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Improve & analysis energy efficiency in commercial building

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This is because many evidence of energy inefficiency can be found. This study examines the actual situations as well as to identify specific areas that need to be improved in order to achieve energy efficiency in Hong Kong. The forms of primary energy include electricity (which is the most important), natural gas, liquefied petrol gas (LPG), oil products, coal, hydropower, renewable energy (such as solar, wind) and nuclear energy. Final energy uses include air-conditioning and ventilation, lighting, equipment, hot water, cooking, industrial processes and transportation. The research project was carried out during the academic year of 2004/2005.

Staffs from various business organizations (commercial buildings) of which all were Chinese were randomly selected to participate as respondents in this survey. In order to make the data collection in this study feasible, total of two hundred (200) respondents were randomly selected from six different districts of the eighteen districts in Hong Kong. The respondents were made up of 113 females and 87 males. The respondents who participated in the survey gave their oral consent before the study was conducted having been allowed to participate by each of the business organizations relevant authorities.

This means that all the respondents participated voluntarily and the ethical requirements of the Institute of Vocational Education for the collection of personal data were strictly followed. Data collection was carried out in two phases. In the first phase, translation of the questionnaire in Chinese was done and the questionnaire given to the respondents. In the second phase, seven weeks after the first phase, a follow-up survey was done. Hong Kong is one of the most developed cities in China with extremely high population of both people and buildings.

The growing population initiated the demand of numerous houses for both residential and industrial purposes (Chan et al 2009). Due to high growth of buildings, Hong Kong government instigated and adopted energy efficiency platforms and code of building practices to avert any pollution. Buildings are among the dominant energy consumers in most major cities worldwide, including Hong Kong. This makes the enhancing of energy performance buildings a key measure of ensuring energy efficiency in commercial buildings. Energy indicators for Hong Kong are low because of high population density due to compact city, service oriented (due to few industries),

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