Before revision: 400px|Types of recuperator, or cross plate heat exchanger A recuperator is a special purposecounter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the waste heat.
After revision: 400px|Types of recuperator, or cross plate heat exchanger A recuperator is a special purpose counter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the waste heat.