Much of the analysis of the potential to save energy and reduce emissions of greenhouse gases in thebuildings sector has focused on the energy savings that can be achieved through incrementalimprovements in the efficiency of individual energy-using devices (motors, fans, pumps, boilers,chillers) but without changing the way in which they are put together as systems. However, muchlarger savings are possible through changes in building systems, and further, these savings can beachieved at much smaller incremental investment cost and sometimes at lower first cost.
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