Sponsored by COILS
Huayi talks green cooling
Continued from page 18.
to global warming, the trend towards the use of environmentally friendly refrigerants will continue to grow in the coming years. The case is to fi nd compounds with zero ODP (Ozone Depletion Potential, or potential destruction of the ozone layer) and low GWP (Global Warming Potential or GWP). The fi rst factor
20
indicates on a scale of 0 to 1 the damage it can cause to the ozone layer.
The second factor measures the heat which a gas can
trap – generally in comparison to CO2 , or carbon dioxide,
a period usually calculated over 100 years. Thus, the 100-year GWP for methane is 25, which means that the issuance of one million tons of methane is equivalent to emitting 25m tons of CO2
-eq. Other gases
currently used in refrigeration have signifi cantly GWP higher rates: R134a (1,300 GWP), R404A (3260 GWP) and R507 (3,300 GWP). The best choices among natural refrigerants, which are already on the market, include CO2
itself (R744), ammonia (R717), air (R729) and
hydrocarbons such as propane (R290) or isobutane (R600a). From a strictly technical point of view, the use of these hydrocarbon refrigerants is a great solution because of their physical and chemical properties. In fact, their use can be considered fairly consolidated in large parts of the world, especially in developed countries. In addition, both R600a and R290 have a 3GWP and zero ODP indices, which make them even more attractive. The fi rst is recommended for home appliances and small business applications, and is already being used to replace R134a. For its part, R290, or propane, is a good alternative for light commercial applications, successfully replacing R134a, R404A and even R22 in certain cases.
Some media organizations have expressed reservations regarding the use of these hydrocarbons in domestic and commercial applications where there is no professional oversight over possible leaks or environmental accidents. However, the limitation to less than 150 grams of refrigerant gas per machine should remove any doubt, given that for decade’s butane and propane canisters of more than twelve kilograms have been stored in homes without signifi cant issues. In addition, the isolation of electrical circuits in these devices to prevent sparks is can be done in adequate manner. Huayi Compressor Barcelona, in line with the rest of the industrial refrigeration industry, is aware of the need to adapt its technology regarding refrigerant gases. The goal is to not only to comply with legislative requirements, but go a step further and also be exquisitely environmentally friendly.
for Working for you
Advances like these are inspired by customers like you – and the challenges you face every day. That’s why we go the extra mile to ensure you’re involved every step of the way when we’re developing new products. During initial market research, we conduct site visits and interviews
with our customers to find out more about the solutions they need… as well as the products they really want.
Sometimes, customers approach us with problems that need solving. RTU Sucro, for example, was developed when a customer asked for assistance in breaking down hardened, thick sugar coating the coils of air- handling units at a chocolate factory.
The company had tried several coil cleaning products, but none were chemically persuasive enough to deal with the deposits. So we set to find a solution. RTU Sucro was formulated to break down the sugar chunks into smaller, easier-to-manage chunks (monosaccharides) which are then hydrated into a water-soluble group so that residue can be washed off easily. In addition, the oxidative- fermentation of caramelised sugar produces acidic by-products which can cause units to rust, so RTU Sucro has been formulated with mild organic salts to remove this corrosion. Trials at the chocolate factory found the product was highly effective: increasing unit airflow by up to 100% in some cases, as large deposits, some years old, were removed within seconds.
The breakthrough impressed the chocolatiers as it delivered exactly what was needed: an inexpensive, highly effective and easy-to-use solution.
Above all else, that’s exactly what we want to from every product as it means that those using them can do their job more efficiently, quickly and safely – where necessary creating individual solutions to seemingly intractable problems. Solutions that don’t cost the earth.
Advances for the environment and your business
Continued from page 19.
widely – in different industries and in daily life – biocidal products have demonstrated great success in inhibiting and/or killing microorganisms, including bacteria, viruses and other pathogens.
At Advanced, we work with a class of biocide called QUATS, which is blended with effective amounts of chemical stabiliser and other exclusive components, such as surfactants.
Their relatively broad range of activity, coupled with low corrosiveness, toxicity and cost makes them ideal for the HVAC industry, but, we wanted them to work even harder for our customers – and their customers too.
Working with the Knowledge Transfer Partnership at the University
of Surrey, we sought to optimise the QUATS to be particularly effective against fungal spores, which have, until now, been a big issue for our industry.
And it has paid dividends. The new formulations for CondenCide and RTU ECD achieve a kill rate of 99.999% kill rate in less than 60 seconds (EN13727), and boast EN13697 certification.
What’s more, this increased performance was achieved at a lower QUATS dosage – utilising 100% biodegradable ingredients.
Cubigel T
he design of the ‘Green Cooling’ series under the Cubigel Compressors brand is intended to
minimise operating costs for refrigeration equipment in places where energy conservation is a main requirement. Moreover, this equipment can work with R134a and R404A gases or natural refrigerants, such as propane (R290) and isobutane (R600a).
The progressive introduction of natural refrigerants in these applications is required not only by increasing legislative pressure towards replacing HFCs, but also because they are more effi cient in terms of energy consumption and performance. These high-effi ciency units can reduce energy consumption between 20% and 40% compared to the usual standards.
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