Plate heat exchangers are widely used in the power industry for efficient heat transfer between different fluids. The PHE is commonly used in power plants to cool down hot water or steam by transferring heat to a separate cooling fluid, such as water or air. This helps in maintaining optimal operating temperatures and improving overall energy efficiency in power generation processes. Plate heat exchangers are preferred for their compact design, high heat transfer efficiency, and ease of maintenance, making them a popular choice in the power industry.

In thermal power plants, plate-to-plate heat exchangers are commonly used in cooling systems. To help condense steam after it has passed through the turbine. The hot steam is cooled down by passing it through the plates, which are in contact with a cooling medium, typically water. This heat transfer process allows the steam to condense into water, which can be reused in the power generation cycle. The efficient heat transfer of plate heat exchangers ensures optimal cooling and helps maximum enhancement of the power plant's efficiency.
Plate and frame heat exchangers also find application in the heating processes of thermal power plants. For example, Plate exchangers are used to preheat the feedwater entering the boiler. The heat exchangers transfer heat from the hot flue gases to the incoming feedwater, increasing its temperature and reducing the energy required to bring it to the desired level.