scholarly journals Iterative Approach for the Design of an Organic Rankine Cycle based on Thermodynamic Process Simulations and a Small-Scale Test Rig

2017 ◽  
Vol 129 ◽  
pp. 18-25 ◽  
Author(s):  
Sebastian Kuboth ◽  
Marc Neubert ◽  
Markus Preißinger ◽  
Dieter Brüggemann
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Iterative Approach ◽  
Thermodynamic Process ◽  
Test Rig ◽  
Process Simulations ◽  
Scale Test

PRESENTATION OF A TEST-RIG FOR HEAT TRANSFER MEASUREMENTS OF A FLUID AT SUPERCRITICAL STATE FOR ORGANIC RANKINE CYCLE APPLICATION

2018 ◽  
Author(s):  
Marija Lazova ◽  
Alihan Kaya ◽  
Steven Lecompte ◽  
Michel De Paepe
Keyword(s):  
Heat Transfer ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Supercritical State ◽  
Test Rig

Evaluation of external heat loss from a small-scale expander used in organic Rankine cycle

2011 ◽  
Vol 31 (14-15) ◽  
pp. 2694-2701 ◽  
Author(s):  
Jing Li ◽  
Gang Pei ◽  
Yunzhu Li ◽  
Jie Ji
Keyword(s):  
Heat Loss ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
External Heat ◽  
Small Scale

scholarly journals Energy, exergy, and environmental assessment of a small-scale solar organic Rankine cycle using different organic fluids

Heliyon ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. e07947
Author(s):  
Geanette Polanco Piñerez ◽  
Guillermo Valencia Ochoa ◽  
Jorge Duarte-Forero
Keyword(s):  
Environmental Assessment ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Organic Fluids

Developments on Small-Scale Organic Rankine Cycle (ORC) Systems

2016 ◽  
Vol 6 (4) ◽  
Author(s):  
George Kosmadakis ◽  
Dimitris Manolakos
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale

1-D Model Analysis of Tesla Turbine for Small Scale Organic Rankine Cycle (ORC) System

2017 ◽  
Author(s):  
Jian Song ◽  
Chun-wei Gu
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Organic Rankine Cycle ◽  
Axial Flow ◽  
Rankine Cycle ◽  
Expansion Ratio ◽  
Working Fluid ◽  
Small Scale ◽  
Low Grade ◽  
D Model

Energy shortage and environmental deterioration are two crucial issues that the developing world has to face. In order to solve these problems, conversion of low grade energy is attracting broad attention. Among all of the existing technologies, Organic Rankine Cycle (ORC) has been proven to be one of the most effective methods for the utilization of low grade heat sources. Turbine is a key component in ORC system and it plays an important role in system performance. Traditional turbine expanders, the axial flow turbine and the radial inflow turbine are typically selected in large scale ORC systems. However, in small and micro scale systems, traditional turbine expanders are not suitable due to large flow loss and high rotation speed. In this case, Tesla turbine allows a low-cost and reliable design for the organic expander that could be an attractive option for small scale ORC systems. A 1-D model of Tesla turbine is presented in this paper, which mainly focuses on the flow characteristics and the momentum transfer. This study improves the 1-D model, taking the nozzle limit expansion ratio into consideration, which is related to the installation angle of the nozzle and the specific heat ratio of the working fluid. The improved model is used to analyze Tesla turbine performance and predict turbine efficiency. Thermodynamic analysis is conducted for a small scale ORC system. The simulation results reveal that the ORC system can generate a considerable net power output. Therefore, Tesla turbine can be regarded as a potential choice to be applied in small scale ORC systems.

Optimizing the performance of small-scale organic Rankine cycle that utilizes a single-screw expander

2017 ◽  
Vol 189 ◽  
pp. 416-432 ◽  
Author(s):  
D. Ziviani ◽  
S. Gusev ◽  
S. Lecompte ◽  
E.A. Groll ◽  
J.E. Braun ◽  
...  
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Single Screw

Experimental characterization and comparison of an axial and a cantilever micro-turbine for small-scale Organic Rankine Cycle

2018 ◽  
Vol 140 ◽  
pp. 235-244 ◽  
Author(s):  
Andreas P. Weiß ◽  
Tobias Popp ◽  
Jonas Müller ◽  
Josef Hauer ◽  
Dieter Brüggemann ◽  
...  
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Experimental Characterization ◽  
Micro Turbine

Numerical Study of a Micro Gas Turbine Integrated With a Supercritical CO2 Brayton Cycle Turbine

2018 ◽  
Author(s):  
Fabrizio Reale ◽  
Vincenzo Iannotta ◽  
Raffaele Tuccillo
Keyword(s):  
Gas Turbines ◽  
Waste Heat ◽  
Numerical Study ◽  
Organic Rankine Cycle ◽  
Energy Systems ◽  
Rankine Cycle ◽  
Energy System ◽  
Small Scale ◽  
Brayton Cycle ◽  
Integrated Energy System

The primary need of reducing pollutant and greenhouse gas emissions has led to new energy scenarios. The interest of research community is mainly focused on the development of energy systems based on renewable resources and energy storage systems and smart energy grids. In the latter case small scale energy systems can become of interest as nodes of distributed energy systems. In this context micro gas turbines (MGT) can play a key role thanks to their flexibility and a strategy to increase their overall efficiency is to integrate gas turbines with a bottoming cycle. In this paper the authors analyze the possibility to integrate a MGT with a super critical CO2 Brayton cycle turbine (sCO2 GT) as a bottoming cycle (BC). A 0D thermodynamic analysis is used to highlight opportunities and critical aspects also by a comparison with another integrated energy system in which the waste heat recovery (WHR) is obtained by the adoption of an organic Rankine cycle (ORC). While ORC is widely used in case of middle and low temperature of the heat source, s-CO2 BC is a new method in this field of application. One of the aim of the analysis is to verify if this choice can be comparable with ORC for this operative range, with a medium-low value of exhaust gases and very small power values. The studied MGT is a Turbec T100P.

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