PRODUCT NEWS
Fujitsu
Bitzer
With Bitzer software, customers can calculate the performance data for most Bitzer products with the most diverse refrigerants and access technical information. The refrigeration and air conditioning specialist is continuously expanding its Bitzer software – and has made it possible to use it with the new refrigerant R515B for its screw compressors. R515B is a non-toxic, non-fl ammable A1 alternative to R134a and R1234ze(E) with a low GWP factor. R515B was designed as a replacement for R134a for use in medium
Fujitsu General Air Conditioning UK have introduced the new Airstage Generation IV VRF that covers a capacity range of 12 to 135kW. Certifi ed by Eurovent independent testing, the heat pump and heat recovery models off er an improved specifi cation potential with new innovative technologies and design.
From the compact, lightweight, single fan J-IVS to the powerful, unique 50kW J-IVL, the demands for mini VRF in today’s market is considered throughout the J-series range. Redesigned heat exchangers and refrigerant control techniques provide to up 8% improvements in operating effi ciencies over previous models and results in achievable longest pipe lengths of up to 120 meters. The Airstage VR-IV, a heat recovery system of 22 to 135kW, off ers
simultaneous cooling and heating operation from one refrigerant circuit. Energy effi ciency ratios of up to 9.0 are achievable, transferring energy that would normally be rejected from the system and using it to heat or cool alternative rooms. Intelligent refrigerant control optimises capacity and effi ciency by directly adjusting the system evaporating pressure in relation to load; improving comfort levels by reducing the eff ects of overheating or over cooling.
The application of a Blue Fin heat exchanger, to resist against corrosion and the automatic operation protection modes of the DC inverter compressor, allows specifi cation to projects in the most extreme environments with the utmost confi dence. Phil Deverick, commercial manager, Fujitsu General Air Conditioning UK said: “We are constantly striving to improve our applied ranges. The introduction of our fourth generation VRF highlights our capabilities for innovation and the constant drive to improve on our award-winning products. Whilst effi ciency and functionality are always at the forefront of our design, we have also made sure that we can target a multitude of applications with such a varied range.”
www.fujitsu-general.com/uk/
temperature applications, comfort air conditioning, heat pumps, process air conditioning and process heating. Bitzer has now implemented the refrigerant in its Bitzer software: screw compressors from the CSH series can be used with R515B from software version 6.15.2. R515B is also already included in the Refrigerant Ruler app from Bitzer. Made of 91.1% R1234ze(E) and 8.9% R227ea, R515B as a A1 safety refrigerant is classifi ed according to DIN EN378-1 and has been graded as being neither toxic nor fl ammable. In terms of thermodynamics, R515B reacts similarly to pure R1234ze(E). The R227ea it contains suppresses the fl ammability. The refrigerating capacity and performance statistics are, however, almost the same as pure R1234ze(E).
With a GWP of 299, R515B has a global warming potential that is 80% less than that of R134a. R515B is therefore particularly interesting for screw compressor applications for which R134a was being used until now and which can not be changed to use fl ammable, low-GWP refrigerants such as R1234ze(E) or R1234yf.
www.bitzer.de/gb/en/
NevadaNano
NevadaNano’s Molecular Property Spectrometer (MPS) is said to be the only technology available that measures and classifi es a wide range of combustible gases and reports the potential to cause harm virtually instantaneously.
According to the company it is the fi rst new gas sensing technology to emerge in more than three decades and helps businesses create safer work, home and industrial environments.
NevadaNano focuses on commercial applications, specifi cally, monitoring for fl ammable gas, new refrigerant leaks, methane leaks and indoor air quality.
All of these applications are often tied together as part of IoT- enabled distributed gas sensing systems. The company technology is used in a diverse array of commercial and government applications by its system integrator partners and manufacturers.
NevadaNano.com
40 November 2020
www.acr-news.com
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