📋 Tender Overview
Danfoss has expanded its popular range of microchannel heat exchangers with a new version optimized for use with low-density low-GWP refrigerants like R1234ze and R515B.The new world-first technology solves a key design challenge for OEMs transitioning to ultra-low GWP refrigerants such as R1234ze and R515Bespecially in large air-cooled chillers using screw and centrifugal compression.Typically the low density of these refrigerants makes system performance highly sensitive to pressure drops.But thanks to optimized micro-channel tube geometry the new optimized microchannel heat exchangers MCHEs provide the ideal balance between maximum heat rejection and internal refrigerant pressure drop.As a result OEMs can realize a 20 reduction in refrigerant pressure drop at the component level and transition more easily to low-GWP low-density refrigerants.This change marks over a decade of innovation in MCHE as the key technology for high-efficiency systems that require a lower refrigerant charge. It enables OEMs to realize CO2 reduction goals while reaping all the benefits of customized MCHEsHigh energy performanceLower refrigerant chargeSustainable buildThese new MCHEs also mark a step forward for Danfoss in its broader roadmap for tackling energy efficiency and refrigerant change.The ultra-low GWP refrigerant R1234ze is an increasingly popular choice for HVACR applications as its widely available with a GWP below 5 and has the lowest flammability of all A2L-rated refrigerants. R515B is also growing in popularity as it has an AR5 GWP of 299 and an ASHRAE A1 safety classification.Jeff Tucker Head of Micro Channel at Danfoss explains The climate crisis is the biggest challenge we face and the innovations were seeing today will play a crucial role in our global future. So were really excited to be creating new opportunities for our customers to transition to low-GWP low-density refrigerantsand see the impact that has on CO2 emissions and energy efficiency.While the new MCHE technologies mark a big step towards this goal it is not new to Danfoss adds Luigi Zamana Danfoss global senior director of Marketing AC and Heat pumps. We were pioneering with Danfoss Turbocor back in 2014 then we have developed and qualified a wide portfolio of expansion valves sensors and line components. With the potential of these medium-density refrigerants were not stopping there. We will be introducing a range of large scroll compressors. So expect more exciting new developments soon.
