A laminated spiral heat exchanger (10) in accordance with the invention includes a heat conductive top laminate (30); a heat conductive bottom laminate (36), at least one spiral heat conductive laminate (42), the laminates being joined together to form a heat exchanger core; at least one spiral channel...http://www.google.fr/patents/US4993487?utm_source=gb-gplus-shareBrevet US4993487 - Spiral heat exchanger
