Performance measurement of a new concept reciprocating piston expander (RPE) using a newly developed small-scale dynamometer unitMNA Mohamad, MF Hushim, WNAW Muhammad, A Razali, A Khalid and MF ZakariaMATEC Web Conf., 135 (2017) 00015DOI: https://doi.org/10.1051/matecconf/201713500015