World News

Industry news and insights from Europe and around the World

UK News

Latest news and developments in the United Kingdom

Products

Keep up-to-date with the latest new products and technology

Features

General articles, applications and industry analysis

Lower GWP blends in Bitzer compressors

New Ecoline PicGERMANY: Bitzer has produced an information sheet for those considering using some of the new lower GWP refrigerants and blends with its compressors.

Many of the new lower GWP refrigerants are mostly mixtures of common HFCs, HFOs and hydrocarbons. Bitzer lists blends with the components R32, R125, R134a, R143a, R152a, R1234yf, R1234ze(E),R290, R600 and R600a as being tested for compatibility. For several refrigerants Bitzer can deliver predicted performance data upon request.

Provided the blends use only the components listed in table 1 and the vapour pressure curves are not below those of R134a and not above those of R404A or R407F the following Bitzer compressors are said to be suitable for use in field test installations:

Ecoline semi-hermetic reciprocating compressors/ POE oil
HS semi-hermetic screw compressors/ POE oil
CSH semi-hermetic compact screw compressors/ POE oil
CSW semi-hermetic compact screw compressors /POE oil

Table 1: Common refrigerant mixture components
Table 1: Common refrigerant mixture components

The paper warns that as many of the new R404A or R22 replacement refrigerant blends have a significant temperature glide of 4 to 7K, this can, depending on the system and heat exchanger design, lead to different evaporating and condensation temperatures compared to the refrigerants they are designed to replace. As a result, the operating conditions of the compressor can move, resulting in need for additional cooling

The full document is available for download here.

Latest News

29th March 2024

BUS applications up 75% in February

UK: Applications for grants under the UK government’s Boiler Upgrade Scheme (BUS) in February were 75% higher than during the same month last year, new statistics reveal.
29th March 2024

EBM-Papst opens new Chinese HQ

CHINA: German fans and motors manufacturer EBM-Papst has established a new 33,000m² local headquarters in China, bringing together the company’s previous four locations in Shanghai.
28th March 2024

Hudson warns of unsafe US recovery cylinders

USA: The US refrigerant supplier and reclaimer Hudson Technologies has warned of illegal and unsafe recovery cylinders entering the US market.
28th March 2024

Topical talks at Bath breakfast meeting

UK: The next South West South Wales Refrigeration Society breakfast briefing will feature talks from three experienced and knowledgable speakers on varied refrigeration and air conditioning topics.
28th March 2024

CO2 compressor for multiple applications

ITALY: Frascold’s new TK HD series transcritical CO2 compressors are designed for a wide range of refrigeration and air conditioning applications, as well as high-temperature heat pumps up to 100°C.
28th March 2024

Copeland releases 50hp scroll in Asia

CHINA: US compressor manufacturer Copeland is to launch a 50hp scroll for heat pump OEMs in Asia.