Cleveland-based Heat Exchange Institute (HEI) released the seventh edition of “Standards for Steam Jet Vacuum Systems.” The new edition includes corrections to the previous standard and updated information from upgrades of other reference materials. The standard concentrates on establishing minimum requirements for system construction and the method of performance testing steam jet ejectors.

A nonprofit trade association focused on utility and industrial-scale heat exchange and vacuum apparatus, HEI concentrates its efforts on the manufacturing and engineering aspects of air-cooled condensers, steam surface condensers, closed feedwater heaters, shell-and-tube heat exchangers, liquid ring vacuum pumps, steam jet ejectors and deaerators.