Techno-economic potential of low-temperature, jacket-water heat recovery from stationary internal combustion engines with organic Rankine cycles: A cross-sector food-retail study

•Technoeconomic model integrating ICE + ORC engines for CHP applications.•Commercial ICE and ORC engines are evaluated in 30 real supermarket buildings.•Optimal ORC engine capacities in these supermarkets range from 20 to 30 kWe.•ORC engine payback times range from 4 to 9 years depending on the building.•For improved performance exhaust-gas heat recovery should be considered.