[1] Royal Inst Technol, Sch Chem Sci & Engn, S-10044 Stockholm, Sweden
[2] Malardalen Univ, Sch Sustainable Dev Soc & Technol, S-72123 Vasteras, Sweden
[3] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
[4] Natl Univ Singapore, Energy Studies Inst, Singapore 119620, Singapore
[5] Univ Perugia, Dipartimento Ingn, I-06125 Perugia, Italy
[6] Univ Pretoria, Ctr New Energy Syst, Dept Elect Elect & Comp Engn, ZA-0002 Pretoria, South Africa