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How to save energy in building



How to save energy in building:




Passive cooling means


The best use of natural resources efficient method of cooling
appropriate for various hot climate types) Passive cooling is a building design
approach that focuses on heat gain control and heat dissipation in a building
in order to improve the indoor thermal comfort with low or nil energy
consumption





Natural Ventilation






Natural respiration is one of the most important ways to reduce energy consumption in buildings. If the air conditioning capacity of the air can be increased to increase the comfort of a hot house, then the need for space-repair equipment is reduced. Natural air intake depends on natural energy: the air from the environment and the explosive power increases due to the temperatures inside the building. The structures are designed to take advantage of your driving power or a combination of both. Although natural respiration is an old technology, it has undergone a resurgence of interest recently, especially in Europe where many research methods have been developed (Ghiaus et al., 2006; Op’t Veld, 2008).





Using less natural air in buildings provides additional benefits without reducing energy consumption. Studies have shown that the acceptable thermal conductivity of natural air structures is much higher than in buildings with standard HVAC systems (De Dear and Brager, 2002). To date, ASHRAE Standard 55 has been revised to include a particularly flexible heating system for ventilated buildings, which allows for indoor temperatures as the outdoor temperature rises. The high level of community control associated with adequately ventilated buildings is also thought to contribute to the adoption of a warm indoor temperature. In addition, natural ventilation systems have been shown to be effective in mechanical systems in relation to Sick Building Syndrome (SBS) complaints and associated symptoms. Seppanen and Fisk (2002), in a review of 18 different SBS studies and ventilation systems, found that the increase in SBS symptoms was 30% -200% higher in air-conditioned buildings compared to natural ventilation. In general, when architects become more satisfied with their working environment, productivity and job satisfaction also increase. Therefore, the benefits of using less natural air are important even without the benefit of energy.





These benefits have led to increased use of less natural air in the construction of green buildings in temperate regions such as the UK and Europe (Roth et al., 2006). In extreme cases, such as warm and humid climates in the United States, studies have shown that systems that use less natural air are less likely to maintain acceptable comfort, except in coastal areas (Emmerich, 2006). In cases where natural respiratory energy is considered sufficient, integrated ventilation, the use of complementary mechanical power and natural energy, provide consistency. Hybrid ventilation allows the building to benefit from the benefits of natural ventilation, with the assurance that the building can operate at the desired comfort temperature during extreme weather conditions. Therefore, a small hybrid air can be used in a variety of climates, where a small amount of natural air is not enough to provide all the space cooling needs. Studies have shown that the use of hybrid ventilation can lead to significant savings of HVAC in warm, humid tropical areas (Axley, 2001), tropical (Haase and Amato, 2009), and arid (Ezzeldin et al., 2009), through natural energy when sufficient but with the help of equipment when needed. The use of indoor hybrid air shows an opportunity to make better use of HVAC energy consumption, by using as much free natural cooling as possible.