为了提高能源效率和经济性，商业建筑项目现在通常采用集中共享热源，如区域供暖和制冷（DHC）系统。为了保持效率，对冷却器和热泵的维护进行精确的监控和计划至关重要。低性能运行会导致能量损失，而不必要的维护成本高昂且浪费。工厂主管负责安排和监督维护。有助于分析系统退化的建模系统对这些任务非常有益。拓扑案例建模（TCBM）（Tsutsui等人1993年；Tsutsui 1995年）是冷水机组性能恶化监测的有效工具。使用记录的历史性能数据描述TCBM及其在此任务中的应用。关键词:1996年，吸收式制冷机，监测，计算，性能，区域供暖，精度，制冷机:研讨会论文，乔治亚州亚特兰大，1996年

To increase energy efficiency and economy, commercial building projects now often ulitise centralised, shared sources of heat such as district heating and cooling (DHC) systems. To maintain efficiency precise monitoring and scheduling of maintenance for chillers and heat pumps is essential. Low-performance operation results in energy loss, while unnecessary maintenance is expensive and wasteful. Plant supervisors are responsible for scheduling and supervising maintenance. Modelling systems that assist in analysing system deterioration are of great benefit for these tasks. Topological case-based modelling (TCBM) (Tsutsui et al 1993; Tsutsui 1995) is an effective tool for chiller performance deterioration monitoring. Describes TCBM and its application to this task using recorded historical performance data.KEYWORDS: year 1996, absorption chillers, monitoring, calculating, performance, district heating, accuracy, chillers