economizer sub assembly function/What condensate subcooling/Economizers are heat exchangers function

What is the quality of a subcooled liquid?

If water exists as a liquid at the saturation temperature and pressure with a quality of x 0, it is called a saturated liquid state (single-phase). If the temperature of the liquid is lower than the saturation temperature for the existing pressure, it is called either a subcooled liquid or a compressed liquid.

How many types of economiser are there?

Economizers are heat exchangers that transfer the heat in the flue gas to another medium‚ generally the boiler feed-water‚ although other streams are sometimes used such as make-up water. There are 2 types of economizers: non-condensing and condensing.

What is condensate subcooling?

Condensate subcooling is often of concern, especially during the winter months. It is defined as the saturation temperature corresponding to the vapor pressure at the condenser inlet hood minus the actual temperature of the condensate in the hotwell.
Function of the economizer:
Economizer works as a heat exchanger by preheating a fluid which as a result minimizes energy consumption. In a steam boiler, it heats the fluid and recovered residual heat which in turn is used to preheat the boiler feed water that is ultimately converted to superheated steam.What is condensate subcooling
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