CHILLVENTA
The road ahead The path forward will involve many small steps, balancing the diff erent properties of refrigerants with the timeline of the phase- down scheme.
R32 (GWP 675 – A2L) remains the balanced
refrigerant for many applications in the years to come, allowing for continued heat pump adoption in a cost-eff ective way. R290 propane (GWP 0.02 – A3) provides an
energy-effi cient, ultra-low GWP solution for specifi c applications where safety requirements and installation space allow. It comes at a higher cost compared to R32, due to increased safety requirements and refrigerant properties that result in larger units.
R454C (GWP 145.5 – A2L) is a strong alternative with a lower GWP than R32, suitable for applications where propane is not an option. This refrigerant can bring aff ordable, effi cient and safe heat pumps to a broader market. Finally, R744 CO2
(GWP 1 – A1), an ultra-
low GWP refrigerant already used in many refrigeration systems, off ers a promising long- term option for medium and large commercial systems. It is a solution that deserves the full attention of all stakeholders in the HVAC market: component and HVAC manufacturers, as well as their engineering and installer partners, with the aim of launching the next generation of direct expansion systems. “Daikin is continuing its research and
development into alternative refrigerants to accelerate the adoption of heat pumps across all systems and applications. We encourage the entire industry to follow this path. In the future, there may even be solutions that are not yet in the public eye,” said Dehertogh. “As a manufacturer, we will take responsibility and provide the education and training needed to adopt these new technologies.” “At the same time, we should not forget that today’s heat pump solutions, such as those based on R32, have already signifi cantly reduced CO2
emissions compared to fossil
fuel heating. Therefore, we should continue to use these solutions to transition to clean heating based on renewable energy in the short term,” added Dehertogh.
Schott glass door system improves energy performance of supermarket chillers
T
he new Schott Termofrost Inmotion door system reduces the energy consumption of chiller cabinets, is easy to install,
and improves the presentation of goods in retail stores. Developed by Schott, a patent- pending hinge makes a new generation of glass door systems possible. Schott Termofrost Inmotion has signifi cantly smaller gaps than previous solutions, resulting in wider doors and a larger insulation area. It also off ers an improved gasket design. Together, these features provide up to 35 percent better energy effi ciency compared to conventional chiller door solutions. But that’s not all: With three-axis adjustability, the hinge simplifi es installation and customization while also providing greater safety preventing collisions. As the name suggests, the new hinge for the Schott Termofrost Inmotion door solution brings movement and performance to glass door systems for chiller cabinets. The ingenious mechanism developed by Schott ensures that the doors close gently and automatically, with self-regulating closing force and door stops – and that the gaps between the doors on both the hinge and handle sides are signifi cantly reduced. The technology allows the use of better sealing solutions and wider glass doors,
resulting in a clearer view of the stored goods. The main benefi t of the Schott hinge and door system is a signifi cantly improved energy performance. Chiller cabinets equipped with Schott Termofrost®
Inmotion consume 10
percent less electricity than conventional solutions with sealing lips and around 35 percent less than doors without sealing lips. In a comparative test with a four-door refrigerator, the innovation from Schott consumed 10.26 kilowatt hours per day, compared to the 11.3 kWh of a typical door system with conventional sealing lips.
Additional features show that the desired that the improvements are not limited to energy effi ciency. For example, the glass door can be adjusted along three axes to ensure it is always perfectly aligned with the cabinet, and to compensate for unfavorable geometric conditions. Termofrost Inmotion will be available in various designs and for heavy duty or high humidity environments. “The complete door system has passed demanding tests at all levels of application. With Termofrost Inmotion, we want to go beyond the standard and create a new generation of glass door systems at a higher level,” said Filip Rusar, project manager at Schott Termofrost.
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www.acr-news.com • November 2024 33
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