Within the class of compact heat exchanger, the sub-class of high efficiency CHEs is generally characterized by high film coefficients and low fouling factors that both contribute to higher overall U values. While these attributes alone tend to make the CHEs smaller in size than conventional shell-and-tube and other ‘longitudinal’ heat exchangers, the use of close channel spacings also allows this sub-class to get more heat transfer area into a given footprint and a given volume. Read more...