How do transformer oil-water heat exchangers function in power transformers?

Transformer oil-water heat exchangers function in power transformers by transferring heat from the transformer oil to water. The transformer oil, which absorbs heat generated during operation, circulates through the heat exchanger. As the oil passes through, it releases heat to the water, which is typically cooled by an external source. This process helps maintain optimal operating temperatures in power transformers, ensuring efficiency and preventing overheating.