Experimental Study on a Small-scale R245fa Organic Rankine Cycle System for Low-grade Thermal Energy Recovery

Li, Liang; Ge, Y.T.; Tassou, S.A.

doi:10.1016/j.egypro.2017.03.531

Cited by 17 publications

(10 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al [30] conducted an experimental study to inquire the performance of a small-scale ORC system with low grade heat source to produce electricity at various working state. It was found that the fluid of ORC during superheat and pressure at the turbine inlet were two main variables able to be managed with temperature of heat source and speed of the ORC pump.…”

Section: Organic Rankine Cycle With Superheatingmentioning

confidence: 99%

“…It was also found that outlet temperature of evaporator and superheat degree gives good feedback on the efficiency of exergy. Li et al [30] construct an investigation on the experimental of a small-scale ORC system under designated working state for the recovery application of low-grade thermal energy. The reaction between condenser cooling water temperatures and superheat.…”

Section: Organic Rankine Cycle With Superheatingmentioning

confidence: 99%

See 1 more Smart Citation

A Recent Review in Performance of Organic Rankine Cycle (ORC)

Saadon¹,

Islam²

2020

Organic Rankine Cycles for Waste Heat Recovery - Analysis and Applications

View full text Add to dashboard Cite

Increasing emissions of carbon dioxide and fuel prices lead to extra efforts in finding solution to reduce the environment waste heat. One of the solutions emerging is the organic Rankine cycle (ORC) system. It is one of the promising exhaust heat recovery technologies which is widely been used to recover low to mediumgrade heat rather than conventional steam Rankine cycle system. This chapter highlights on the different conditions and configurations of ORCs that are usually been applied. These different configurations have different constraints and usually will be considered based on the applications.

show abstract

Section: Organic Rankine Cycle With Superheatingmentioning

confidence: 99%

Section: Organic Rankine Cycle With Superheatingmentioning

confidence: 99%

A Recent Review in Performance of Organic Rankine Cycle (ORC)

Saadon¹,

Islam²

2020

Organic Rankine Cycles for Waste Heat Recovery - Analysis and Applications

View full text Add to dashboard Cite

show abstract

“…[6] Uilli Drescher et al 2007 A procedure was created to calculate ORC efficiency with sufficient accuracy, based on the design institute for physical properties and also to find appropriate fluids for ORC in biomass power plants. [7,8] Rieder de Oliveira Netoetal et al 2016…”

Section: Ref Nomentioning

confidence: 99%

Design and Development of Innovative Protracted-Finned Counter Flow Heat Exchanger (PFCHE) for an Engine WHR and Its Impact on Exhaust Emissions

Ravi

Pachamuthu

2018

Energies

View full text Add to dashboard Cite

This article describes and evaluates an Organic Rankine Cycle (ORC) for waste heat recovery system both theoretically as well as experimentally. Based on the thermodynamic analysis of the exhaust gas temperature identified at different locations of the exhaust manifold of an engine, the double-pipe, internally–externally protruded, finned counter flow heat exchanger was innovatively designed and installed in diesel engine for exhaust waste heat recovery (WHR). The tests were conducted to find the performance of heat recovery system by varying the fin geometries of the heat exchanger. The effect of heat exchanger on emission parameters is investigated and presented in this work. The experimental results demonstrated that the amount of heat transfer rate, the effectiveness of heat exchange rand the brake thermal efficiency improved with an increase in length and number of the fins. A significant reduction was observed in all major emissions after the implementation of catalytic-coated, protracted finned counter flow heat exchanger. It also demonstrated the possibility of electric power production using steam turbo-electric-generator setup driven by the recovered exhaust heat energy.

show abstract

“…The efficiency of isentropic fluids is higher than that of dry and wet fluids. The design of the small scale Organic Rankine cycle system and the control conditions for low grade heat recovery applications were conducted through experimental investigations by Li et al [6]. For the ORC system, the R245fa was selected as the organic fluid.…”

Section: Introductionmentioning

confidence: 99%

Thermal efficiency evaluation of an organic Rankine cycle with n-pentane as working fluid

Ata

Kahraman

Şahin

2019

International Journal of Energy Applications and Technologies

View full text Add to dashboard Cite

In this study, the effect of evaporation pressure and superheating temperature on system performance was determined in the Organic Rankine Cycle (ORC) model designed using npentane fluid. EES (Engineering Equation Solver) software design using 9 different conditions have been identified. In the first model where the evaporation pressure was between 250 kPa and 400 kPa, the efficiency of ORC was determined under five different constant superheating temperatures. In the second model, the evaporation pressure was determined as 4 different constant values and the temperature of the superheating temperature was changed between 0 o C and 20 o C. N-pentane, which is widely used in ORC geothermal applications, has been determined as working fluid. Within the scope of geothermal applications, the heat source temperature is assumed to be constant at 120 °C. Condenser pinch point temperature difference is taken as 3 o C. As a result of the study, the data obtained from two different models were evaluated separately. When the superheating temperature is not applied, turbine work increases by 35% as the evaporation pressure rises from 250 kPa to 400 kPa. In addition, thermal efficiency also increased by 26%. When the evaporation pressure is constant at 250 kPa, the turbine work increased by 7.32% due to the increase of the superheating temperature from 0 o C to 20 o C. However, with the increase of heat input, thermal efficiency decreased by 1.38%. In the ORC system using N-pentane, it is stated that application of the superheating temperature reduces the performance. In the study, the highest thermal efficiency (12.59%) was achieved at the evaporation pressure of 400 kPa in the case of not applying superheating. The main purpose of this study was to evaluate the thermal efficiency of n-pentane fluid used in the geothermal applications of ORC under different evaporation pressure and overheating temperatures.

show abstract

Experimental Study on a Small-scale R245fa Organic Rankine Cycle System for Low-grade Thermal Energy Recovery

Cited by 17 publications

References 13 publications

A Recent Review in Performance of Organic Rankine Cycle (ORC)

A Recent Review in Performance of Organic Rankine Cycle (ORC)

Design and Development of Innovative Protracted-Finned Counter Flow Heat Exchanger (PFCHE) for an Engine WHR and Its Impact on Exhaust Emissions

Thermal efficiency evaluation of an organic Rankine cycle with n-pentane as working fluid

Contact Info

Product

Resources

About