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Cooling Towers
updated: 29 April 2005 BY John Herbert
Water cooled Air Conditioning
Water-cooled air-conditioning (HVAC) systems use equipment
called cooling towers to remove heat from water used to cool
a process or a building.
These water based systems provide owners with significant
benefits over air cooled systems, including lower energy
costs, smaller size, and lower sound level.
Cooling towers use just a small percentage of the total energy used by the
cooling system. 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] Converting to water based system of cooling
towers offers superior energy advantages keeping more of your hard earned
money in your pocket. There also many secondary benefits, the most notable
is the lower electricity consumption reduces power station community
air pollution.
Hong Kong Cooling Tower Pilot Scheme
In June 2000 a co-operative effort between various government
departments introduced the fresh water energy conservation pilot
scheme. Under this scheme, commercial operations may choose to use
fresh water for evaporative cooling, typically employing cooling
towers for air conditioning heat rejection.
Cost Savings
Air conditioning systems account for more than forty percent (40%) of commercial building energy usage in Hong Kong, and upto seventy percent (70%) of electrical usage.
cooling tower expertise solving cooling tower design and installation problems Hong Kong, China, Asia. Cooling towers offer energy efficient solutions lower noise, for air conditioning and process heat rejection systems, at lower cost.
The total energy cost for water based cooling tower systems are
typically seventeen percent (17%) lower than the dry type heat
rejection offering a substantial business advantage.
Furthermore, if we consider that the real cost of energy never
diminishes, since charges have generally risen over the last ten
years, in the long term cooling towers saves the CAPex - the cost
savings can accrue very quickly.
For example, an air conditioning system with a cooling capacity of
600Kw (approx. 170 tons) converting to cooling towers could save you
more than HK$500,000 per year. And assuming a conservative lifespan,
lets say fifteen years, a well designed cooling tower system would
save approximately HK$ 7.5 million.
In addition to the direct cost savings, there are indirect benefits,
reduced electrical consumption equates to lower environmental emissions
at the power station, lowering your environmental footprint.
Pilot Zones
Over the years since the initiative was launched, the scheme has been
gradually widened covering additional districts, Kowloon and the outlying
Islands.
If your non-residential 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 restaurants, etc. may apply too.
Interested?
At the time of writing, the cooling tower installation pilot scheme in
Hong Kong has been extended until May 2006. If you interested to find
out more, call Kelcroft today and we will check if your building or unit
is eligible.
If you are considering new chiller plant or replacement chiller, call
today - we have the skills and experience to plan, manage, and execute
the entire process leaving you free to concentrate on your core business.
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