GREEN MATTERS The viscosity of the plant based HTF, such as
Greenway Neo N, is signifi cantly lower (>40% below -10°C) than traditional MPG. This lower viscosity even allows use down to very low temperatures (-55°C). Testing published by Climalife has shown that
power consumption at various conditions and fl ow rates is between 3% to 12% lower for the plant based HTF compared to equivalent traditional MPG solutions. As well as seeing energy savings from pumps, the lower pressure drops can also lead to lower costs due to smaller pump and pipe diameter requirements and can even lead to a reduction in the operating noise level of the pumps.
Often the phrase ‘food safe’ is used when choosing a HTF in applications where there is the risk of accidental contact with food. Traditional MPG is often referred to as ‘food safe, but strictly speaking ‘food safe’ does not exist as any item which is not included on the intended ingredients list, even water if not listed, would be considered a contaminant, and not be allowed to enter the food chain. However, there is a certifi cation issued by NSF (National Sanitation Foundation) that recognises
The main purpose of any carbon mitigating technology should be to reduce the impact on the environment largely by off setting non-renewable carbon with
renewable carbon.
products that are food grade and safe for incidental contact with food. Greenway Neo N has met the requirements to be registered NSF (National Sanitation Foundation) HT1 across a wide temperature range and is fully NSF and FDA compliant for use in a food processing/ handling environment. Most MPG and MEG based HTF products have an upper limit of around 150°C for the recommended operating range.
Products based on the plant based
1,3-propanediol have an improved thermal stability and can have a recommended upper limit of up to 200°C, making it ideal for high temperature heat pump applications and solar thermal applications where very high temperatures are often encountered. The longevity of bio-sourced HTFs was demonstrated in a case study published by Climalife which featured an air source heat pump application installed in 2017. The HTF had never been changed, and samples taken from the system were analysed after 6 years of operation. The results showed that no signifi cant degradation of the fl uid had occurred and there were no signs of any system corrosion within the sample.
The humble heat transfer fl uid has often been
overlooked when it comes to off ering a fully sustainable and low carbon solution. Maybe because of habit, maybe because it’s not seen as the most critical component, but surely, if there is a renewable and sustainable option that potentially off ers performance benefi ts as well. At least worth considering, isn’t it?
We are at the Installer Show 2024
Testo is back and better than ever for InstallerSHOW 2024. We have some very exciting new products featuring the NEW testo 565i Vacuum Pump and NEW testo 770-3 Clamp meter. Our summer promotion boasts some exciting offers across our range of manifolds too! There will be amazing giveaway opportunities to be involved with too!
Testo strip ACR
Jun24.indd 1
30/5/24 10:40
Blended Fluids offers a comprehensive range of high-performance heat transfer fluids and lubricants suitable for diverse applications requiring glycol-blended heating and cooling liquids, as well as lubrication applications. Our specially formulated heat transfer fluids are available in a neat form or pre-blended (IND or MPG,) to meet specific requirements, providing an efficient solution for applications with lower energy costs. Thermal Xcellence, a non-hazardous glycol-blend heat transfer fluid by Blended, contains top-tier multi-metal corrosion and scale inhibitors to prevent internal corrosion and scaling, minimising downtime. Find us on stand 5H54 at Installer Show to find out more! Contact us on: (+44)1652 680555
SHOWCASING SOLUTIONS FOR DECARBONISATION IN NEW AND RETROFIT BUILDINGS
Panasonic strip ACR
Jun24.indd 1 Installer Show hp ACR
Jun24.indd 1 Download the ACR News app today STAND 5C44
30/5/24 11:45
www.acr-news.com • June 2024 25 30/5/24 11:52
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