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Installed capacity (supply system)

MM21 DHC Co., Ltd., has installed large-scale, high-efficiency equipment including a large-scale latent heat storage system and a high-efficiency refrigeration system (a 5,000 refrigeration-ton electric turbo chiller), as well as a cogeneration system and continuous, centralized pipe monitoring system. We will continue to implement environmental solutions to meet the ongoing development of the Minato Mirai 21 District.

Facility capacity (as of the end of June 2011)

Equipment name	Specification		Number of units	Capacity
Chiller	Electric turbo chiller	300RT	1	300RT
		3000RT	2	6000RT
	Low temperature electric turbo chiller (1,720 refrigeration-tons when making ice)	2080RT	2	4160RT
	Double-effect absorption chiller	1350RT	3	4050RT
	Steam turbine-driven turbo chiller	8000RT	1	8000RT
Ice storage bath	15000RT×2 (Thermal storage time 3,000 refrigeration-tons × 10 hours) (Heat release time 5,000 refrigeration-tons × 6 hours)		2	30000RTh
Cooling tower	Open mechanical-draft type		8 cells	23000CT
			2 cells	8000CT
Boiler	Flue and smoke tube boilers	9.6 t/h (city gas 13 A)	1	9.6t/h
		15.0 t/h (city gas 13 A)	1	15.0t/h
		24.0 t/h (city gas 13 A)	1	24.0t/h
	Water tube boiler	40.0 t/h (city gas 13 A)	2	80.0t/h
Receiving transformer	Gas-insulated extra-high tension transformer	15000kVA	2	30000kVA

Equipment name	Specification		Number of units	Capacity
Chiller	Electric turbo chiller	3000RT	4	12000RT
		4000RT	1	4000RT
		5000RT	1	5000RT
	Double-effect absorption chiller	5000RT	1	5000RT
		3000RT	3	9000RT
Cooling towers	Open mechanical-draft type		8 cells	28000CT
			4 cells	14000CT
Boiler	Flue and smoke tube boiler	36.0 t/h (city gas 13 A)	1	36.0t/h
	Water tube boiler	40.0 t/h (city gas 13 A)	1	40.0t/h
Receiving transformer	Gas-insulated extra-high tension transformer	20000kVA	1	20000kVA
		30000kVA	1	30000kVA

Cooling capacity	57510RT
Heating capacity	204.6t/h

Fuel and heating/cooling medium

Fuel:

Electricity and city gas, and in emergencies, kerosene

Heating medium for cooling:	Cold water (out): 6℃ / (in) 13℃ (Condensed water)
For space heating: Steam (out): 170 ℃ 0.78 MPa / (in) 60 ℃

Continuous, centralized pipe monitoring system

　The heat supply pipes are joined in loops within the district, and by controlling the heat supply from several plants from a central location, it is possible to achieve highly efficient operation of the equipment. Other benefits include labor savings and a reduction in the capacity of backup equipment.

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