Gathering at the latest c-dig meeting in Tokyo, experts in refrigeration, heating, and air conditioning discussed the potential of systems working with CO2 as refrigerant. shecco presented its latest updates on its services.
From 27-29 August, around 40 global experts from leading component and system suppliers, research institutes, and universities took part in a meeting organized by the carbon dioxide interest group (c-dig) in Japan.
Subjects covered latest updates of CO2 Technology for a whole range of applications, from hot water heat pumps to climate control systems in army vehicles and cold storage plants.
The three day event also included several visits to suppliers and research institutes specialized on CO2 systems, among them the Nikkiso Pumps factory, the Waseda University, and the Mycom plant.
CO2 success stories
Klaas Visser from KAV Consulting explained the benefits of CO2 in domestic hot water heating, building air conditioning, and industrial refrigeration. He presented test results showing how applying direct CO2 cooling to water heating can reduce the total energy use significantly. The same, he argued, applies to retrofitting CO2cooling systems to already existing air conditioning systems in buildings. In food processing operations, where simultaneous cooling and heating is required, transcritical CO2 refrigeration coupled with subcritical systems offered a significant potential for energy reduction.
Pega Hrnjak from Creative Thermal Solutions presented his project of converting an U.S. Army 15 kW ECU unit working with R-134a into a CO2 unit. The results proved that using the same unit, evaporator and fans, the converted CO2 unit achieved a 12% higher efficiency and a 66% higher capacity at 52°C outside temperature compared to the baseline system.
Other interventions, from organizations such as Nestlé, Mycom and research institutes, covered:
shecco presented the website R744.com, poised to become the Market Place for CO2 Technology, News & Policy.
The carbon dioxide interest group (c-dig) promotes CO2 as a refrigerant in cost-effective and energy-efficient systems through a regular exchange of information, technical presentations, and research support. At present, it counts 138 members from the academia, manufacturers, contractors, and the media from all around the world.
To obtain the presentations, write to firstname.lastname@example.org