1999 Volume 24 Issue 74 Pages 113-120
In the previous works, we proposed 10 indices as representative indicator for evaluating performance of district heating and cooling (DHC) system and values of each indicator were calculated for seven types of district heating and cooling system under a certain condition. Firstly in this paper, questionnaire for weighting these 10 indices are set out on professionals of DHC system. 'Economy' and 'Consumption of energy resources' are selected as most important indicators and weights for 'Efficiency of space use' and 'Impact on landscape' are small. However, there is a significant difference of weights between sectors which the replier belongs to. Using these weights and impact matrix which indicate the performances of the seven DHC systems, multicriteria analysis is examined. Concordance analysis method which Nejikamp had developed was used in this study. As a result of the analysis, in spite of high cost, ecological DHC systems which utilize waste heat from garbage incinerator, cogeneration system or heat pump with sea or river water dominate over conventional DHC systems and individual heat source system. However, preference among ecological DHC systems changes according to circumstances.
