Thermal performance analysis of organic flash cycle using R600A/R601A mixtures with internal heat exchanger
2020
In this study, the thermal performance of an internal heat exchanger-organic
flash cycle system driven by geothermal water was investigated.R600a/R601a
mixtures were selected as the working fluid. The effects of the mole fraction
of mixtures on the heat absorption capacity of the heater, the temperature
rise of cold working fluid in the internal heat exchanger, net power
output, thermal efficiency, and electricity generation costs were analyzed. The
net power outputs, electricity generation costs, and thermal efficiency of the
internal heat exchanger-organic flash cycle and simple organic flash
cycle systems were compared. Results showed that the system using theR600a/R601a
mixtures (0.7/0.3mole fraction) has the largest net power output, which
increased the net power output by 3.68% and 42.23% over the R601a and R600a
systems, respectively. WhentheR600a mole fraction was 0.4, the electricity
generation costs reduction of the internal heat exchanger-organic flash
cycle system was the largest (1.77% compared with the simple organic flash
cycle system).The internal heat exchanger can increase the thermal efficiency
of organic flash cycle, but the net power output does not necessarily
increase.
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI