| Title | Study on the Revision of HDD for 15 Main Cities of Korea | 
					
	| Authors | 조성환(Sung-Hwan Cho) ; 김성수(Seong-Su Kim) ; 최창용(Chang-Yong Choi) | 
					
					
	| Keywords | 난방도일 ; 도일법 ; 지구온난화 Heating degree-day ; Degree-day method ; Global warming | 
					
	| Abstract | The purpose of this study is to revise the HDD(Heating Degree-Days) of main cities of Korea because the outside temperature rise have been accelerated by global warming recently. Now our HDD(Heating Degree-Days) for the utility design of district heating system had been `established in 20 years ago. Therefore new heating degree days for main cities of korea had been required and determined using long-term measured outside weather temperature data during 30 years. For the analysis of HDD, five different base temperatures ranging from 24 to 16℃ were chosen in the calculation of heating degree days. And new yearly heating degree days of 15 cities of korea  were given in the tabular form. |