Optimal sizing of biomass-fired Organic Rankine Cycle CHP system with heat storage

2012 ◽  
Vol 41 ◽  
pp. 29-38 ◽  
Author(s):  
Gregor Taljan ◽  
Gregor Verbič ◽  
Miloš Pantoš ◽  
Manfred Sakulin ◽  
Lothar Fickert
Keyword(s):  
Heat Storage ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Optimal Sizing ◽  
Chp System

427 Dynamic characteristic of organic Rankine cycle with latent heat storage

2012 ◽  
Vol 2012.22 (0) ◽  
pp. 331-332
Author(s):  
VanThang Doan ◽  
Sinichiro Wakashima ◽  
Noboru Yamada ◽  
Akira Hoshi
Keyword(s):  
Dynamic Characteristic ◽  
Latent Heat ◽  
Heat Storage ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Latent Heat Storage

Design, Analysis and Optimization of a Micro-CHP System Based on Organic Rankine Cycle for Ultralow Grade Thermal Energy Recovery

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Davide Ziviani ◽  
Asfaw Beyene ◽  
Mauro Venturini
Keyword(s):  
Heat Exchanger ◽  
Simulation Model ◽  
Thermal Energy ◽  
Energy Recovery ◽  
Organic Rankine Cycle ◽  
Residential Building ◽  
Rankine Cycle ◽  
Hot Water ◽  
Solar Thermal Energy ◽  
Chp System

This paper presents the results of the application of an advanced thermodynamic model developed by the authors for the simulation of Organic Rankine Cycles (ORCs). The model allows ORC simulation both for steady and transient analysis. The expander, selected to be a scroll expander, is modeled in detail by decomposing the behavior of the fluid stream into several steps. The energy source is coupled with the system through a plate heat exchanger (PHE), which is modeled using an iterative sub-heat exchanger modeling approach. The considered ORC system uses solar thermal energy for ultralow grade thermal energy recovery. The simulation model is used to investigate the influence of ORC characteristic parameters related to the working medium, hot reservoir and component efficiencies for the purpose of optimizing the ORC system efficiency and power output. Moreover, dynamic response of the ORC is also evaluated for two scenarios, i.e. (i) supplying electricity for a typical residential user and (ii) being driven by a hot reservoir. Finally, the simulation model is used to evaluate ORC capability to meet electric, thermal and cooling loads of a single residential building, for typical temperatures of the hot water exiting from a solar collector.

Part load based thermo-economic optimization of the Organic Rankine Cycle (ORC) applied to a combined heat and power (CHP) system

2013 ◽  
Vol 111 ◽  
pp. 871-881 ◽  
Author(s):  
S. Lecompte ◽  
H. Huisseune ◽  
M. van den Broek ◽  
S. De Schampheleire ◽  
M. De Paepe
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Combined Heat And Power ◽  
Economic Optimization ◽  
Part Load ◽  
Chp System

Performance Simulation of 3-Stage Gas Turbine CHP Plant for Marine Applications

2016 ◽  
Author(s):  
Zhitao Wang ◽  
Yi-Guang Li ◽  
Shuying Li
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Propulsion System ◽  
Operating Conditions ◽  
Intermediate Water ◽  
Performance Simulation ◽  
Marine Applications ◽  
Chp System

Energy saving and environment become important issues in power and propulsion generation industry. One of such examples is the marine transportation where a lot of energy from consumed fuel is wasted in exhaust and emissions are produced in vessel propulsion systems. The focus of this research is to look at a typical marine propulsion system where gas turbines are the prime movers and to investigate the potentials of a novel 3-stage gas turbine combined heat and power (CHP) system for marine applications. Such a CHP system may include a topping gas turbine Brayton cycle, an intermediate water Rankine cycle (WRC), and a bottoming organic Rankine cycle (ORC). In the system, gas turbine is connected with a generator to produce electricity, water Rankine cycle produces superheated steam driving steam turbine for electricity generation and/or for heating, and organic Rankine cycle is used to produce electricity by recycling low temperature energy. A thermodynamic model for the 3-stage CHP system is established to simulate the performance of the system at different power demand operating conditions. The developed performance simulation system has been applied to a typical model vessel propulsion system application. Based on the simulated results, it is evident that compared with a conventional 2-stage CHP cycle where only gas turbine topping cycle and water Rankine bottoming cycle are included, the introduction of the organic Rankine cycle can increase the power output by about 7% and improve the cycle thermal efficiency by about 3.52%.

scholarly journals Studies on the possible application of heat storage devices for powering the ORC (Organic Rankine Cycle) systems

2019 ◽  
Vol 116 ◽  
pp. 00035
Author(s):  
Piotr Kolasiński
Keyword(s):  
Heat Source ◽  
Power Plants ◽  
Heat Storage ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Storage Device ◽  
Heat Sources ◽  
Storage Devices ◽  
Cycle Systems ◽  
Output Characteristics

Some of the heat sources (such as e.g. waste or renewable), are characterized by floating thermal and output characteristics. Thus, their application for powering vapor power plants, such as ORCs, which should utilize the heat sources having steady thermal and output characteristics is difficult. The floating heat source characteristics may potentially be improved using the heat storage devices providing the thermal energy accumulation at stable output and temperature level. Heat storage device can be adopted as a e.g. steady-level heat source for ORC system. In this paper different applications of the heat storage devices in ORCs were proposed and the results of experiments on powering the ORC system via heat storage device are presented. The results showed that adopting the heat storage devices for powering the ORC systems is possible and it is a promising way of utilizing the waste and renewable heat sources featuring floating characteristics.

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