1. Introduction
Taiwan’s geothermal energy reserves has been estimated to exceed 500 MW. However, geothermal energy (Ozgener et al., 2005) is not tapped as an electricity power source for buildings (Srinivasan et al., 2012) and is merely used for hot springs. Taiwan’s geographical environment is an island with a humid subtropical climate. However, the global climate change in recent years has turned the climate on the island into a dry, hot summer and a wet, cold winter, during which snow is expected in high-elevated mountain areas and the cold temperature brought by the northeastern monsoon can be lower than 10
C. All of these factors contribute to longer hours of using air-conditioned heating systems, thus greatly increasing energy consumption (Kalz et al., 2005). The hotel building used as a case study is a business establishment that requires comfortable 24-h operated indoor temperature and humidity control. If the source of heating is fully provided by electricity, then the operation costs would be too high and so would the installation expenses of the electrical system in the building. To reduce costs, early deployment of heating is based on diesel-fuelled boilers, but this approach has adversely caused environmental pollution because of the emission of SO, heavy metals, CO, and waste heat. The hotel building used in this study is located in the Jinshan District, Taiwan, geographically in the area of the Tatun Volcano distribution. The geothermal layer in this area is near the land
1. IntroductionTaiwan’s geothermal energy reserves has been estimated to exceed 500 MW. However, geothermal energy (Ozgener et al., 2005) is not tapped as an electricity power source for buildings (Srinivasan et al., 2012) and is merely used for hot springs. Taiwan’s geographical environment is an island with a humid subtropical climate. However, the global climate change in recent years has turned the climate on the island into a dry, hot summer and a wet, cold winter, during which snow is expected in high-elevated mountain areas and the cold temperature brought by the northeastern monsoon can be lower than 10C. All of these factors contribute to longer hours of using air-conditioned heating systems, thus greatly increasing energy consumption (Kalz et al., 2005). The hotel building used as a case study is a business establishment that requires comfortable 24-h operated indoor temperature and humidity control. If the source of heating is fully provided by electricity, then the operation costs would be too high and so would the installation expenses of the electrical system in the building. To reduce costs, early deployment of heating is based on diesel-fuelled boilers, but this approach has adversely caused environmental pollution because of the emission of SO, heavy metals, CO, and waste heat. The hotel building used in this study is located in the Jinshan District, Taiwan, geographically in the area of the Tatun Volcano distribution. The geothermal layer in this area is near the land
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