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Cover Story
The Sustainable Rewards of Green Building
In the previous issue, we talked about the Green Building Movement and how turning green has been the key in reducing buildings’ impact on human health and the environment This issue will look at some of its benefits to building developers, designers, owners, and its occupants and how the benefits of turning Green exceed the costs.
First, let us talk of the costs, which is always a top-of-mind concern for most owners. A common perception exists among people that Green buildings involve huge additional costs compared to conventional buildings. This is not true. Several studies have been done on Green Building System and it has been shown that the energy savings could be as high as 60%, and water consumption reduced by 70%. The lifecycle cost analysis has shown that payback for additional costs of such buildings could be between 3 to 5 years and thereafter the savings accrue.
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Technology Update
R410A Refrigerant in Air-Conditioning Systems
Air-conditioning and refrigeration systems consume energy, so higher energy efficiency results in less carbon dioxide production. Refrigerant choice can greatly influence energy efficiency, thus the industry has to carefully investigate many replacements for R-22 and identify the most environmentally-friendly alternative. For example, the R-410A is a more efficient refrigerant that helps to reduce the overall energy consumption and carbon dioxide (CO2) emissions from power plants providing power to R-410A-compatibile Copeland Scroll compressors. This improved efficiency helps reduce potential global warming emissions.
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Hot News
Interview with Emerson Cup '09 Student Category Winner from De La Salle University - Manila
Stephen Simon Correa, Mark James De Jesus and Roald Yee Dee from De La Salle University won the Excellence Award for the Student Category in the Emerson Cup 2009 in Hyderabad, India last September. Their hands-on experiment of thermal behavior and stratification effect for under-floor air distribution reinforced the need for environment-friendly designs without compromising human comfort.
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Q&A
What makes the Digital Scroll Compressor efficient during part load operations?
Firstly the compressor runs in “unloaded” and “loaded” states periodically during part load operation. The time duration of these states in a cycle depends on modulation percentage required. Low modulation percentage has higher “unloaded” running. In the “unloaded” state there is no pumping of refrigerant, hence very little load on the scrolls leading to very little energy consumption by motor. Tests show that the "unloaded" power consumption is only 10% of full load power. This leads to energy savings during the partial load The second factor is the wide operating range of the Digital Scroll. The capacity modulating range for Digital Scroll is 10% - 100% and its stepless, therefore, even at low capacity requirements, the compressor does not need any hot-gas by-pass or on/off control. Bypasses reduce the efficiency of the system, since the Digital Scroll does not need any bypasses, it results in higher energy savings. Measuring fluctuating power consumption is challenging. The ideal instrument to record the total power drawn in such cases would be a power meter that integrates power consumption over a period of time.
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Marketing Activities
Samsung Introduces DVM Slim In PSVARE Annual HVACR Exhibition
| Samsung Electronics introduced its latest DVM Slim Series during HVAC/R Philippines 2009-12th International Heating, Ventilating, Air-conditioning, Refrigerating, Pumps, Valves & Pipes, Filtration and Purification Technology Exhibition & Conference held at the SMX Convention Center in Manila, Philippines on November 12-15, 2009. Organized by the Philippine Society of Ventilating, Air-conditioning and Refrigerating Engineers Inc. (PSVARE), the event is the country’s leading trade fair in the industry and brought together more than 900 exhibitors from 27 countries and over 50,000 visitors. |
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About Emerson Climate Technologies
Emerson Climate Technologies, a division of Emerson, is the world leader in the design and manufacture of refrigeration and air-conditioning compressors for commercial and residential applications. A pioneer in the heating, ventilation, air-conditioning, and refrigeration industries, the company led the introduction of Scroll technology to the marketplace. Today, more than 60 million Copeland Scroll® compressors and installed in residential and commercial air-conditioning and commercial refrigeration systems around the world.
23/F San Miguel Properties Centre # 7 St. Francis Avenue, Ortigas Center Mandaluyong City, 1550 Philippines
email: Digitalinfo_en@EmersonClimate.com website: www.digitalscroll.com
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