R744 is becoming more popular for data-center cooling due to its environmental benefits, smaller footprint and energy savings, according to the manufacturer.
German OEM TEKO Refrigeration has introduced a patent-pending heat exchanger, the TECO2nditioner, which is designed to reduce the suction and discharge temperatures of medium-temperature compressors in its transcritical CO2 booster systems. This in turn lowers and stabilizes oil temperatures, maintaining lubrication and extending the lifetime of the compressors. The TECO2nditioner, unveiled at the Chillventa trade…
The technology is used in its Costan-brand Tortuga Reverse Island units, which have been installed at a new Edeka Treugut supermarket in Berlin.
Sent to German authorities, the statement says natural alternatives to f-gases have been proven over time.
There is no conflict between an ambitious phase down of f-gases and an aggressive rollout of heat pumps, the statement says.
Multiple examples are unveiled by HVAC&R engineering specialists Frigo-Consulting.
The units employ two-stage rotary compressors to operate efficiently in temperatures up to and beyond 43°C (109.4°F).
Bente Tranholm-Schwartz, Deputy Head of Unit at DG Climate Action at the European Commission (EC), pointed to natural refrigerants as the way forward in Europe in view of the likely stricter EU F-gas Regulation and upcoming REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulation of PFAS chemicals that is targeting f-gases. She made those…
The four-pipe transcritical CO2 system can operate in cooling and heating modes simultaneously or independently of each other.
An integrated R290 unit improved the R744 system’s COP by nearly 18%.
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