This paper presents the principle of operating, performance parameters, type of structure and technical characteristics, the performance test and the result of industrial run for the first DYFPL-11I13/2.32 low grade remaining heat freon jet type refrigerating machine developed in our country. Through a comparison with experiments in our country and abroad and economie analysis of the behavior of the machine, this machine is simple in structure, convenient for operation, reliable and stable for running with a long service life. It saves electricity and energy.