众所周知，使用热电联产系统，联合能源生产效率可以达到80%至90%，而单独供电的效率仅为30%至40%，仅供暖系统的效率仅为80%至90%。一个基本要求是，两种能量形式之间的比率必须在一定范围内。在全年运行期间，平均耗电量在30%到50%的范围内变化，而在温带地区，加热耗电量在200%到300%的范围内变化。夏季“低热负荷”期对负荷平衡特别重要。利用吸收式冷却可以改善这种平衡和总效率。冷却是建筑物夏季运行的另一项要求。 本文讨论了基本考虑和案例研究。单位:SICitation:研讨会，ASHRAE交易，第108卷，第页。2.

It is well known that with combined heat and power (cogeneration) systems one can reach 80% to 90% joint energy production efficiency, while it is only 30% to 40% for separated electrical power and 80% to 90% for heating-only systems. A basic requirement is that the ratio between the two energy forms must be within certain limits.Average electrical power consumption varies within a 30% to 50% wide range, while it does within 200% to 300% —in the temperate zone—for heating, during a full year of operation. Summer—low heating load—period is specially critical for load balance. This balance and the total efficiency can be improved by utilizing absorption cooling. Cooling is otherwise a requirement for summer operation of buildings.Basic considerations and case studies are discussed in the paper.Units: SI