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February 10, 2015

Hydrogen Supply Equipment for Forklifts Completed at Kansai International Airport
– Demonstration Trial Commenced in a Bid to Construct Optimal Hydrogen Infrastructure –

 

Iwatani Corporation (Head Office : Osaka and Tokyo; President: Masao Nomura; Paid-in Capital: 20 billion yen) has recently completed a series of processes in the development and installation of equipment for supplying hydrogen to fuel cell forklifts used in the Kansai International Airport. Iwatani had been part of the project for the practical utilization of fuel cell forklifts and the development and demonstration of the construction of optimal hydrogen infrastructure, which was adopted by the Ministry of the Environment as a technical development and demonstration project to induce the enhancement of CO2 emission reduction measures for FY2014. In the future, Iwatani will carry out a demonstration trial with a view towards building optimal hydrogen infrastructure in anticipation of the future construction of large-scale infrastructure.

 

■ The offsite supply method adopted for the supply of compressed hydrogen gas

This project is part of the Hydrogen Grid Project, which is included in the Smart Island Vision implemented by New Kansai International Airport Co., Ltd. Together with New Kansai International Airport Co., Ltd., Toyota Industries Corporation, Toyota Motor Corporation and the Osaka Prefectural Government, Iwatani is carrying out efforts aimed at developing a model for hydrogen supply chains at airports.
The introduced hydrogen supply system uses the offsite method, whereby compressed hydrogen is conveyed and supplied in cylinders. The compressed hydrogen in cylinders has a pressure of 15 MPa, which is increased to 40 MPa using a compressor. Then, it is stored in an accumulator. After that, hydrogen refilling is performed with a high pressure hydrogen dispenser by taking advantage of the difference in the pressure in the hydrogen storage tank in the forklift, which is 35 MPa at maximum. Installation of this supply system costs around 60 million yen, and it is partly subsidized by the national Japanese government.

 

■ Contribution to enhanced environmental friendliness, increased work efficiency and space saving

Conventional forklifts are powered by diesel oil and electric power. They have drawbacks in that their operations emit CO2 and that it is time-consuming to recharge their batteries. The fuel cell forklifts to be introduced at the Kansai International Airport are expected to help make it more eco-friendly and work efficient since they emit no carbon dioxide while operation and take only three minutes to refill the hydrogen.

For a large factory that uses electricity-driven forklifts and owns backup batteries, fuel cell forklifts would eliminate the need for backup batteries and lead to space saving.

 

■ Construction of a large liquefied hydrogen infrastructure is planned

The Kansai International Airport is set to start the full-scale introduction of fuel cell forklifts in 2016. In an effort to construct a large-scale hydrogen supply system using liquefied hydrogen by the end of fiscal 2016, it is working to develop a hydrogen supply with high pressure hydrogen piping and to set up equipment for hydrogen supply inside freight sheds. Also, as part of this project, Iwatani is involved in the development and installation of the hydrogen supply system. Conducting a demonstration trial with the small-sized hydrogen supply system that has recently been completed, Iwatani will strive to build a more efficient system at a lower cost in anticipation of the arrival of a full-scale hydrogen society.

 

 

Overview of the hydrogen supply system

 

A Hydrogen dispenser and the control panel

Compressed hydrogen cylinders and an accumulator