Passive Cooling Techniques

Topics: HVAC, Building engineering, Energy conservation Pages: 7 (2050 words) Published: February 27, 2013
Arianne I. Ferrer

From: November 2012
To: March 2013

Approach to Energy Efficient Design through Passive Cooling Techniques for Commercial Buildings in San Jose Del Monte, Bulacan

There has been an increasing demand in energy consumption of structures especially air-conditioning system and there is a need/solution on how to minimize/reduce the consumption of energy. In the recent years we witnessed and experiencing energy crisis, especially during summer seasons because of demand usage of air-conditioning systems. With the continuous increasing demand of energy our surrounding experiencing environmental pollution like global warming and ozone layer depletion. Experts like architects and engineers practice the application of Passive Cooling System or Techniques into the buildings. Passive cooling use non-mechanical methods to maintain a comfortable indoor temperature and preventing heat from entering the interior spaces of a building. Passive cooling techniques are usually applied on commercial buildings like malls because it is the main energy consumers. This study focuses on how to conserve energy and how will a design will achieve energy efficiency and save the next generation. Keywords: Energy Consumption, Passive Cooling, Energy Consumer, Energy Efficiency BACKGROUND OF THE STUDY

A recent study Kamal (2012), indicates that last two decades we witnessed a severe energy crisis in developing countries especially during summer season primarily due to cooling load requirements of buildings (see graph attachment). The energy consumption in buildings is quite high and is expected to further increasing because of improving standard of life and increasing world population. Air-conditioning use has increasingly penetrated the market and greatly contributes in the energy consumption. Passive cooling is a means of preventing heat from entering the interior spaces of a building and for removing heat after it has entered such spaces. Passive cooling uses solar energy or other natural cooling sources, like evaporating cooling, passive ventilation to control indoor climates.

The exact application of these strategies and specific design of the systems depends on the prevailing climatic conditions of a location. These techniques can be applied on provinces like Bulacan because this location is good in air/wind movement and it can possess natural ventilation. Passive Cooling engages structures like wind catcher and is sometimes used in combination with evaporative cooling to further maximize cooling potential. Historically there have been two strategies used to reduce energy consumption in times of fuel shortage: ‘energy conservation’ and ‘energy efficiency’. These terms have often been used interchangeably in policy discussions but they do have very different meanings Herring (1996). Energy conservation is generally considered to mean reduced energy consumption through lower quality of energy services, for example: lower home heating temperatures; vehicle speed limits; capacity or consumption limits for appliances, often set by standards. Often it means doing with less, or even without, to save money or energy. It is strongly influenced by regulation, consumer behavior and lifestyle changes.

“Sustainable design is more a philosophy of building than a building style. Most energy Efficiency and other green technologies are essentially “invisible”, that is they can be blended into any architectural style. While green features can be highlighted to demonstrate a building is connection to the environment, they do not have to dominate the design.” –According to Barret (1999)

This statement gives the idea of design elements of a green building that fall into broad categories, energy saving architectural features and an energy conserving building. This approach may change the higher prices of...

References: Brizioli, C.(2011) Passive retrofitting strategies for school buildings in the Mediterranean area. Retrieved from
Edwards, B. (1996) Towards Sustainable Design (European Directives & Building Design) Oxford. Butterworth-Heinemann Ltd. Page 68
Herring, H. & Roy, R. (2007). Technological innovation, energy efficient design and the rebound effect. Technovation. Retrieved from
Kamal, M. A.(2012) An Overview of Passive Cooling Techniques in Buildings. Acta Technical Napocensis. Retrived from

Stitt, F. (1999) Ecological Design Handbook. New York. McGraw – Hill Book Co., Inc. Page5
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