这项研究是一项为期八年的变化分析的结果，该变化源于将一个204单元的公寓楼从计费系统（包括租金中的燃气成本）转换为居民个人支付的这些成本。这项改造涉及在威斯康星州密尔沃基的一处公寓楼安装Btu计量和分配系统。对转换前（1982年6月至1983年6月）以及转换后每12个月的入住率、燃气消耗量和租户成本进行了比较。本案例研究的结果表明，入住率从92%增加到99%，采暖期燃气消耗量比基准期平均每年减少2%，夏季燃气消耗量平均每年减少13%。所有消耗量比较均根据加热度天数和计费周期波动进行了调整。关键词: 仪表，燃气消耗，夏季，冬季，公寓，美国，案例研究，租户，比较，历史，转换，学位日，能源消耗，热量表引用:研讨会，ASHRAE交易，第97卷，Pt。1991年，纽约

This study is the result of an eight-year analysis of changes resulting from converting a 204-unit apartment complex from a billing system that included gas costs in the rent to individual payment of these costs by the residents. This conversion involved the installation of a Btu metering and allocation system at an apartment complex in Milwaukee, Wisconsin. Occupancy, gas consumption, and cost-to-tenant comparisons were made for the period immediately prior to the conversion (June 1982 to June 1983) and for every 12-month period thereafter. The results of this case study indicate an increase in occupancy from 92% to 99%, an average annual decrease in heating-season gas consumption of 2% from the base period, and an average annual decrease in summer-season gas consumption of 13%. All consumption comparisons were adjusted for both heating degree-days and fluctuations in billing period.KEYWORDS: meters, gas consumption, summer, winter, flats, USA, case studies, tenants, comparing, history, converting, degree days, energy consumption, heat meters