MHI Group's In-house Environmental Awards -- MHI's 2018 Best Innovation Awards --
Mitsubishi Heavy Industries, Ltd. (MHI) has since fiscal 2017 presented the "Best Innovation" awards (Note1), an in-house award program intended to raise awareness of environmental contributions among MHI Group employees, and encourage technological innovation. For the 2018 Best Innovation Awards, MHI selected three products to receive the "Best Environmental Product Award," given for products that help protect the global environment, and one project for the "Best Environmental Practice Award," presented for an activity that contributes to global environmental conservation. The award-winning products and practice are described below.
MHI Thermal Systems, Ltd. / MHI Air-Conditioning and Refrigeration Corporation
This chiller/freezer unit uses only the natural refrigerant CO2 instead of Freon or CFC substitutes, which have a large impact on the global environment. Natural refrigerants have a significantly lower global warming potential (GWP) value than Freon or CFC substitutes, and an ozone depletion potential (ODP) value of zero, allowing for considerable reductions in environmental loads. Annual power consumption is also 16% lower. The product was launched in April 2017. If half of the chiller/freezer units in Japan were replaced with units using natural refrigerants, the curbs on leakage of Freon and CFC substitutes and improved efficiency of devices would reduce CO2 emissions by nearly 4 million tonnes annually.
Mitsubishi Hitachi Power Systems, Ltd. / Mitsubishi Shipbuilding Co., Ltd.
This marine exhaust gas cleaning unit was developed by combining MHI Group's general flue gas treatment technologies and marine engineering capabilities. It will allow operators to comply with tighter regulations on marine SOx emissions that will come into effect in 2020. The system cleans the SOx from exhaust gases when burning fuel oil, and is the world's first system able to treat emissions from the high-output engines used on massive container ships. The product was launched in June 2017. The system can be easily fitted to existing ships, and if utilized by all ultra-large container ships, would clean around 3 million tonnes of SOx annually.
Mitsubishi Shipbuilding Co., Ltd.
These ferries utilize a cutting-edge, energy-saving hull form and proximity twin-screw propulsion system, as well as energy-saving devices such as an air lubrication system and special rudder, making them among the most fuel-efficient ferries in Japan. The volume of CO2 emissions per tonne mile is approximately 30% less than the global average for ferries. The first ship entered service in March 2017, and the second in June 2017. Compared with previous vessels, the CO2 emissions per ship are reduced by around 7,000 tonnes per year. In June 2018, AZALEA was named "Ship of the Year 2017" (Note1) in the large passenger ship category.
Mitsubishi Turbocharger Asia Co., Ltd.
The solar power generation facility installed in March 2018 on the roof of Mitsubishi Turbocharger Asia's factory in Thailand is capable of generating 5.8 GWh of electricity annually. This rooftop installation is the most extensive within MHI Group, and has one of the largest power outputs in the ASEAN region. Installation on the roof also helps lower the temperature inside the factory, and power consumption for air conditioning. The project, which provides a CO2 reduction of nearly 3,000 tonnes annually and helps cut greenhouse gas emissions, received an award from the Thai government.