Algae growth can affect the thermal performance of a cooling pond by interfering with water circulation and reducing heat transfer efficiency. When algae multiply rapidly, they can form thick mats on the surface of the pond, which block sunlight and reduce evaporation. Since evaporation is a key mechanism for removing heat from the water, anything that limits it can reduce the pond’s cooling ability. Dense algae growth can also clog intake screens and pipes, slowing water movement and leading to uneven temperature distribution.
This can create warm zones in the pond where cooling is less effective. In some cases, algae can also consume large amounts of oxygen, which may impact aquatic life and contribute to poor water quality. Controlling algae is important to keep the pond operating efficiently. Methods such as aeration, the use of algaecides, or careful nutrient management are often used to limit algae blooms. By keeping algae growth under control, the pond remains more effective at cooling the water and supporting the overall performance of the power plant.
