What are the key indicators that are regularly checked and analyzed when the air cooler is in operation?

The performance of the surface cooler is reflected in the vacuum level. However, vacuum is the result of various factors; to facilitate analysis, the following indicators should be checked regularly: (1) temperature rise. It refers to the temperature difference between the inlet and outlet temperatures of the cooling water; when the turbine load remains constant, that is, when the exhaust volume is the same, an increase in this temperature difference indicates a decrease in the amount of water used. The reason may be tube sheet blockage, tube contamination, etc. (2) End difference. It is the difference between the exhaust temperature and the cooling water outlet temperature. An increase in terminal difference reflects a decrease in the heat transfer coefficient, usually due to reasons such as fouling of the heated surface or air leakage. (3) Supercooling degree. It is the difference between the exhaust temperature and the condensate temperature. A high degree of regular subcooling indicates a problem with the structure of the surface cooler; a sudden increase in subcooling is usually caused by leaks of cooling water or air in the surface cooler.