Technologies for medium-temperature heat-to-power conversion

Abstract

This memo explores the potential and feasibility of different heat‐to‐power technologies for application in industrial surplus heat recovery. Several technologies are described and evaluated qualitatively for typical low‐to‐medium temperature heat sources in HighEFF partner industries. The evaluations are based on published literature as well as research experience at SINTEF Energy Research. RC‐based technologies and absorption cycles were found to have most potential, whereas conventional and novel technologies such as the Stirling engine and PCM technology were found to be less promising. Literature indicates that total system size and heat source temperature are critical to thermodynamic performance, and should be considered in fair comparison between technologies. This memo serves as basis for future activities in WP3.1 Energy‐to‐power conversion, including a quantitative evaluation of promising technologies.