Why do hospitals have cooling towers?
Cooling towers are primarily used for heating, ventilation, and air conditioning (HVAC) and industrial purposes. Cooling towers provide a cost-effective and energy efficient operation of systems in need of cooling. HVAC systems are used typically in large office buildings, schools, and hospitals.
What are the three types of cooling towers?
The types of cooling towers based on the air flow generation are Natural draft, Mechanical draft, Cross-flow and Counter-flow towers.
- Natural Draft cooling towers use the design and shape of the tower itself to move up the air naturally using fans.
- Mechanical Draft towers tend to use a fan to force the air.
Which is the most efficient cooling tower?
Counterflow (induced draft) systems are considered the most efficient of the two. Crossflow (forced draft) towers distribute hot water perpendicularly to the air flow, while counterflow towers distribute hot water directly into the air flow.
Do cooling towers work?
Cooling tower systems work by using water to extract waste heat from a system and ejecting it into the atmosphere primarily through evaporation. The water is then distributed over the top of the cooling tower where air travels past the warm water causing a portion of the water to evaporate.
Which water is used in cooling tower?
The water consumption consists on the control of the make-up water, the blowdown water and the evaporated water quantities. These three waters determine the cycles of concentration that can be reached in the cooling tower.
How many types of cooling towers are there?
There are three main types of cooling towers that are defined by how water or air pass through them. These types include crossflow, counterflow, and hyperbolic. There are also two varieties classified solely on airflow, known as induced draft and passive draft cooling towers.
How long should a cooling tower last?
Cooling Tower Replacement can be a costly proposition and the average life expectancy of a commercial cooling tower, according to most manufacturers, is 15 – 20 years*, before they need to be rebuilt or replaced. Many cooling towers were installed in 1980’s and are 30 years old now.
Do cooling towers use refrigerant?
Cooling Tower water is circulated through a heat exchanger where refrigerant vapor is condensed and heat is transferred to the water. The purpose of the cooling towers is to cool the warm water returning from the heat exchanger so it can be reused.
What chemical is used in cooling tower?
Organic dispersants – These cooling tower water treatment chemicals can be used to prevent fouling and the accumulation of biofilms. Chlorine dioxide – This chemical can be used as a disinfectant to destroy microorganisms and prevent recurring growth.