Free-Piston Stirling Cryocooler (FPSC) for Low-Temperature Applications Down to 110 K

•Development of free-piston Stirling cryocooler (FPSC) with linear compressor.•Demonstration that the FPSC absorbs 1.03 kW heat at 110 K cold-end temperature .•Demonstration that the oil-free compressor works with 0.75 compression efficiency.•Verification of the numerical model with 10% deviation under various temperatures.•Demonstration that the small-scale liquefier works with natural gas analogue fluid.