Effect of variable heat input on the heat transfer characteristics in an Organic Rankine Cycle systemMahdi Hatf Kadhum Aboaltabooq, Tudor Prisecaru, Horatiu Pop, Valentin Apostol, Malina Prisecaru, Gheorghe Popescu, Elena Pop, Ana-Maria Alexandru, Cristian Petcu and Cristina CiobanuRenew. Energy Environ. Sustain., 1 (2016) 13DOI: https://doi.org/10.1051/rees/2016021