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Cooling Tower (冷卻塔) Problems and Solutions
BY John Herbert | Director
Cooling Tower
Management (冷卻塔管理)
Air-conditioning and process systems use cooling towers to
reject unwanted heat from a process or a building.
These water based cooling tower systems provide owners with significant
benefits over air-cooled systems, including lower energy costs, smaller
size, and lower sound levels.
They use a small percentage of the total energy used in air
cooled systems, and a well-maintained cooling tower enables the entire
cooling system to perform more reliably and ensures that energy users
get the most from their investment.
In 2000, 32% of the total electricity
consumption in Hong Kong was used
to drive air-conditioning [1]. Furthermore, buildings consume approx.
85% of all electricity generated in Hong Kong contributing
significantly to local emissions. Converting to water based technology,
namely cooling towers offers superior energy advantages, reduces power
station pollution and helps keep more of your hard earned
money in
your pocket.

Pilot Zones
Since the launch of the governments cooling tower pilot scheme initiative in 2000, the scheme has been gradually widened covering additional districts, the outlying Islands, and Kowloon.
If your commercial building or unit is within the permitted zone one may apply. Don't forget, you need not convert an entire building, individual premises, such as large restaurants may apply too.
Troubleshooting Cooling Towers
Many cooling tower systems do not operating as intended, and consume more energy than the promised savings indicated - at Kelcroft our unique blend of expertise, identifies and resolves cooling tower problems.
In addition to their primary purpose, cooling condenser water, they are efficient air cleaners. Many systems use the open direct type cooling towers, possibly due to the lower first cost, run into performance difficulties.
Air circulated through the tower is scrubbed, removing the dirt and debris from the air, depositing it into the condenser water. If you have an open direct type cooling tower, that dirt will collect in the condenser water system, forming mud's and sludge.

Of course we should not forget that cooling towers are a known source of Legionella bacteria the cause of Legionnaires disease, and measures must be enforced to mitigate the health and safety risk.
Also experience shows that the majority of cooling towers are installed in correctly, and are not properly integrated into the control strategy to operate at peak efficiency. The tower itself is only one part of the air-conditioning system, the goal to create a reliable energy efficient system including all the components, chillers, pumps and towers.
Cooling towers require management, they cannot and should not
be permitted to operate without regulation maintenance.
Legionella
Cooling tower management is required to mitigate the associated risk of potentially Legionella infection. Click here to read more about Legionella in the built environment.
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Further Information
For further information regarding Kelcroft's services, call today, our Hong Kong office telephone: +(852) 2335 9830, send us a fax +(852) 2335 9862, or send us an email message