What are the requirements of a modern surface condenser?

REQUIREMENTS OF A MODERN SURFACE CONDENSER The amount of cooling water being circulated in the condenser should be so regulated that the temperature of cooling water leaving the condenser is equivalent to saturation temperature of steam corresponding to steam pressure in the condenser.

How do you size a steam condenser?

THE FORMULA for determining the amount of surface required in a surface condenser is as follows: Q = UA (LMTD) (1) where Q = Heat to be absorbed, Btuh = pounds per hour of steam times 950 Btu per pound; U = Overall heat transfer rate, Btu per (hr) (sq ft) (F); A = Surface required, sq ft; LMTD = Loge mean temperature …

How do you calculate surface condenser efficiency?

Thermal performance analysis. Performance of the condenser is analyzed based on logarithmic mean temperature difference (LMTD) method. Based on LMTD, the heat transfer equation can be expressed as in Eq. (1),(1) Q = k A ( d T m ) where k, heat transfer coefficient; A, tube surface area; Q, heat transfer rate.

How does a surface condenser work?

A surface condenser is a commonly used term for a water-cooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. These condensers are heat exchangers which convert steam from its gaseous to its liquid state at a pressure below atmospheric pressure.

Which is the standard test for Steam Surface condensers?

For higher levels of accuracy, the Alternative Test, contained in the Appendix, can be performed in lieu of this new Test. PTC 12.2 has been the standard performance test code used world-wide wherever power plants are located.

Why is a steam surface condenser important to a power plant?

A steam surface condenser is a critical component of a power plant. The generating capacity of a power plant is dependent on the performance of the steam surface condenser. Maarky condensers are designed to provide the lowest backpressure which, in turn, maximizes the output from the power plant.

Which is better jet or surface steam condenser?

The surface condenser has a great advantage over the jet condensers, as the condensate does not mix up with the cooling water. As a result of this, the whole condensate can be reused in the boiler. This types of steam condenser can be used when the supply of cooling water is limited.

How does a maarky steam surface condenser work?

Maarky condensers are designed to operate reliably in bypass operation. The range of steam pressures and temperatures admitted into the condenser is carefully established to avoid “wet steam” condition.