 A plate heat exchanger, PHE, is a modern efficient type of heat transfer equipment that can increase heat recuperation and energy efficiency. Enhancements to PHE design can be made by applying existing knowledge from literature reviews and experimentally studying different types of PHEs. These include brazing and welding techniques for constructing PHEs, as well as corrugated plate designs and fluid additives like nanoparticles or active coolants. This article was authored by Olga Arseneva, Leonid Tavazniansky, Petro Capistenko, and others.