Energy demand varies from season to season and from one part of the day to another. To serve those differing levels of demand, MM21 DHC selectively operates equipment appropriate to each. Heat-source equipment is divided into two types: electrical systems (centrifugal chillers) and gas systems (absorption chillers and boilers). By choosing the best mix of electrical and gas systems for each condition, we strive to reduce material costs and raise operating efficiency.
Plant interconnections via district piping
Since the two plants located in the Minato Mirai 21 Central District are interconnected via district piping, they can share high-efficiency equipment and supply heat with high efficiency.
Highly efficient operation tailored to district demand
MM21 DHC’s installed base of heat-source equipment has sufficient capacity to handle peak demand. In practice, we rarely need to run all units at once.
For cooling, about 80% of annual operating hours are at low load, which is defined as no more than 20% of peak load. During low-load periods, we run the most efficient heat-source equipment, boosting energy efficiency and environmental performance for the entire district.
Optimal plant operation
The Operation Center crew uses their wealth of expertise to maintain optimal plant operation in line with a detailed operation plan.
We are considering adopting AI tools to support plant operation planning and introduction of optimized operational systems to enhance efficiency.
