環境負荷低減への取り組み

Efforts to Reduce Environmental Burden

The Hoshizaki Group acknowledges that controlling greenhouse gas emissions is an issue directly related to its business. We therefore respect environmental regulations in every country where our products are made and sold, and we vigorously engage in development of environmentally conscious products, with an emphasis on energy-saving features and CFC-free refrigerants.

Preventing Global Warming

Energy-saving emphasis on products

In Japan, the Act on the Rational Use of Energy—known more informally as the “Energy Efficiency Act”—designates some food service equipment as specific equipment under Top Runner Program Standards*1. Hoshizaki strives to develop high-energy-efficiency products that exceed these standards and bring these products to market ahead of the target fiscal year*2. For example, we launched sales of a showcase with enhanced energy-saving features in 2019, a year ahead of the target fiscal year. Also of note, the display panel indicates that the showcase is operating in energy-saving mode, raising awareness among customers using the showcase and highlighting reduced electricity usage.

HOSHIZAKI AMERICA handles development and sales of environmentally aware, highly energy-efficient products, and has maintained its standing as a Partner of the Year - Product Brand Owner under the ENERGY STAR®*3 program for nine consecutive years since fiscal 2012. The newest accolades recognize the positive environmental impact of the Steelheart series, a line of non-CFC (propane) commercial-use refrigerators that reduces annual greenhouse gas emissions by about 25,000 tons, or 21.0%*4, and the KM Edge X series, a line of energy-saving ice machines that contributes to power consumption savings of about 8.5%*4, or US$1.7 million, a year. Both series debuted in 2019. In addition, HOSHIZAKI AMERICA received the Partner of the Year – Sustained Excellence Award for 2020, marking the sixth time that the company has captured this award. It is the highest level of achievement under the ENERGY STAR® program and given to companies that have earned Partner of the Year recognition for several consecutive years.

In Europe, demand for CFC-free products is growing due to the F-gas (fluorinated greenhouse gas) Regulation*5 that takes effect in 2022. In response, Hoshizaki is developing and marketing non-CFC ice machines using R290, a natural, refrigerant-grade propane. Less R290 is needed to charge a cooling system compared with hydrofluorocarbon-based refrigerants. In addition, R290 reduces the impact on global warming. We developed and launched a non-CFC ice dispenser in 2019, and a crescent-shaped ice machine in 2020. Going forward, we will apply new CFC-free refrigerants to our products and expand the types of machines with enhanced energy-saving features.

*1 Requires manufacturers to develop products exceeding the highest level of energy efficiency achieved by products brought to market at a certain point in time.

*2 Fiscal year in which to achieve *1 criteria set by product and category.

*3 Program run by the U.S. Department of Energy and the U.S. Environmental Protection Agency since 1992. The goal is to raise the energy efficiency of equipment and reduce CO2 emissions. Products that meet specific energy efficiency standards are recognized with ENERGY STAR certification and are allowed to carry the associated mark.

*4 Values calculated by Hoshizaki (compared with existing Hoshizaki products)

*5 A regulation prohibiting the sale of equipment that uses alternative CFC refrigerants.

CO2 emissions reduction in domestic production processes

Hoshizaki has taken various steps, including the introduction of energy-saving equipment, improvements in operation of equipment, and enhanced operating efficiency, in both manufacturing departments and administrative departments to reduce unit CO2 emissions from energy consumption during business activities. In parallel, we are working to cut the amount of energy used in transport operations by designing products to be more lightweight and comprise fewer components, and we are also vigorously implementing measures to cut power consumption by improving production processes.

Through these efforts, CO2 emissions in fiscal 2019 reached 12,289t-CO2, or 92.0% of the level posted in the previous year.

CO2 emissions reduction overseas

Western Refrigeration Pvt. Ltd., a member of the Hoshizaki Group in India, installed a photovoltaic system with an area of 5,000m2 on the roof of the Sanjan Plant when that facility was constructed. The system has been in constant operation since April 2017 and provides the power for production processes. It generates 500kWp (kilowatt peak), with an estimated CO2 emissions reduction effect equivalent to planting about 29,500 trees.

Reducing Amount of Waste

Hoshizaki is keen to raise the yield on scrap from metal work site—that is, getting as many components as possible from a single sheet of metal—and is working to improve the yield on scrap from operations using plastic as well in addition to reducing product defects in manufacturing and ensuring meticulous inventory control. These efforts are also made from a 3R (reduce, reuse and recycle) perspective.

The volume of waste in fiscal 2019 reached 3,458 tons, or 98.0% of the level posted in the previous year. But the volume of waste per unit of sales* was up slightly year on year, paralleling a decrease in sales. Also of note, recycling ratios at the Head Office Plant and the Shimane Plant exceeded 99.0%, reflecting wider application of a waste separation and reuse approach.

*Amount calculated by dividing volume of waste (t) by sales (hundred million yen)


Reducing waste along supply chain

As an initiative to reduce the amount of waste generated across the supply chain, we have transitioned away from wood frames in the packaging of most products, in favor of simplified packaging made from cardboard. Some products, however, are excluded from this switch in packaging material. The simple packaging does not cover the whole product, but covers only the upper and lower parts that are easily damaged. By using cardboard boxes, it is possible to minimize waste.

As a result, not only is product loading weight reduced, but packaging is also easier to dispose of when products are unpacked at the receiving sales company. In addition, suppliers ship components to our manufacturing sites in returnable containers, thereby limiting points of cardboard use.

Protecting Water Resources, and Measures to Address Soil and Groundwater Contamination

Reduce water consumption in production processes

At production plants in Japan, no processes use large quantities of water, and the use of water is limited to such purposes as indirect cooling. In addition, all plants are located in areas with low water-related risks, such as drought, and tap water, industrial-use water and groundwater are used appropriately in accordance with the situation that prevails in each area.

Wastewater is appropriately disposed of and discharged into the sewer drainage system or a public water zone drainage system.

Environment-friendly dishwashers

The JWE series of commercial-use dishwashers features technology that reduces the volume of water needed to rinse dishes while still maintaining cleaning performance. At the rinsing stage, the machine draws in clean water, with dirty water from the washing cycle draining out as overflow. This cuts the amount of water used in dishwasher operation and facilitates rinsing with just a small amount of water. In addition, less water means less detergent and less energy consumed to heat the water, thus realizing more environmentally conscious products.

Environment-friendly electrolyzed water generators

Electrolyzed water generators use positive and negative electrodes to electrically separate saline solution into acidic electrolyzed water (hypochlorous acid water) and alkaline electrolyzed water.

Compared with sodium hypochlorite, acidic electrolyzed water has a high sterilization capability even at low chlorine concentration and produces hardly any chlorine odor. It is therefore used to wash foods, disinfect cooking utensils, and clean and sterilize equipment and common spaces in such settings as nurseries, daycare facilities and seniors’ care facilities. In addition, the solution can be prepared at a specific concentration without the need for dilution, which makes cleaning work less time-consuming and reduces the amount of water needed.

The alkaline electrolyzed water has cleansing properties, with the power to break down proteins and emulsify fats, and can be used to clean cooking utensils with less environmental impact than regular cleaning agents.