Applications of cooling tower
The applications of the cooling tower include the
following.
Traditional HVAC cooling
systems are used in hospitals, malls, schools, and office buildings. Much
larger towers are used to reduce the temperature of circulating water in oil
refineries, petrochemical plants, natural gas processing plants, and other major
industrial plants to process huge volumes of heated water.
1). Differentiate between natural draught fan and forced and induced draught fan
In
natural draught – Airflow is natural and based on exit and inlet conditions of
the air. No power required other than pumping water to the tank
In
forced draught – Air is blown through a fan located at the top of a tower in
the air inlet. Additional power is required to operate the fan.
2).
List the applications of cooling tower
Traditional
HVAC systems are used in schools, hospitals, offices, etc.
Large
towers are used in industries like petrochemical, steel, nuclear plants, etc.
3).
What is the use of drift eliminator in the cooling tower?
The
drift eliminator controls the loss of water by capturing droplets and mist and
prevents from entering into the atmosphere.
4).
Give some advantages of using hyperboloid structure in cooling towers
The
unique hyperboloid structures are often used for constructing tall towers as it
provides –
- Superior strength
- Resistance to external forces
- Accelerates the upward movement of air
- Ample space and wide base
5).
Cooling towers can be constructed using either FRP (fiber reinforced plastic)
or RCC. Which one do you think is apt and why?
Compared
to FRP and RCC, FRP is preferred as it offers significance through life cost
savings, lightweight materials, have longer service lives, lower replacement
frequency, high durability in corrosive environments and require little
maintenance.
RCC
consumes time to attain full strength, heavier to transport, needs skilled
labor and consumes time to complete the construction of the
cooling tower.
6).
Give some applications of field erected type cooling tower.
Field
erected type towers are much larger and they are used in power plants, steel processing plants, petrochemical plants, and
petroleum refineries.
7).
Classify the cooling tower concerning heat transfer methods
Based
on heat transfer methods, the classification includes –
- Wet towers (or open circuit cooling towers)
- Closed-circuit towers (or fluid coolers)
- Dry cooling towers
- Hybrid cooling towers
8).
Differentiate between crossflow and counterflow type
In
the Crossflow type, the airflow is directly perpendicular to the water flow.
In
a counterflow type, the airflow is directly opposite to the water flow.
