A plate heat exchanger in a heat recovery system captures waste heat from sources like exhaust gases or hot fluids and transfers it to a secondary fluid for reuse. The PHE's compact design, featuring thin, closely spaced plates with a corrugated pattern, maximizes the surface area for heat transfer and induces turbulence, which optimizes the heat exchange process. As the waste heat medium flows through the PHE, it warms the plates, and the secondary fluid absorbs this heat as it flows in counter-current or parallel paths. This recovered heat can then be redirected for various applications, such as space heating or preheating process water, making the system more energy-efficient and cost-effective. The PHE's versatility in flow arrangements further ensures that it can be tailored to specific heat recovery needs.