ATMOsphere Europe selects technology case studies

By Eda Isaksson, Jul 03, 2018, 12:23 2 minute reading

The ATMOsphere Review Panel has selected the first and the second round of case studies to be presented at ATMO Europe 2018, taking place in Lago di Garda, Italy (19-21 November 2018).

The ATMOsphere Review Panel has selected the first and the second round of case studies to be presented at ATMO Europe 2018, taking place in Lago di Garda, Italy (19-21 November 2018).

More case studies will be selected and announced in the coming weeks.

Click here to see the conference programme.

The selected case studies with hydrocabons–based technologies are:

Euroklimat, R290 chiller for low temperature application in Sicily, Italy

This case study presents the installation of a Euroklimat propane chiller installed at the production facility of Simone Gatto, an Italian specialist in the production of essential oils and juices made from the well-known Sicilian citrus fruits, located in San Pier Niceto (Sicily, Italy),

The supply of low temperature water/glycol performs two distinct functions in the extraction process and storage of essential oils. First of all, it supplies chilled water at extremely low temperatures (up to - 30 °C) for the cooling of essential oils. At such low temperatures the heavy fraction solidifies allowing the separation and its removal.

This phase of the process is not continuous, so the second function of chiller supplies chilled water at 5°C for the storage of the final products at a controlled temperature. The installation demonstrates how propane-based refrigeration equipment is versatile and represents another step forward in the deployment of sustainable hydrocarbon refrigerants across Southern European countries. 

Yoram Shabtay, Heat Transfer Technologies, Sub-Zero and MTL Cool optimise MicroGroove copper-tube coils for use with natural refrigerants in refrigeration equipment

Hydrocarbons are highly attractive for use in refrigerators and freezers but their flammability necessitates strict “safety conditions” with respect to the refrigerant charge. Sub-Zero, Inc., who makes high-end, built-in residential refrigerators, freezers and wine coolers, uses a proprietary heat exchanger design and simulation software tool from Optimized Thermal Systems to identify feasible 5-mm inner-grooved copper tube coil designs. The baseline design used is 6.35-mm copper tubes. For an R600a residential application, simulations identified 5-mm tube coil designs with significantly less internal tube volume than the baseline coil. One 5-mm design reduced the internal tube volume by as much as 41% compared to the baseline, along with a potential 57%reduction in coil footprint, while maintaining a near equal airside pressure drop. Sub-Zero is reinventing its residential appliances to allow for a more efficient use of natural refrigerants using MicroGroove’s smaller diameter copper tubes.   

By Eda Isaksson

Jul 03, 2018, 12:23




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