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Desalination With a Solar-Assisted Heat Pump: An Economic Optimization

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6 Author(s)
Amin, Z.M. ; Energy Res. Inst., Nanyang Technol. Univ., Singapore, Singapore ; Maswood, A.I. ; Hawlader, M.N.A. ; Al-Ammar, E.A.
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The solar-assisted heat pump (SAHP) desalination, based on the Rankin cycle, operates in low temperature and utilizes both solar and ambient energy. An experimental SAHP desalination system has been constructed at the National University of Singapore, Singapore. The system consisted of two main sections: an SAHP and a water distillation section. Experiments were carried out under the different meteorological condition of Singapore and results showed that the system had a performance ratio close to 1.3. The heat pump has a coefficient of performance of about 8, with solar collector efficiencies of 80% and 60% for evaporator and liquid collectors, respectively. Economic analysis showed that at a production rate of 900 L/day and an evaporator collector area of around 70 m2 will have a payback period of about 3.5 years.

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Systems Journal, IEEE  (Volume:7 ,  Issue: 4 )