2005
“Development of Freon-free-type energy-saving refrigerated air-conditioning system for convenience stores (CVS)” was selected as a NEDO’s subsidized project
August 4, 2005
Development project of Freon-free-type energy-saving refrigerated air-conditioning systems for CVS of Sanden Corporation (COO: Yoshimasa Hayakawa, Head Office: Isesaki-shi, Gunma) was selected by New Energy and Industrial Technology Development Organization (NEDO) on June 23, 2005 as a project covered by its “Subsidy for Priority-Setting-Type Industrial Technology Development” for fiscal 2005.
This time’s target for “Subsidy for Priority-Setting-Type Industrial Technology Development” is a refrigerated air-conditioning system using refrigerant. As alternative chlorofluorocarbon mainly used for refrigerant for this system has high greenhouse effect, it has to be shifted to Freon-free refrigerant (chemical substances without chlorofluorocarbon or refrigerant compounded of substances existing in the nature). Some problems, however, are that Freon-free refrigerant would probably worsen device performance, is flammable, and has the characteristics of high pressure. Sanden’s development project for Freon-free-type energy-saving refrigerated air-conditioning systems, which was selected this time, will serve to solve these problems. Sanden is attempting to supply an economical Freon-free-type energy-saving refrigerated air-conditioning system that has no effect of ozone depletion or little environmental impact, uses Freon-free refrigerant, and is very energy efficient for the food business sector, particularly convenience stores.
Sanden is trying to combine and develop energy saving technologies for its showcases for which basic research has been conducted so far and technologies for energy saving by low- pressure control on refrigerating machines. By this attempt, Sanden aims to turn into reality the use of Freon-free ventilation systems and showcases by CVS as well as more than 15 percent of energy-saving by safe and economical Freon-free systems.
This new system is expected to contribute to the prevention of global warming in two ways: not simply because this does not use any global greenhouse gas, but also because it is energy efficient (electric power) . If this system is used by all CVSs nationwide, a yearly reduction of 390 thousand tons of carbon dioxide and 500 million kilowatts of electric power can be achieved. A period of this research and development will last for three years from 2005 to 2007, during half of which the costs will be subsidized by NEDO. Sanden is planning to commercialize the system in 2009.
