Electric heating system is used for antifreeze and heat preservation of closed cooling water system pipes in power plants

Electricity is crucial for modern production and daily life, so ensuring the normal operation of power systems is crucial. Currently, most power plants utilize closed cooling water systems, which circulate and exchange heat, also known as heat exchangers. These systems remove high levels of heat, thereby dissipating heat. Since the circulating water itself is warm, insulation is generally unnecessary. So why is an electric heating system necessary for frost protection?

Power plant closed cooling water systems utilize electric heating for frost protection primarily for the following reasons:

1. Winter temperatures often drop below zero degrees Celsius. During intermittent operation, the circulating water loses heat and freezes, impacting operations.

2. In cold regions or when the cooling water circulation pipeline is long, the circulating water loses heat quickly, potentially causing ice to form within the pipeline.

3. After cooling in the cooling tower, the circulating water is exposed to the low ambient temperature in the pipeline returning to the hot zone, which can also lead to ice formation.

If ice forms in the pipes of a power plant's closed cooling water system, it will affect normal operation, so insulation is necessary. Since the pipes don't have high temperature requirements, a self-limiting heating tape can be used. It automatically adjusts the temperature, eliminating the need for a thermostat if no temperature is required.