Using a evaporative cooling has long been the most energy efficient method of rejecting heat from air-conditioning. When used in conjunction with water cooled chillers it can offer a energy savings of over 20% alone. For every 1 K reduction in condensing temperature reduces the power consumption of a chiller by 3%. Since the wet bulbs use 6 to 12 K less than the dry-bulb temperature, energy savings of as much as 30% are possible. The new systems also leave a smaller footprint so take up less space to install leaving more room for other things. All this means is that using a evaporative cooling system could be the ultimate Green Machine.
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Archive for May, 2009
Cooling buildings while using 30% less energy
Saturday, May 30th, 2009A two way chiller and heater
Saturday, May 23rd, 2009A new design allows modern buildings to have their heating and cooling in one place. The water cooled chiller by Carrier have enabled this possibility. As air conditioning needs climb in the marketplace the need for more efficient methods has been the driving force for the manufacturer. The growing need for air conditioning while reducing energy consumption and associated carbon-dioxide emissions drives the development programmes of major companies. The new chillers that can also offer heat have been in development for a few years now and have finally been submitted for testing and been approved for use.
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A Universities Green Engineering
Saturday, May 16th, 2009The University of Nottingham is adding an extension that is catching the eye of green engineers. The design is being done by Make Architects and is comprised of three landmark buildings, a public boulevard, and a 60 m high sculptural tower. Key to making the project so green is the use of high-performance facades combined with geothermal heating and cooling. A man made lake was used to handle the peak heating and cooling loads. Fresh air is delivered internally via a low-velocity, low-pressure underfloor system. All this and more makes the Jubilee extension a green wonder.
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Data Center peaks in energy performance
Saturday, May 9th, 2009Commercial data centers all need stable power and lots of it. They also need back up power and a back up for that power as the information they house is so important and needs to be up all the time. That does not mean that energy consumption should be a second thought. The North London Data Centre of Fujitsu became only fully certified Tier III data centre in Europe but it also has less than half the M&E services energy consumption of standard designs of such buildings. The company spent over $44 million pounds to achieve the certification but the designer believes it was all worth it and hopes other data centers follow suit.
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Hot water in Modern Buildings
Saturday, May 2nd, 2009As building owners scramble to meet the demands of energy conscious tenants and their ever increasing need for more power once should not overlook the way hot water is supplied. Most buildings have no excuse not to use solar powered hot water heaters that can deliver green friendly hot water to just about any modern building if the design is done correctly. However in large buildings even the best system can only deliver about 30% of all the hot water needs so a back up plan muct be planned out just as carefully. For high hot water use buildings like hotels gas powered hot water heaters are still the answer in both cost and going green mentality.
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