At ATMOsphere Asia 2015 held in Tokyo from 3-4 February 2015, Mayekawa presented an overview of the government support available in Japan for natural refrigerant systems in industrial applications. End user, Kobeya Baking Company, shared the energy efficiency results of a converted R22 refrigeration system, which was replaced with a NewTon F600 NH3/CO2 solution. In a presentation by Mayekawa Australia Pty Ltd., ammonia heat pumps using rejected heat for hot water gener
In New Zealand, there are are more than 600 Mayekawa industrial compressors operational; three NH3/CO2 cascade systems, which were installed within the last five years; and two 570 kW-h ammonia hot water heat pumps.Application examples have shown that ammonia heat pumps are effective in reducing annual energy consumption and CO2 emissions. The technology can significantly reduce the combustion and usage of water heating fuel sources such as natural gas and coal, to further assist the creation of a low carbon society,” said Millow. “Depending on system operating conditions and applications, a COP in excess of 8.0 is achievable.”
In the future we believe that ammonia heat pumps will compliment or replace conventional boilers because of their high efficiencies when providing hot water by utilising refrigeration rejected heat,” said Millow. “They not only reduce CO2 emissions, but they also offer a lower operational cost when compared to the traditional boiler applications.”
If we consider the amount of heat rejected through condensers of industrial refrigeration systems globally, it’s a massive amount of energy being exported into the air – we need to start recovering some of this heat and using it,” said Millow. “Energy cost and demand is constantly increasing and natural resources are not going to be everlasting. Climate change is a key focus for us.”
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