4 10 月, 2022

MHI Group Delivers Two Large-Capacity Centrifugal Chillers for Singapore’s Marina Bay District Cooling System

TOKYO, Oct 4, 2022 - (JCN Newswire via SEAPRWire.com) - Mitsubishi Heavy Industries (MHI) Group companies - Mitsubishi Heavy Industries Thermal Systems, Ltd. (MHI Thermal Systems) and Mitsubishi Heavy Industries Asia Pacific Pte. Ltd. (MHI-AP) - have jointly delivered two large-capacity centrifugal chillers for a large-scale district cooling system in Singapore's Marina Bay as part of plans to expand the system. The two chillers, offerings in the "GART series", have a collective cooling capacity of 8,400 refrigeration tons (RT). and will bring the total number of centrifugal chillers provided by MHI Group to the Marina Bay area to 18.The GART-400PLS.SCF model centrifugal chillers each have a cooling capacity of 4,200 RT, the largest capacity of all units delivered to the Marina Bay district cooling system to date. The new units can accommodate the HFO-1234ze(E) refrigerant, which is recognized for its extremely low environmental impact: a global warming potential (GWP) below 1(Note1). In addition, the GART-400PLS.SCF chillers have a near 6% higher rated coefficient of performance (COP)(Note2) and approximately 10% higher integrated part load value (IPLV)(Note3) than earlier models, enabled by the adoption of a tandem operating configuration resulting in reduced energy consumption. Carbon emissions can also be cut by 9%(Note4).Marina Bay is Singapore's central district for business and tourism and is part of the country's plan for a sustainable live-work-play community. Designed, built and operated by SP Group, a leading utilities group and sustainable energy solutions provider in the Asia Pacific, the Marina Bay district cooling system is the world's largest underground district cooling network. The system produces chilled water centrally at two plants, which serves the air-conditioning needs of over 20 buildings in the Marina Bay district. Centrifugal chillers are critical components of the plant as they are the high-efficiency heat source devices functioning at its core.Undergoing continuous expansion, the system will service a total of 28 buildings by 2026 and will reduce approximately 20,000 tonnes of carbon emissions per year.MHI Group was awarded the order based on its technological strength and after-sales servicing capabilities, as well as the environmental performance, economic benefits and high reliability of its centrifugal chillers - as proven through its excellent delivery record.MHI Thermal Systems is Japan's leading manufacturer of centrifugal chillers, offering a wide variety of models for applications including district cooling/heating and factory air-conditioning. The Chiller Business Unit was started in April 2008 in Singapore, and today the team handles related marketing and servicing at MHI-AP throughout Southeast Asia, responding efficiently to local customer needs. Going forward, both companies will continue to meet customer needs and deliver centrifugal chillers with minimal environmental impact to help realize a carbon neutral world.(1) CO2 is assigned a GWP of 1. The lower the GWP factor, the less impact there is on the environment.(2) COP designates energy consumption efficiency calculated based on rated conditions. COP = rated cooling capacity (kW) - power consumption (kW). The higher a system's COP, the more energy-efficient it is.(3) IPLV designates annual energy efficiency taking into consideration fluctuations in load and cooling water temperature over a one-year period of operation. The higher a system's IPLV, the more energy-efficient it is.(4) Estimated with 3 conventional AART -280 PL.EX (cooling capacity: 2,800 RT) models based on the weather conditions in Singapore and the assumed load pattern of district cooling in Singapore.About MHI GroupMitsubishi Heavy Industries (MHI) Group is one of the world's leading industrial groups, spanning energy, smart 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. (via SEAPRWire)

5 4 月, 2022

MHI Thermal Systems to Launch New Series of Large-Capacity Centrifugal Chillers Adopting Low-GWP Refrigerant

TOKYO, Apr 5, 2022 - (JCN Newswire via SEAPRWire.com) - In June, Mitsubishi Heavy Industries Thermal Systems, Ltd., a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), will launch a new series of large-capacity centrifugal chillers adopting the CFC-free(1) HFO-1234yf refrigerant having extremely low environmental impact: zero ozone depletion and a GWP(2) below 1. The series will have two models: the constant-speed JHT-Y and the inverter-equipped JHT-YI.JHT - Y/JHT-YI seriesBoth new models feature capacities ranging from 300 to 5,400 refrigeration tons (RT)(3), with the maximum capacity representing a 400 RT increase over the "GART-ZE/ZEI" series launched in 2017. The JHT-Y and JHT-YI are the first centrifugal chillers with capacities up to 5,400 RT offered commercially in Japan to feature a low-GWP refrigerant. Together with the "ETI-Z" series of centrifugal chillers in the small-to-medium capacity range launched in 2015, MHI Thermal Systems will now offer a full lineup of low-GWP refrigerant models in variations spanning from 150 to 5,400 RT.The new series also adopts an all-new type of compressor. Increasing the variety of models enables selection of the optimal compressor to match the output of the chiller, to realize high performance throughout the capacity range. The constant-speed model features a rated COP(4) of 6.9, which, as before, provides one of the world's highest levels of energy efficiency together with compact size. Chillers in the new series can also be controlled with supreme precision using the latest microcomputer operation panel, and both the constant-speed and inverter models can respond to diverse applications including low-temperature, heat-pump and heat-recovery specifications.The HFO-1234yf refrigerant, which is also used in car air conditioners and vending machines, has an ozone depletion potential (ODP)(5) of zero, its atmospheric greenhouse effect being on a par with natural refrigerants. Because the HFO-1234yf results in no harmful emissions into the atmosphere, requires no capture after usage, and causes no degradation, it is not subject to Japan's Revised Fluorocarbons Recovery and Destruction Law(6). This contrasts with equipment adopting high-GWP refrigerants - for example, HFC-134a, which was widely used before the revised legislation took effect; because such systems have significant adverse impact on global warming, laws now require reductions in both their production and usage volumes. As regulations on the marketing of equipment using high-GWP refrigerants will be tightened further starting in 2025 (in the domestic market), today demands are calling for early upgrading to systems adopting low-GWP refrigerants of the kind used in the new JHT-Y/JHT-YI series.MHI Thermal Systems, Japan's leading manufacturer of centrifugal chillers, has delivered many units for district cooling/heating, factory air-conditioning, etc. Going forward, the Company will continue to focus on developing high-performance products using low-GWP refrigerants, as its way of contributing to environmental protection on a global scale.(1) CFC-free: containing no chlorofluorocarbon component.(2) GWP: global warming potential. CO2 is assigned a GWP of 1. The lower the GWP factor, the less impact on the environment.(3) Capacity above 2,700 RT requires two compressors (parallel type).(4) COP: coefficient of performance as calculated based on AHRI standards.(5) ODP is a coefficient expressing the relative amount of degradation to the ozone layer compared to trichlorofluoromethane (CFC-11), a refrigerant previously in wide use which has a fixed ODP of 1.0. The lower the ODP, the lower the destructive impact on the ozone layer.(6) This revised law, which took effect on April 1, 2015, stipulates rules for the rational use and proper management of fluorocarbons.About MHI GroupMitsubishi 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. (via SEAPRWire)