How are condensers designed?
How are condensers designed?
A condenser is designed to transfer heat from a working fluid (e.g. water in a steam power plant) to a secondary fluid or the surrounding air. The condenser relies on the efficient heat transfer that occurs during phase changes, in this case during the condensation of a vapor into a liquid.
What is the purpose of a surface condenser?
The function of a surface condenser is to create the lowest possible turbine or process operating back pressure while condensing steam. The condensate generated is usually recirculated back into the boiler and reused.
How do you calculate surface condenser efficiency?
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.
What are the two main objectives of the surface condenser?
In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.
How do you calculate condenser?
– The formula for the capacity of condenser is given by C=Ad When A is the area of each plate and d is the distance between the plates.
How do you size a condenser?
How to Determine a Condensing Unit Size
- Find the air conditioner’s condensing unit outside the home.
- Look on the exterior of the condensing unit for its data plate.
- Find and record the compressor’s rated load amperage (RLA).
- Divide the RLA by 5 if it’s a newer unit.
What is the difference between jet condenser and surface 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 |
What are the advantages of surface condenser over jet condenser?
Advantages of surface condenser over jet condenser
- There is a high vacuum obtained compared to the jet.
- Water used for cooling is reused without any treatment.
- For high capacity plants, it is More advantageous.
- In this Condensate losses can be eliminated.
- It required power for air pump is low.
How do you calculate condenser capacity?
What is TTD in condenser?
While TR is an indication of the amount of heat absorbed by the circulating water, TTD is a measure of the efficiency with which heat is transferred from the shell side of the tube to the water side. A lower TTD is always better, and all condensers are designed with a specific design TTD.
How do you find the condenser surface area?
Solution: The surface area per tube will be: Sa = πDL = π (3/12) (10) ft² = 7.854 ft² – (D – tube diameter in ft).
How is condensing unit capacity calculated?
To calculate the size, simply multiply the length times the width of the room or area to be cooled. Then, as a practical number, multiply that total times 25 BTU. This allows ample cooling, whether it is a rainy, moist day or a hot, sunny, humid day.
