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TOKYO, Mar 11, 2022 - (JCN Newswire) - Mitsubishi Heavy Industries Air-Conditioning and Refrigeration Corporation (MHI-AC&R), a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), has newly developed a large-capacity brine refrigeration system adopting a nitrogen (N2) refrigerant having both zero ozone depletion potential (ODP)(1) and zero global warming potential (GWP)(2). The new system can accommodate even cryotemperature needs, placing it at the pinnacle of industry offerings(3). The Company has just delivered a unit of the new system to The Honjo Chemical Corporation (Neyagawa, Osaka), a manufacturer of organic chemicals and other products, and further sales in the domestic market will be pursued going forward.
The new system can refrigerate at ultra-low and cryo-temperatures (brine temperature: -45℃ to -100℃) through application of MHI-AC&R's proprietary (patented) air refrigeration cycle technology. The unit also features one of the industry's most compact sizes, enabling easy handling and transport. Its compression expansion machine incorporates MHI Group's accumulated high technologies in gas turbines. In addition to capturing the energy generated during air expansion cooling and using it as drive power, stable operation is achieved through the integration of high technologies such as energy-saving inverter control.

The new refrigeration system contributes significantly to curbing global warming through the adoption of N2, a natural refrigerant having zero environmental impact. In recent years, initiatives to prevent climate change have accelerated in momentum. In Japan, since April 2015, when the Act on Rational Use and Appropriate Management of Fluorocarbons(4) went into effect, the low-temperature refrigeration machine market has been called on to adopt low-GWP refrigerants. Internationally, in tandem with implementation of the Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer in January 2019, along with revisions to the Vienna Convention for the Protection of the Ozone Layer, production of chlorofluorocarbon (CFC) substitutes and phased reduction in energy consumption have become mandatory.

Today, because there are few refrigerant options in the ultra-low-temperature refrigeration field, many refrigeration systems continue to use CFC refrigerants. However, demand for CFC-free refrigeration systems is steadily rising in order to mitigate impact on the environment. The refrigerant used in MHI-AC&R's new refrigeration system uses nitrogen, which accounts for approximately 78% of air content, so it is safe both to the environment and to humans. Use of a CFC-free refrigerant also eliminates the inspection procedures mandated under the Act on Rational Use and Appropriate Management of Fluorocarbons, and the new refrigerant is also exempt from the High Pressure Gas Safety Act which regulates the production of high-pressure gases and their consumption, etc. Another benefit is the adoption of magnetic bearings in the system's compression expansion machine, which eliminates the need for lubricating oil and enables a virtually unlimited service life, thereby helping to ease the user's maintenance and operating burdens.

(1) ODP is a coefficient expressing a refrigerant's ozone depletion potential compared to the previously widely used CFC-11 (trichlorofluoromethane), which is assigned a value of 1.0. The lower the ODP value, the smaller is the deleterious impact on the ozone layer.
(2) GWP is a coefficient expressing a refrigerant's global warming potential compared to CO2, which is assigned a value of 1.0. The lower the GWP, the higher is the refrigerant's environmental performance.
(3) Based on MHI-AC&R's in-house survey.
(4) The Act on Rational Use and Proper Management of Fluorocarbons is a totally revised update, carried out in April 2015, to the original Fluorocarbons Recovery and Destruction Law enacted in 2001. Under the revised legislation, commercial refrigeration condensing units and stationary refrigeration units with a refrigeration capacity exceeding 1.5 kilowatt (kW) (approx. 2HP) are required by 2025 to adopt refrigerants with a GWP below 1500 (CO2 =1).

Delivery Overview
Client and destination: The Honjo Chemical Corporation, Naoshima Organic Chemical Plant
(Naoshima-cho, Kagawa-gun, Kagawa Pref.)
Intended usage: Removal of heat of reaction produced during production of organic chemicals
Specification: Brine temperature -80degC (down to -100degC)

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world's leading industrial groups, spanning energy, logistics & infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on spectra.mhi.com.


Copyright 2022 JCN Newswire. All rights reserved. www.jcnnewswire.comMitsubishi Heavy Industries Air-Conditioning and Refrigeration Corporation (MHI-AC&R), a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), has newly developed a large-capacity brine refrigeration system adopting a nitrogen (N2) refrigerant having both zero ozone depletion potential (ODP) and zero global warming potential (GWP).

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TOKYO, Mar 3, 2022 - (JCN Newswire) - Mitsubishi Shipbuilding Co., Ltd., a Mitsubishi Heavy Industries (MHI) Group company based in Yokohama, today held a christening and launch ceremony for the SUNFLOWER KURENAI, the first of two large LNG-fueled ferries being built for Mitsui O.S.K. Lines, Ltd. (MOL). The ceremony took place at the Enoura Plant at MHI's Shimonoseki Shipyard & Machinery Works in Yamaguchi Prefecture. The handover is scheduled for December 2022, following completion of interior work and sea trials. The new vessel will go into service from January 2023 on a regular route between Osaka and Beppu operated by Oita-based Ferry Sunflower Limited, replacing the SUNFLOWER IVORY and SUNFLOWER COBALT ferries in service since 1997.
The SUNFLOWER KURENAI is 199.9m long and 28.0m wide, with gross tonnage of approximately 17,300. The vessel has capacity to accommodate 716 passengers, an estimated 137 13-meter trucks, and roughly 100 passenger cars. The main engine is a high-performance dual-fuel engine - the first of its kind featured on a domestic ferry - that can run on both liquefied natural gas (LNG) and A-type heavy oil. It offers outstanding environmental performance, achieving a 20% reduction in CO2 emissions and close to zero emissions of sulfur oxides (SOx), thereby mitigating environmental impact.

Compared to earlier ferries, the SUNFLOWER KURENAI also features significantly more loading capacity for trucks, a more spacious lounge for truck drivers, and substantially greater space per passenger. Expansive public areas include enlarged bathing facilities, a more spacious restaurant, and an atrium extending through three stories. In these and other ways, the new ferry responds to today's modal shift in the transport industry(Note1) while simultaneously achieving advances in the casual cruise business.

As part of MHI Group's strategic initiatives to advance the energy transition, Mitsubishi Shipbuilding is reducing the carbon footprint of the maritime industry through construction of LNG-fueled ships, as a way of contributing to realization of a carbon neutral society. Japan today is undergoing a modal shift from land transport to maritime transport in a quest to reduce carbon emissions as well as to offset a shortage of long-haul truck drivers and achieve workstyle reform. In tandem with this shift, demand is increasing for ferries and RoRo ships(Note2) and for ever-larger ships. Going forward, Mitsubishi Shipbuilding, as a maritime system integrator, will continue building fuel-efficient and environmentally harmonious ferries and cargo-passenger ships supporting stable operation, working closely with its business partners to solve diverse issues needing to be addressed.

(1) The transition underway in cargo transport away from reliance on trucks and other vehicles, toward increased use of trains and ships, which have a lighter environmental footprint.
(2) Roll-on Roll-off ship: a ship enabling loaded trucks, trailers, and other cargo vehicles to board and disembark directly, under their own power.

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world's leading industrial groups, spanning energy, logistics & infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on spectra.mhi.com.


Copyright 2022 JCN Newswire. All rights reserved. www.jcnnewswire.comMitsubishi Shipbuilding Co., Ltd., a Mitsubishi Heavy Industries (MHI) Group company based in Yokohama, today held a christening and launch ceremony for the SUNFLOWER KURENAI, the first of two large LNG-fueled ferries being built for Mitsui O.S.K. Lines, Ltd. (MOL).