Abstract
In the future, cooling needs will increase during the summer months because of an ever-increasing desire for comfort within buildings. Over the last decade, the use of absorption chillers has increased. These chillers require a heat source for their operation. When compared with conventional electrically driven compressor chillers, the electrical energy requirements for absorption chillers are almost negligible. As a heat source, absorption chillers can use fuel gases, fuel oils, steam and hot water. An analysis was made of the influence of the supply and return temperatures on the efficiency of district heating systems (DHSs), with hot-water-driven absorption chillers (HWACs) as a component of a heat-driven distributed district cooliing system. An optimal configuration of HWACs was proposed. A comparison between the efficiency of a DHS and HWACs for a range of hot water supply and return temperatures was made and an optimal operating temperature of 95/80°C was estimated.
Published Version
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