Table of Contents
How do you increase the efficiency of a condenser?
Reducing cooling water temperatures is a sure-fire way to improve condenser performance: A decrease in cooling water temperature of 10 degrees F can improve the overall heat rate of a power plant by 1\%.
What is the efficiency of condenser?
The thermal efficiency of a condenser is defined as the ratio of actual rise in temperature of cooling water to the maximum possible rise. ts = saturation temp., corresponding to condenser pressure (i.e., vacuum temp.) Numerical Example : Vacuum in a condenser is found to be 708.5 mm Hg .
What is direct contact condenser?
The direct-contact condenser is one in which the coolant is brought into contact with the vapor. The various types of direct contact condensers are: The Spray Condenser. The coolant is sprayed, using nozzles, into a vessel to which the vapor is supplied.
In which type of steam condenser there is no direct contact between the steam and cooling water?
Surface condensers
Surface condensers (or non-mixing type condensers). In surface condensers, there is no direct contact between the exhaust steam and the cooling water.
Which is a surface type condenser?
A surface condenser is a device used in thermal power plants which converts steam into water without any physical contact between steam and coolant. The surface condenser is one of the most important devices used in thermal power plants.
How do you evaluate a condenser performance?
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 direct contact cooler work?
Direct-contact gas coolers allow the cooling medium — usually water — to contact a gas or air stream directly. This cooler design uses the latent heat of evaporation of water to cool the hot gas stream. Quenching a hot gas stream increases the water content in the gas stream and the volume of the stream.
How does a contact condenser work?
The most common form of direct contact condenser is the barometric or low level condenser used in steam power plants. This type of condenser works by having drops of cold fluid falling through a saturated vapor. than 90-95\% by mass of the vapor.
What is the difference between condenser and surface condenser?
Surface condensers (or non-mixing type condensers). In surface condensers, there is no direct contact between the exhaust steam and the cooling water. In jet condensers, there is direct contact between the exhaust steam and cooling water.
What is the difference between surface and jet condenser?
1 Types of Surface Condensers: 1.2. 1.1 Down flow condenser. 1.2….Difference between surface condenser and jet condenser.
| S.NO | Surface Condenser | Jet or Direct Contact Condenser |
|---|---|---|
| 3 | Condensate is reused. | Condensate is wasted |
| 4 | It requires large quantity of circulating water. | It requires less quantity of circulating water |
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