A U.S. Patent for “Energy Recovery in a Freeze-Drying System” was awarded to SP Industries on September 22nd, 2020. The present invention is a freeze-drying system comprising: a freeze dryer chamber having one or more shelves disposed therein; a refrigerant condenser adapted to condense a hot gas refrigerant to a warm liquid refrigerant; a heat exchanger; a first fluid line from the heat exchanger to the one or more shelves; and a second fluid line, separate from the first fluid line, from the heat exchanger to the refrigerant condenser. Learn More