Economic Analysis of Organic Rankine Cycle Using R123 and R245fa as Working Fluids and a Demonstration Project Report
| Autor: | Min Cao, Xiaoyu Yang, Jingfu Wang, Xinxin Zhang, Hang Guo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Flue gas
Payback period 020209 energy 02 engineering and technology organic Rankine cycle lcsh:Technology Waste heat recovery unit lcsh:Chemistry R123 020401 chemical engineering Economic indicator Waste heat 0202 electrical engineering electronic engineering information engineering Mass flow rate General Materials Science 0204 chemical engineering Process engineering Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes Organic Rankine cycle business.industry lcsh:T Process Chemistry and Technology General Engineering economic performance analysis lcsh:QC1-999 Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Environmental science Working fluid R245fa demonstration project business lcsh:Engineering (General). Civil engineering (General) economic indicators lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 9, Iss 2, p 288 (2019) Applied Sciences Volume 9 Issue 2 |
| ISSN: | 2076-3417 |
| Popis: | The organic Rankine cycle (ORC) is a popular technology used in waste heat recovery and low-grade heat utilization, which are two important measures to solve the problems brought by the energy crisis. The economic performance of ORC system is an important factor affecting its application and development. Therefore, the economic analysis of ORC is of great significance. In this study, R123 and R245fa, two frequently-used working fluids during the transition period, were selected for calculating and analyzing the economic performance of an ORC used for recovery of waste heat with a low flow rate and medium-low temperature. Five traditional economic indicators, namely total cost, net earnings, payback period, return on investment, levelized energy cost, and present value of total profit in system service life, which is a relatively new indicator, were used to establish the economic analysis model of ORC. The variation effects of evaporation temperature, condensation temperature of working fluid, flue gas inlet temperature, and mass flow rate of flue gas on the above six economic indicators were analyzed. The results show that the optimal evaporation temperature of R123 is 125 ° C, the optimal condensation temperature is 33 ° C, and the optimal heat source temperature is 217 ° C. For R245fa, the optimal evaporation temperature is 122 ° C, the optimal condensation temperature is 27 ° C, and the optimal heat source temperature is 177 ° C. The economic performance of an ORC demonstration project was reported and used for comparison with the estimation and analysis. It was found that the single screw expander has an excellent economy performance, which greatly reduces the proportion of expander cost in the ORC system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|