FEATURE REPORT PRODUCT NEWS
Danfoss
Danfoss will be participating at Chillventa 2024, demonstrating how its portfolio of refrigeration and HVAC solutions can create a sustainable cold chain. Danfoss’ solutions help food and beverage manufacturers to build refrigeration systems that prioritise safety and energy effi ciency. NeoCharge is a technology that enables an ammonia direct expansion system to run without superheat and reduces the recirculation in a traditional fl ooded system to the lowest possible rate while maintaining the same performance level. Compared to traditional ammonia systems, NeoCharge can provide substantial potential energy savings. And in new-generation direct expansion systems, the energy savings can be up to 15%. The solution also enables system integrators to expand cold storage capacity up to 40% with the same charge, making it the most cost-eff ective and energy-effi cient way to expand an existing cold store or build a new one. Danfoss experts will also present the company’s full line of large components for industrial CO2
transcritical systems. As the food industry transitions to natural refrigerants, CO2 can be a sustainable,
energy-effi cient option that off ers strong benefi ts for industrial applications when used with the right solution. Danfoss has worked with CO2
industrial refrigeration solutions for over 20 years and
has an extensive product lineup that supports both subcritical and transcritical applications. Danfoss will also debut a new version of its Intelligent Purging System (IPS 8) for systems working with propane. The IPS 8 automatically adjusts pressure levels and only purges when needed. Chillventa attendees will also see how Danfoss’ range of industrial heat pumps and process chillers helps food and beverage manufacturers and retailers reuse waste heat and improve the total effi ciency ratio of their HVAC systems. The Danfoss booth will feature technologies that support high-temperature industrial heating systems, such as the six-cylinder BOCK HGX56 CO₂ T compressor, which allows for a wider spread and faster uptake of large CO₂ heat pumps and industrial refrigeration systems. Danfoss’ PSG Scroll compressor and Palladio Screw compressor, which expand the applications of high-temperature heat pump systems, will also be on display.
www.danfoss.com/en-gb/
Fujitsu
Fujitsu has launched the latest version of its award-winning J-Series heat pump mini VRF system, now operating on lower-GWP R32 refrigerant and delivering signifi cant improvements in effi ciency. Aimed at small to medium- sized commercial applications or large residential spaces, the J-VS is available in capacities from 12- 15kW. The compact, single-fan chassis has a volume of just 0.3m3 (17% less than previous model) and a weight of only 74kg, aiding installation in tight spaces. Up to 13 indoor units can be connected
from a new range including compact 4-way cassettes, low static slim ducted and high effi ciency ducted units, alongside wall-mounted options. This line-up includes additional 1.7kW models and, due to heat exchanger optimisation, a new 1.1kW slim ducted unit. Compressor innovation improves seasonal effi ciencies up to a possible 8.27 SEER (up to 36% increase from previous model) and 5.37 SCOP (up to 33% increase from previous model). The system meets environmental safety standards specifi ed in IEC 603352-40 for the use of R32 refrigerant. Newly designed components include safety shut-off valves and leak detection sensors, which aid application when the design is deemed to be above the concentration limits of R32 in the event of a refrigerant leak. In addition, the refrigerant charge of the J-VS is 32% less than the previous model. A new compressor featuring improved compact windings and a
larger displacement means that rotational speeds can be reduced without a decrease in equivalent performance. Compressor control technology has also extended the minimum operating speed of the compressor to 15rps, managing low load conditions more effi ciently and eff ectively than previous versions. Integrated refrigerant storage devices, which prevent liquid slugging to the compressor during low load conditions, allow for up to 120m of liquid refrigerant pipe, with a longest length of 50m and a 30m elevation between indoor and outdoor units. An elevation diff erence of 15m is possible between indoor units. Redesigned cooling channels and suction line inverter PCB cooling allows the unit to be placed in higher temperature locations without the risk of electrical damage caused by overheating.
www.fujitsu-general.com/uk/
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www.acr-news.com • October 2024 39
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