Journal
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume 44, Issue 15, Pages 12460-12473Publisher
WILEY
DOI: 10.1002/er.5414
Keywords
desalination; Encontech heat engine; evacuated tube heat pipe solar collector (ETHPSC); exergy analysis; solar energy; thermal analysis
Categories
Funding
- Qatar National Research Fund [NPRP8-547-2-222]
Ask authors/readers for more resources
Utilization of a single evacuated tube heat pipe solar collector (ETHPSC) for the efficient deployment of the solar energy toward driving the Encontech heat engine for reverse osmosis desalination is considered in this study. The effects of the mass flow rate of water mml:mfenced close=) open=(mw & x2d9;, inlet temperature (T- i), solar intensity (I), the ratio of the condenser to absorber area (A( co)/A( abs)), heat transfer coefficients ( h( air) and h( vacuum)) on energy and exergy efficiency (eta, eta( Ex)), the absorber ( T- abs), condenser ( T- co), and the outlet temperature ( T- o) are explored by using a heat transfer resistance model. An open-source SCILAB software was used for performing the computer simulations. The simulation results show that for each h( air) there is an optimum T- i (based on the exergetic performance). The lower h( air) and h( vacuum) appears to be more promising to improve the efficiency and temperature gain ( T- i - T- o) of the ETHPSC. The maximum energetic efficiency of 52.5% is obtained for h( vacuum) (1 W/m(2) K). Obtained results further demonstrate that the energetic and exergetic performances of the ETHPSC are higher at T- i = 50 degrees C. Both energetic and exergetic efficiencies exhibit upper values at A( co)/A( abs) ratio up to 1. Further increment in this ratio up to 3 resulted in a decrease in the efficiency of the ETHPSC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available