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Contributions by products and services associated with power consumption

Contributions by products and services associated with power consumption

With regard to product groups such as air conditioners and LED lights for which CO2 emissions during use account for the largest percentage of emissions generated throughout product lifecycles, improving energy-saving performance leads to significant reductions in CO2 emissions. Toshiba Group helps reduce CO2 emissions by developing and providing advanced energy-saving technologies.

Percentages of CO2 emissions from the lifecycle stages of Toshiba Group's products
[Image] Percentages of CO2 emissions from the lifecycle stages of Toshiba Group's products

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Case Study 1: High-efficiency air-cooled heat pump chiller

Toshiba Carrier Corporation


Universal Smart X EDGE series are high-efficiency, high-performance, compact air-cooled heat pump chillers equipped with the world's largest-class*1, newly developed, high-capacity DC inverter rotary compressors. We optimized compressor tuning and dramatically enhanced the cooling cycle, including the heat exchangers and fans. As a result, EDGE series AIREDGE 60-horsepower standard model IPLVc*2 achieves leading performance of 5.3, while the high-efficiency model offers performance of 6.0. These new products reduce CO2 emissions by approximately 62% compared to conventional Toshiba Carrier's products (FY2000 products). Also, the original edge form reduces product size and makes it easier to install the product by reducing the space for water piping.

As of December 2016; with an air-cooled heat pump chiller. Data compiled by Toshiba Carrier Corporation
IPLVc (Integrated Part Load Value, Cooling) that indicates operation efficiency is also based on performance during low-load times. Greater values indicate higher energy efficiency.

Case Study 2: LED floodlight with high energy-saving performance for stadiums and other large outdoor facilities

Toshiba Lighting & Technology Corporation

Lighting systems (floodlights) installed in stadiums and other large outdoor facilities must provide large amounts of light along with high central luminous intensity and high lighting rates*1. Toshiba Lighting & Technology Corporation commercialized an LED floodlight that can replace the conventional 2-kW metal-halide stadium floodlight which hitherto had the largest output capacity. The new floodlight achieves the industry's highest specific energy consumption efficiency (108.3 lm/W (narrow-angle lighting))*2 as an LED floodlight providing a large amount of light. It reduces the amount of electricity consumed by the entire stadium-lighting system by approximately 47% compared to conventional lighting apparatuses (based on a case study of floodlights delivered to Oita Bank Dome). The new floodlight has also been designed to be environmentally conscious in various aspects, including extending lighting sources’ product lives, reducing lighting devices’ weights, and avoiding excessive illumination in areas around facilities.

[Image] LED floodlight (LEDS-12503NN) equivalent to a 2-kW metal-halide lamp[Image] Floodlights installed in Oita Bank Dome
LED floodlight (LEDS-12503NN)
equivalent to a 2-kW metal-halide lamp
Floodlights installed in Oita Bank Dome

The ratio between the luminous flux inside a lighting device and the luminous flux that effectively reaches the lighted surface. The higher the lighting rate, the more effectively light is used.
As of November 2016; data compiled by Toshiba Lighting & Technology Corporation

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Case Study 1: Energy-saving solutions for rolling stock

Toshiba Group is working to further improve the efficiency and energy-saving performance of various devices and systems used in rolling stock.

We are also striving to systematically reduce energy consumption from multiple perspectives, including reducing the number of man-hours and parts required for replacement as well as downsizing products using new system module structures.


Energy-saving features
  • Greatly reducing the energy consumption of all system devices
    Example: Reducing energy consumption by 39% with a Permanent Magnet Synchronous Motor (PMSM) system*1
  • Monitoring, analyzing, and automatizing train operations to support energy- efficient driving
    Example: Reducing energy consumption by 10% with automatic train operation*2
Making maintenance simple and extending service life
  • Contributing to developing easy-to-maintain rolling stock by simplifying conventional operations
Reducing size and weight
  • Reducing the size and weight of equipment by adopting new systems/parts and using modular structures
Based on field test results for Toshiba's PMSM and Induction Motor (IM)
Based on results of simulation and field tests (over 10%)

Case Study 2: Highly power-efficient SSDs for the enterprise

[Image] Highly power-efficient SSDs for the enterprise

Advancements in cloud services and the widespread use of big data in recent years have raised concerns over the exponential increase in the amount of information saved on large-scale storage systems, most typically those of datacenter systems. Toshiba Group provides high-performance, highly power efficient SSDs for the enterprise, thereby contributing to reducing the power consumption of storage systems and various servers in datacenters and at other sites.

Energy-saving features
  • Realizing high-speed data transfer by using the latest interface standard, NVMe*
  • Using Toshiba NAND in combination with an originally developed controller to reduce power consumption per MB/s in write operations by 49% compared to competitors' products
NVMe: Non-Volatile Memory Express, an interface optimized for non-volatile memory
NVMe™ is a trademark of NVM Express, Inc.

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Case Study 1: SMARTRECEIPT® electronic receipt system

Toshiba TEC Corporation

SMARTRECEIPT® is a service that provides benefits to customers and also helps mitigate climate change. When a customer pays at the register, SMARTRECEIPT® digitizes the transaction data and manages it on a cloud server instead of printing a receipt. The service provides customers with electronic receipts by reading barcodes that are displayed in a smartphone application or by reading membership cards at checkout counters. After payment, customers can access their receipts at any time from any location via their smartphones. In addition, the solution can also be used to provide services using electronic data, such as campaigns targeting customers who purchased certain products. SMARTRECEIPT® utilizes datacenters and smartphones. By eliminating paper usage through digitization, it mitigates climate change and reduces resource consumption, thereby curbing CO2 emissions by 13% according to our calculations for a model case.

Screen images


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Case Study 1: Expanding the application of heat pumps to high-temperature heat sources

Toshiba Carrier Corporation

Heat sources with temperatures close to 100°C are required for many processes, including food processing, chemical manufacturing and coating. Conventional systems use boiler steam as such a heat source. Although using a heat pump as a heat source can greatly reduce CO2 emissions, for general heat pump chillers it is difficult to realize high temperatures exceeding 55°C.

To overcome this drawback, Toshiba Carrier Corporation has developed a circulated heating heat pump that provides a high-temperature, large-capacity heat source by using a double refrigeration cycle with two different types of coolants. Using this heat pump system as a heat source in processes that previously have been carried out by boiler steam can reduce CO2 emissions by more than 50%.

Double refrigeration cycle
[Image] Double refrigeration cycle

This figure is simplified. The heat pump is equipped with parts not depicted in the figure, such as a four-way switching valve and container.

[Image] CAONS700/CAONS140/CAONS45

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