1999 年 64 巻 523 号 p. 109-116
Maintaining the capability of a given system in an emergency has become an issue of paramount importance. As urbanization proceeds, it is crucial to provide safety and to meet social needs by optimizing the infrastructure of the city. This report examined the possibility of installing a disaster proof District Heating and Cooling (DHC) in the 23 wards of Tokyo. The desired capacity for a DHC in an emergency has been determined through a thorough questionnaire. Moreover, this report examined the complex issue of installation from two perspectives with the district's level of danger (DLD), the amount of damage a district would face in a given disaster, such as a fire or an earthquake, in mind. It was necessary to evaluate the value to the customers of the DHC and to consider the public benefit from installing a DHC in the area. This report has studied the possibility of installing a DHC in Tokyo 23 wards with the above factors namely, safety, DLD, customer satisfaction, and public benefit.