Implementation of a Cogeneration System* (Tenri Site)

At the Tenri Site‚ use of a cogeneration system has allowed for self-generated power supply that accounts for around 24% of the site’s total electric power consumption. The heat generated during the production of this electric power is then used for purposes such as air conditioning and steam-driven electric power generation. The introduction of this cogeneration system has allowed for a 13% reduction in CO² emissions from the site.

* An energy production system that increases energy efficiency by using city gas to produce electric power‚ and employing the resulting waste heat in other applications such as air conditioning‚ hot water supply and steam-driven power production.

Reducing Greenhouse Gases (PFC Gas) (Kameyama Site)

At the Kameyama Site‚ Sharp employs CF⁴ (carbon tetrafluoride)‚ SF⁶ (sulfur hexafluoride) and NF³ (nitrogen trifluoride) in the etching of LCD panels and the cleaning of reactive containers. In order to reduce the amount of these greenhouse gas emissions‚ Sharp has introduced a number of highly efficient gas disposal facilities capable of processing more than 2‚000 liters of gas per minute. The disposal methods employed vary according to the type and characteristics of the gas. More than 90% of the PFC gas emissions are decomposed and disposed of by optimum disposal methods. Furthermore‚ if a problem in the PFC disposal equipment should ever occur‚ Sharp has safety measures in place‚ such as automatically shutting down the production equipment to ensure that greenhouse gases are not released into the atmosphere.

Installation of Photovoltaic Power Systems

Sharp is promoting the use of photovoltaic power systems in all domestic production sites. At the Nara Site‚ Sharp has installed solar panels on the southeast exterior wall of Plant No. 1‚ producing a total power supply of 20kW‚ which is used as part of the production power. Furthermore‚ there is a 90kW solar panel array on the roof of the Technical Center at the Hiroshima Site. This system can produce about 500kWh on a clear day‚ which is equivalent to the power required by an ordinary household for a two-month period.

 

 

Reducing Power Consumption

At SUKM‚ a production site in the UK‚ the electrical machinery is divided into three groups: green‚ yellow and red. This is part of an effort to simplify energy-saving measures so that all employees can tell at a glance which rules apply to which machines. For example‚ machinery in the green group should always be turned off when not in use. It is expected that this measure will reduce energy consumption amounting to 700‚000 kWh per year.
In order to reduce the amount of power used‚ SEEG‚ a sales company in Germany‚ has installed equipment for measuring the energy consumption of electrical equipment such as copiers‚ computers and air conditioners. This provides management with an accurate picture of energy usage. Not stopping there‚ Sharp plans to continue its efforts to reduce the use of electric power in the future.

Supplementary information

Data on greenhouse gases