District Heating and Cooling in Kansai International Airport

KANSAI INTERNATIONAL AIRPORT Heating & Cooling Supply Co., Ltd.

■District Heating and Cooling System in Kansai International Airport

In supplying heat to facilities on the airport island extending more than 4km from north to south, plants have been set up in three districts with a high concentration of demand-Central, South, and North-with the aim of reducing construction costs and heat loss from pipes, while chillers have been distributed throughout the island. The Central Plant supplies heat to the management and passenger districts, which make up more than 85% of heat demand on the island. Electric centrifugal chillers, ice thermal storage systems, steam absorption chillers, and fire-tube boilers have been set up, and the facility configuration allows for a variety of operations to meet the needs of the situation on hand. The North and South Plants supply heat to their respective surroundings. The South Plant supplies heat to the international cargo, development, and supplies processing (fuel, wastewater and waste treatment) districts, while the North Plant focuses on the supply of heat to the domestic cargo district. The heat source for the north and south districts comes in the form of steam, provided through pipes leading from boilers located in the Central Plant. The steam powers the steam absorption chillers in each plant to provide chilled water, and at the same time, serves as steam for heating purposes.

Customer Steam Cold water

・Passenger terminal district

・Management district

Customer Steam Cold water

・Domestic cargo district

・Observation hall

Customer Steam Cold water

・International cargo district

・Supplies processing district

・Development district

Central Plant

South Plant

Fire-tube boiler

High efficiency electric centrifugal chiller Inverter centrifugal chiller

Steam absorption chiller

Steam absorption chiller

North Plant

Steam

Steam absorption chiller

Brine centrifugal chiller

Ice thermal storage system

Central Plant North Plant Kansai Electric Power South Plant

South Plant supply area

North Plant supply area

Central Plant supply area

Steam tubing

Second phase island

Connecting bridge

Development district

Supplies processing

International cargo district

Management district

Passenger terminal district

Domestic cargo district

Marine access district

Cold water

Type Standard temperature (℃) Pressure (Mpa)

Cold water (feed) 6.0 0.58～0.73 Cooling

Cold water (return) 13.0 0.29～0.49

Steam (feed) Saturated temperature 0.58～0.83 Heating

Condensation (return) 80 0.29

Type Total length

Cold water pipe (feed) Approx. 5km Cooling

Cold water pipe (return) Approx. 5km

Steam pipe (feed) Approx. 9km Heating

Condensate return pipe (return) Approx. 9km

Central Plant

Steam

generated 0.83MPa saturated steam

Steam flow 15t/h×4 units

Central Plant

High efficiency

centrifugal chiller 2,000Rt×2 units

Inverter centrifugal

chiller 1,200Rt×1 unit

Brine centrifugal

chiller

During ice-making 1,100Rt

During compressing 1,500Rt ×1 unit

Central Plant South Plant North Plant

2,000Rt×6 units 1,700Rt×4 units

350Rt×2 units

160Rt×2 units

125Rt×3 units

30Rt×2 units

Central Plant

Format Internal melt ice-on-coil

Capacity 5,000Rth×2 tanks

Electric centrifugal chiller

Fire-tube boiler

Steam absorption chiller

Ice thermal storage tank

■Overview of Heat Supply Facilities

■District piping ■Supply conditions

(Note) 1Rt = 3,024 kcal/h (1kcal=4.18605kJ)

(supply) Cold water(supply)

(supply) (supply)

KANSAI INTERNATIONAL AIRPORT Heating & Cooling Supply Co., Ltd.

Senshu-Kuko Naka 1-banchi, Tajiri-cho, Sennan-gun, Osaka 549-0011, Japan

as of October 2012

■ Company Profile

September 27, 1989 3.3 billion yen

New Kansai International Airport Co.,Ltd. 60.0%

THE KANSAI ELECTRIC POWER CO.,INC. 28.8% Osaka Gas Co.,Ltd 11.2% 16 (as of October 2012) Granted business license (November 28, 1991) under the Heat Supply Business Act. Operates heat supply business on Kansai Internatioal Airport island.

● Established

● Capital

● Investment ratio

● Employees

● Business outline