Next Article in Journal
Optimal Charging Scheduling of Electric Vehicles in Smart Grids by Heuristic Algorithms
Next Article in Special Issue
Preparation of Slag Wool by Integrated Waste-Heat Recovery and Resource Recycling of Molten Blast Furnace Slags: From Fundamental to Industrial Application
Previous Article in Journal
Modeling of Clostridium tyrobutyricum for Butyric Acid Selectivity in Continuous Fermentation
Previous Article in Special Issue
Effects of Degree of Superheat on the Running Performance of an Organic Rankine Cycle (ORC) Waste Heat Recovery System for Diesel Engines under Various Operating Conditions
Article Menu

Export Article

Open AccessArticle
Energies 2014, 7(4), 2436-2448; doi:10.3390/en7042436

Dynamic Response of a 50 kW Organic Rankine Cycle System in Association with Evaporators

Green Energy Research Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan
Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
Author to whom correspondence should be addressed.
Received: 29 January 2014 / Revised: 23 March 2014 / Accepted: 9 April 2014 / Published: 17 April 2014
(This article belongs to the Special Issue Waste Heat Recovery—Strategy and Practice)
View Full-Text   |   Download PDF [334 KB, uploaded 17 March 2015]   |  


The influences of various evaporators on the system responses of a 50 kW ORC system using R-245fa are investigated in this study. First the effect of the supplied hot water flowrate into the evaporator is examined and the exit superheat on the system performance between plate and shell-and-tube evaporator is also reported. Test results show that the effect of hot water flowrate on the evaporator imposes a negligible effect on the transient response of the ORC system. These results prevail even for a 3.5-fold increase of the hot water flowrate and the system shows barely any change subject to this drastic hot water flowrate change. The effect of exit superheat on the ORC system depends on the type of the evaporator. For the plate evaporator, an exit superheat less than 10 °C may cause ORC system instability due to considerable liquid entrainment. To maintain a stable operation, the corresponding Jakob number of the plate heat evaporator must be above 0.07. On the other hand, by employing a shell and tube heat evaporator connected to the ORC system, no unstable oscillation of the ORC system is observed for exit superheats ranging from 0 to 17 °C. View Full-Text
Keywords: organic Rankine cycle (ORC); evaporator; shell-and-tube heat exchanger; plate heat exchanger organic Rankine cycle (ORC); evaporator; shell-and-tube heat exchanger; plate heat exchanger

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Lee, Y.-R.; Kuo, C.-R.; Liu, C.-H.; Fu, B.-R.; Hsieh, J.-C.; Wang, C.-C. Dynamic Response of a 50 kW Organic Rankine Cycle System in Association with Evaporators. Energies 2014, 7, 2436-2448.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top