Method of monitoring condenser performance and system therefor

A method of monitoring the performance of a condenser having a plurality of cooling tubes, comprising the steps of:

• (i) sensing the inlet and outlet temperatures and the flow rate of the cooling water supplied into the condenser while sensing steam pressure or stem temperature in the condenser;
• (ii) calculating the total heat load of the total cooling water tubes based on the inlet and outlet temperatures and the flow rate of the cooling water respectively obtained in the first step;
• (iii) calculating the overall heat transmission coefficient of the total cooling water tubes based on said total heat load and said sensed values;
• (iv) calculating the cleanness of the cooling water tubes of the condenser based on said overall heat transmission coefficient;
• and
• (v) controlling the performance of the condenser based on the values representing the cleanness of the total cooling water tubes.

A method of monitoring the performance of a condenser comprising the steps of:

• (i) sensing the value of the heat flow of the cooling water tubes transmitted through the walls of the cooling water tubes of the condenser, and sensing the inlet and outlet temperatures of the cooling water flowing in the cooling water tubes of the condenser, the cooling water flow rate and a steam pressure or steam temperature in the condenser;
• (ii) calculating the heat flux based on the values of the sensed heat flow of the cooling water tubes;
• (iii) calculating the heat transfer rate of the cooling water tubes based on said heat flux value and said sensed values;
• (iv) calculating the cleanness of the cooling water tubes of the condenser based on said heat transfer rate of the cooling water tubes;
• and
• (v) controlling the performance of the condenser based on the values representing the cleanness of the cooling water tubes of the condenser.

A system for monitoring the performance of a condenser comprising:

• means including a plurality of cooling water temperature sensors for respectively sensing the inlet temperature and the outlet temperature of the cooling water supplied in the condenser having cooling water tubes, cooling water flow rate sensor means for sensing the flow rate of said cooling water, a condenser steam temperature sensor or condenser steam pressure sensor, and total heart load calculating means for calculating the total heat load of the total cooling water tubes of the condenser based on the values obtained by said cooling water temperature sensors and the cooling water flow rate sensor means;
• overall heat transmission coefficient calculating means for calculating the overall heat transmission coefficient of the total cooling water tubes of the condenser based on the total heat load of the total cooling tubes calculated by said total heat load calculating means and the values obtained by said plurality of sensors;
• and
• tube cleanness calculating means for calculating the cleanness of the total cooling water tubes based on the overall heat transmission coefficient obtained by said overall heat transmission coefficient calculating means.

A system for monitoring the performance of a condenser comprising:

• heat flow sensor means provided on the cooling water tubes of the condenser for sensing the heat flow transmitted through walls of the cooling water tubes, means including a plurality of cooling water temperature sensors for respectively sensing the inlet and outlet temperatures of the cooling water flowing through the cooling water tubes of the condenser, flow rate sensor means for sensing the flow rate of said cooling water, means including a steam pressure or steam temperature sensor for sensing the steam pressure of the steam temperature in the condenser;
• heat flux calculating means for calculating the heat flux of the cooling water tubes based on the value of the heat flow determined by said heat flow sensor means;
• heat transfer rate calculating means for calculating the heat transfer rate of the cooling water tubes based on the values obtained by said plurality of sensors;
• and
• tube cleanness calculating means for calculating the tube cleanness based on the heat transfer rate obtained by said heat transfer rate calculating means.