics and Materials, 2016
This paper explores the optimization cases for overcritical Organic Rankine Cycle (ORC) in various situations. First the ORC optimization in terms of working fluid selection is discussed. In this case, thermal efficiencies for 10 different working fluids have been calculated under certain temperature frames and the results are compared.
Qing Quan Wang, Sławomir Smoleń
openaire   +1 more source

Innovative Research in the Organic Rankine Cycle

Impact, 2020
Thermodynamic cycles consist of a sequence of thermodynamic processes involving the transfer of heat and work into and then out of a system. Variables, such as pressure and temperature, eventually return the system to its initial state. During the process of passing through the system, the working fluid converts heat and disposes of any remaining heat,
Tzu-Chen Hung, Yong-Qiang Feng
openaire   +1 more source

Comparison of trilateral cycles and organic Rankine cycles

Energy, 2011
A comparison of optimized trilateral cycle (TLC) - systems with water as working fluid and optimized organic Rankine cycle (ORC) – systems with pure organic working fluids is presented. The study includes the heat transfer to and from the cycles. The TLC - systems were optimized by the selection of the maximum water temperature, the ORC - systems by ...
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The Organic Rankine Cycle

2013
Chap. 3 is dedicated to Rankine cycles with organic fluids: the so-called organic Rankine cycles (ORC), which in recent years have had a large success on the market. After a brief historical review we discuss the characteristics that must have the potential working fluids to be used in an ORC engine. A large discussion is about the interactions between
openaire   +1 more source

Multi-objective optimisation of a novel organic Rankine-Goswami cycle operating with different refrigerants in the organic Rankine cycle

International Journal of Exergy, 2023
This paper tackles the multi-objective design optimisation and comparative investigation of a cascade organic Rankine-Goswami cycle (ORC-GW) operating with various refrigerants, namely R600, R236ea, and R245fa, in the organic Rankine cycle (ORC). The solution of the multi-objective optimisation problem is achieved by applying the African vultures ...
openaire   +2 more sources

Performance characteristics of organic Rankine cycles

International Journal of Ambient Energy, 1984
SYNOPSIS The organic Rankine cycle is one of the most promising techniques for production of mechanical power from low temperature sources such as solar heated fluids, geothermal brines and industrial waste heat. A series of cycle performance calculations has been carried out for a broad range of working fluids including Refrigerant 12, isobutane ...
openaire   +1 more source