22 May 2008

A STUDY ABOUT IMPROVEMENT OF EFFICIENCY OF A SEWAGE HEAT UTILIZATION SYSTEM


We investigate an optimum design and operation of a sewage heat utilization
system by extracting and analyzing operational data on the Makuhari High-Tech Business
Area District Heating and Cooling System (hereafter referred to as “Makuhari DHC System”).
The analysis revealed that a constant high effect can be obtained in terms of different
cold/hot heat ratios required by consumers, and that the effectiveness of using sewage as a
heat source would be increased.
Furthermore, compared with “the conventional concentrated heating system”, “a distributed
heat pump systems with separate heat sources water” uses sewage more effectively.