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Hong Kong Cooling Towers

cooling tower hk
by John A. 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



Cooling towers use just a small percentage of the 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 History

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.

cooling tower, cooling towers

cooling tower expertise solving cooling tower design and installation problems Hong Kong

Calculating Cooling Tower 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.

The total energy cost for water based cooling tower systems are typically seventeen percent (17%-25%) lower than the dry type heat rejection offering a substantial business advantage, but often considering most AC systems operate at part load, the savings can be significantly more.

Furthermore, if we consider that the real cost of energy never diminishes, since energy charges have generally risen over the last ten years, over the long term 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 noise, lower electrical consumption equates to lower power station emissions, even lowering your environmental footprint.

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