Louvered air center with vortex generating extensions for compact heat exchanger

摘要

A heat exchanger assembly includes an upper and lower manifold. A plurality of tubes have flat sides and extend between the upper and lower manifold. A plurality of fins extend back and forth between and along the flat sides of adjacent ones of the tubes forming a continuous serpentine path. Each of the fins include a plurality of legs that extend between the adjacent ones of the tubes. A plurality of end portions extend along the tube sides so that adjacent legs are connected by one of the end portions to define a tube space between said adjacent legs. Each of the tubes include a plurality of spaced protrusions extending outwardly from both of the flat sides of said tubes into the tube space between the legs. A plurality of spaced projections extend inwardly from said end portions of said fins between said legs for interrupting air flow.