From Haneda Environmental measures for the future
Tokyo is the world-leading advanced environmental city. As the entrance to Tokyo, the International Passenger Terminal of Haneda Airport is improving energy efficiency and reducing CO2 emissions as an environmentally friendly eco-airport. The eco-airport is aiming to realize a low-carbon society, a recycle-oriented society, and a society which coexists with nature through these efforts.
What is Eco Airport?
Eco-airport is an airport that is implementing measures to conserve the environment and to produce a healthy environment in and around the airport.
The International Passenger Terminal of Haneda Airport organized the Tokyo International Airport Eco-Airport Council with airport administrators and relevant airport businesses under the Eco-Airport Guideline established by the Ministry of Land, Infrastructure, Transport and Tourism. The Council is implementing various environmental measures, including the improvement of energy efficiency and the reduction of CO2 emission.
※Source: March 2014 Eco-Airport Guideline, Civil Aviation Bureau
Energy conservation and CO2 reduction of Haneda Airport International Passenger Terminal
Haneda Airport International Passenger Terminal is improving energy efficiency and reducing CO2 emissions by combining the latest energy conservation technologies with natural energies (light, wind, heat, water, and vegetation) and reasonably and efficiently using energy supplies and energies.
Efficient production of energy
Photovoltaic power generation [Mega Solar]
Shade is rare at an airport because high-rise buildings are not located near an airport. Thus, an airport is a suitable site for installing solar power generation facilities. Using this characteristic, about 1,050 kW of solar panels are installed on the rooftops of the terminal buildings to generate power within the airport and reduce CO2 emissions.
Gas cogeneration system
Gas cogeneration system is a distributed power generation system to generate electricity on site using environmentally friendly city gas. The heat generated during power generation can be effectively used for air conditioning and heating water. Thus, this system realizes high energy efficiency. The use of commercial power can also be reduced by connecting the generated electricity to commercial systems. By doing so, this system reduces the consumption of commercial power and lowers the peak consumption of the commercial power.
Waste heat recovery absorption water heater ‐chiller
The CFCs used as the refrigerant of air conditioning accelerate global warming. Thus, the use of CFCs is now being strictly regulated. The gas absorption water heater ‐chiller is an environmentally friendly air conditioning system as it uses water as the refrigerant. It drastically reduces the power consumed for air conditioning because it uses the waste heat from gas cogeneration systems and city gas as the power source. This system thus improves energy efficiency and reduces power consumption.
his is a high-efficient power source system which uses Freon refrigerant. It compresses the refrigerant and creates efficient circulation to generate high refrigeration capacity. The system realizes high energy efficiency and low cost by using inverter turbo refrigerator which delivers optimal operations depending on the thermal load.
Chilled water storage system
The idea is to produce a large amount of cold water during the nighttime when the electricity cost is low and reduce the electricity consumption during peak hours in the daytime. This method enables effective operation and reduces costs.
Double-bundle heat pump
Waste heat is usually released to the atmosphere through the radiator (outdoor unit). This system collects such waste heat and produces cold and heat at the same time. It efficiently uses energy by collecting heat during the cool season and cold during hot season.
Efficient use of energy
Air Breeze Tower/Air Conditioning with Floor Outlet
The ceiling in airport terminals is high, and the height of the ceiling at the third floor departure lobby is up to about 20 meters. The air conditioning is provided only at zones occupied by people to realize efficient air conditioning rather than air conditioning the entire area of a large space.
Cool and warm pit
The ambient air taken in for air conditioning is pre-cooled in summer and pre-heated in winter by letting the air go through the underground pit. The use of geothermal energy results in the reduction of energy used for cooling and heating.
Natural lighting and light sensor
Natural light is used as often as possible through top lights and high-side lights. The illumination control provides two-level operation including at 500 lx and 800 lx to turn the light on only when necessary to reduce wasteful use of energy.
Fluorescent lamps are being replaced with LED lamps to reduce power consumption and CO2 emissions. Conventional lamps are being replaced with LED not only in lighting but also in other places such as information panels and guide signs.
Natural ventilation system
The airport has a system of releasing air near the ceiling that is heated by direct sunlight through a hollow section in the large ceiling. The insulation effect reduces the radiation heat from the ceiling and drastically cuts the cooling load.
Insulation and shading system
Low-E double-pane window glass is installed to reduce solar radiation heat from the sun and the heat input and heat radiation through window glass. The double-pane window glass provides higher insulation performance and thus can reduce the energy loss of cooling and heating.
Water discharged from kitchens, untreated water, and miscellaneous wastewater generated from terminals as well as rainwater are treated and used as greywater to effectively use water resources. The produced greywater is used for flushing toilets.
Green rooftop・Green walls
Plants are being planted in various areas of the airport such as the rooftop and on the walls to realize an eco-airport and to reduce the heat island effect. The plants are an effective environmental measure, such as an energy conservation measure, and also effectively create spaces surrounded with greens.
Central monitoring of energy operations
Building Energy Management System (BEMS) is constantly monitoring the operations of facilities related to electricity, heat source, air conditioning, sanitation, and transportation. The operation data obtained through the BEMS are used as a reference to explore energy conservation measures in energy meetings. The order of operation and energy balance are reevaluated based on the data to improve daily energy conservation activities and plan facility maintenance and equipment update.