Next Article in Journal
Heartbeats Do Not Make Good Pseudo-Random Number Generators: An Analysis of the Randomness of Inter-Pulse Intervals
Previous Article in Journal
Spectral and Energy Efficient Low-Overhead Uplink and Downlink Channel Estimation for 5G Massive MIMO Systems
Open AccessArticle

Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State

1
Department of Energy Engineering, Budapest University of Technology and Economics, Muegyetem rkp. 3, H-1111 Budapest, Hungary
2
MTA Centre for Energy Research, Department of Thermohydraulics, P.O. BOX 49, H-1525 Budapest, Hungary
*
Author to whom correspondence should be addressed.
Entropy 2018, 20(2), 93; https://doi.org/10.3390/e20020093
Received: 17 January 2018 / Revised: 26 January 2018 / Accepted: 27 January 2018 / Published: 30 January 2018
(This article belongs to the Section Thermodynamics)
The shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equation of state. It is demonstrated that a limiting isochoric heat capacity might exist between dry and wet fluids. With the Redlich-Kwong equation of state, this limit can be predicted with good accuracy for several fluids, including alkanes. View Full-Text
Keywords: Organic Rankine Cycle; isochoric heat capacity; vibrational degree of freedom Organic Rankine Cycle; isochoric heat capacity; vibrational degree of freedom
Show Figures

Figure 1

MDPI and ACS Style

Groniewsky, A.; Imre, A.R. Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State. Entropy 2018, 20, 93.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop