Business Development Manager - AACS Limited
A key cog in the machine of the global cool chain is refrigeration, it is essential in our modern world. Since 2007 with the introduction of F-Gas regulations, the industry has continued to evolve to ensure compliance with legislation and a shift towards increased environmental awareness for the consumer.
The industry is always looking for new ways to combat climate change, with a move towards lower GWP (Global Warming Potential) alternative refrigerants , such as low GWP A2L refrigerants. It is an important move and it is vital to ensure the sustainability of the industry itself. To help us better understand the environmental impact of F-Gas, we need to consider the key factors and look at each element before we can start to build a sustainable, eco friendly industry for future generations.
Ensuring we think green when choosing new equipment will of course be an influential factor when looking at the future of the industry. Ensuring we consider the overall sustainability and efficiency of running a system over its life. We must look at the overall lifetime cost of the equipment, to do this we need to consider the initial financial cost, as well as ongoing costs whilst also ensuring the environmental impacts are at the forefront of our decision as well. Obviously low GWP refrigerants have less of an impact on the environment, but the energy consumption of that system over its lifetime has a significantly larger impact upon carbon emissions. We must ensure that any new systems not only operate with a low GWP refrigerant but that it is also highly energy efficient too to ensure we achieve a reduction in the lifetime environmental impact of the equipment too.
Obviously low GWP refrigerants have less of an impact on the environment, but the energy consumption of that system over its lifetime has a significantly larger impact on the environment
Low GWP alternatives
Nowadays there are a wide range of low GWP refrigerants and refrigerant blends that serve as potential alternatives to high GWP refrigerants that were so widely used in the past. Consider that fact that high GWP refrigerants are now banned if they fall into the category of greater than 2500 GWP. There is such a large requirement for various alternative options to be available in the market for both retrofit and new equipment.
Currently there are a wide range of new refrigerants and blends with low GWP available on the market. As an industry we must act now to take advantage of these solutions sooner rather than later, with a view to future proofing the industry and working towards a more promising future for our world. We must be forward thinking and ensure the uptake of lower GWP refrigerants continues, as we move toward 2030, a year that will hopefully see a 29% reduction of CO2 tonnes from the base set in 2015. Refrigerant choice will play a massive part in the sustainability of our industry and is one part of the wider goal of reducing CO2 emissions for our planet.
high GWP refrigerants are now banned if they fall into the category of greater than 2500 GWP
Cleaning, maintenance, leaks and lifetime costs
Once you have chosen your new equipment, you are confident it is energy efficient, you may want to consider other ways in which you can actively keep the system working efficiently such as regular cleaning, maintenance and installing leak monitoring technology. AACS Ltd offer maintenance for a wide range of refrigeration systems, from one-off call outs to a full planned preventative maintenance package, we can be on hand to help you when you need it and ensure that your system runs efficiently and effectively throughout its lifetime.
It is important to consider not just the initial financial costs of a system but also how much it will cost during its lifetime, this is important as we move forward with F-Gas. New low GWP refrigerants that have better energy efficiency than traditional HFC refrigerants, this grouped with a lower environment impact if they leak, can in turn help reduce overall CO2 emissions for that business.
Another potential consideration are hidden future costs of purchasing a system that runs on older technology. As refrigerants are phased out, the price tends to rise and as new refrigerants are adopted, they tend to reduce in price. Any investment should be planned in detail to ensure total costs are reviewed, refrigeration systems are no exception to this, but they do have an added requirement of needing to consider the environmental impact too.
It is vital to be able to detect leaks in thermodynamic systems as quickly as possible, for the following reasons:
Recently there have been significant developments in refrigerant leak detection technology, with a good part of this down to the increased emphasis on considering the full lifecycle performance and overall cost of a system. More and more we see new technologies developing which are making it easier than ever to form better choices on system types and their overall lifetime cost.
Maintenance, done properly
Maintenance is key to ensuring a system runs effectively and efficiently over its lifetime, we know this already, however effective maintenance is another thing altogether. Effective maintenance programmes ensure that a system continues to operate at its optimum level throughout its lifespan.
For the end user, there is a definite value in having routine maintenance carried out on a system, rather than opting for a reactive approach that may incur more damage to a system over time, nipping it in the bud before it is a problem is always easier than cleaning up an ever increasing mess.
Not regularly monitoring a system can prove much more costly in the long run as equipment downtime and inefficiencies can prove expensive from both a maintenance and productivity point of view.
Oil changes, regular ones, should form part of an effective maintenance regime as it will ensure the compressor and all of its moving parts are lubricated to their ideal level, avoiding unnecessary wear. Regular cleaning also plays a massive part in practicing overall good system maintenance, regular cleaning supports the efficient operation of systems.
a well maintained and cleaned system can help prevent contamination, remove build up and odours whilst increasing the longevity by continuous optimum performance and energy efficiency as well as ensuring breakdowns and potential leaks are kept to a minimum.
With over 30 years experience, AACS Limited are well rehearsed in maintenance, this includes full PPM schedules for HVAC/R systems critical to business needs for some of the North Easts biggest players. From industries including Manufacturing, Petrochemical, Pharmaceutical, Commercial and Offices, there is no job too big or small and our experienced engineers can cover sites from Central Scotland down to Yorkshire including the North West and of course, the North East of England. Refrigeration, Air Conditioning, Ventilation and Heating covered, we are here to help.
The world around us is changing and evolving every day. As individuals, businesses and an industry as a whole, it is vital we continue to advance our ways of working.
The Refrigeration and Air Conditioning industry will always be an essential part of our modern world, but it is our role to make sure we contribute to the ongoing climate emergency our world is currently experiencing. This coupled with the experience and background knowledge will help us future proof our industry for generations to come.
30/9/2020 0 Comments
Business Development Manager @ AACS Limited
Whichever way you look at it, 2020 didn't really go to plan for anyone did it! Unless you manufacture PPE or Hand Sanitiser, it probably wasn't the best year. Onwards and upwards I always say... 2021 is shaping up to be the year of rebuilding, the year of promise, the year we get back on track!
This applies to the HVAC Industry too, today we will be identifying the upcoming trends that are set to shape the next 12 months of our industry in 2021, providing we don't get another global lockdown that is.
As an industry, HVAC has always been about heating and cooling, I know that sounds obvious, a simple change that people can feel almost immediately. However, with Coronavirus and the rise of COVID-19, the focus has shifted so that we aren't just focusing on people's comfort, we are also looking at their health and wellbeing, with air quality coming to the forefront and being an interesting talking point for manufacturers around the globe.
Whether it be an app that allows you to connect your phone to your indoor unit and measure the quality of the air or an independent consultant that comes to measure your 'Air Health' it is an important area that will be highlighted going forward and could be one of the main reasons you invest in a system for your company or even your home, it could even be the reason you finally get that service.
The technology available today allows for a smarter and move innovative way to exist with your HVAC system.
Green Technology and Smart Homes
The environment stood centre stage when the world shut down, however in recent months with COVID-19 reportedly coming back for a second wave, political campaigns raging and basic human rights being debated every day. It is easy to forget we are still responsible for our little rock floating in space, in 2021 it will be no different, it won't go away.
New, green, environmentally conscious technology is sure to grow yet faster in 2020. This could mean heating being fuelled by electricity or hydrogen, or myriad smart inventions to provide cleaner solutions. Innovation in the HVAC sector has the chance to be at the vanguard of change. With growth in the green sector, the market for HVAC will have a big part to play in the rise of sustainable energy.
Smarter ways of thinking are complimented by the Smart Homes we live in. From an app on your phone allowing you to turn the lights on, cook a chicken and set the temperature in your home at the click of a button, smart homes are paving the way to a more intelligent and environmentally friendly society. Nest & Hive Thermostats bring another level of usability to the market that is likely to increase the appeal to make your home smart in 2021, if even just for the novelty factor at first, people will start to realise that these things we thought were pipe dreams 20 years ago will become a necessity we cannot be without.
Daikin Control Systems allow you to be in control of your HVAC at all times, with App access to up to 50 units at any one time, home owners and Facility Managers alike will rejoice in the holy grail of HVAC technology. The ability to change the temperature and settings room by room, time scheduling to make the systems work around you , energy usage to monitor consumption and see where you can save and the ability for the system to learn how you live and work.
The future is now, long gone of the days where an air conditioning unit would be the talking point of the office, mostly for the wrong reasons, the technology available today allows for a smarter and move innovative way to exist with your HVAC system.
A New Breed
With new technology, comes new training. Global demands for HVAC equipment are expected to increase by 6% annually through 2021. The growth of the HVAC market brings with it extra demand for skills across a company.
The baby boom generation are entering retirement and the millennial generation may be much less likely to enter a skilled trade. Companies are therefore looking at the way they recruit and train staff, investing more in employee training and skills programs as they adapt to change.
AACS Limited work with a local North East education provider, Northumberland College, to find the best local talent through a vocational way of learning, we have to adapt and bring the next generation of Air Conditioning and Refrigeration Engineers into the game.
VR and AR Technologies
Designing a new system can often be a complex job, with everything only ever existing in a 2D world until you get to site, however AR (Augmented Reality) and VR (Virtual Reality) is changing the way design engineers plan and demo the latest systems in different spaces.
VR is often described as Immersive Technology, once you don your goggles you are sucked into a virtual world and can move around within that world. AR works slightly different, adding digital elements into a live view, usually incorporating the camera functionality in a smart phone or tablet.
Instead of a design purely being 2D, HVAC Design Engineers can visualise anything from the smallest component to a full system with the help of rendering technology in a simulated space using the latest CAD software.
This brave new world for HVAC can also help with training and maintenance, allowing Service Engineers to fix a problem in the safety of a workshop before they get to site, many of the AR apps allow for a built in manual which will in turn help the Engineer learn as they go.
Immersive technology is changing the way the industry designs, sells and services the products by adding an exciting new tool for those working in this fast-moving and dynamic industry,
An Exciting Time
Nothing is certain in this day and age, with trends changing faster than the temperature in an office, however the HVAC industry continues to strive and change for the better. With new technology and a consumer market with changing priorities, we are in a great place to see out the next 30 years as we have done since 1990.
Director at AACS Limited
The work of building services specialists was acknowledged by various government departments and building clients as providing vital support for critical operations like the NHS and food suppliers during the Covid-19 crisis.
The Department for Business, Energy and Industrial Strategy (BEIS) said building maintenance should continue as normal during the period when the country was in lockdown and was “helping to save lives” by keeping hospitals, care facilities, schools and supermarkets operating.
There were some early rumours that air conditioning and ventilation could help to spread the virus, but it was quickly established that this was not the case. On the contrary, it became clear that these systems could play an important role in helping to deal with the problem.
REHVA, the European Federation of HVAC associations, explained that Covid-19, unlike some other viruses, is largely resistant to environmental changes and susceptible only to high relative humidity above 80% and temperatures above 30°C. Therefore, humidification, air conditioning and duct cleaning had no practical effect on its transmission.
However, there were certain adjustments facilities managers could make that would further reduce the risk of transmission. For example, by switching air handling units (AHUs) to full fresh air mode and temporarily disabling recirculation with heat recovery, facilities managers could ensure potentially contaminated air was not recirculated in occupied spaces.
Building users were urged to keep up air change rates – even in partially occupied buildings – as this would minimise the risk of moisture, which could contain the virus, settling on internal surfaces.
indoor air can often be between 5 and 13 times more polluted than outdoor air due to a cocktail of contaminants
Monitoring and maintaining for health
However, good maintenance strategies should not just be deployed in response to a pandemic. There is a wider lesson to be learned about how building services maintenance can safeguard the health and wellbeing of building occupants at any time.
According to the Royal College of Paediatrics and Child Health (RCPCH) and the Royal College of Physicians (RCP) indoor air can often be between 5 and 13 times more polluted than outdoor air due to a cocktail of contaminants including smoke, damp, traffic fumes, chemical aerosols and particulates from wood burning.
This is known to be contributing to a dramatic rise in the number of asthma sufferers and is also linked to other allergic conditions including conjunctivitis, dermatitis and eczema. It also has a particularly unwelcome impact on the health of children.
Schools, care homes and healthcare facilities are areas of particular concern. In these buildings it is crucial that the air conditioning systems are continuously monitored to ensure they are delivering the right conditions for health and wellbeing – and that regular maintenance is carried out to keep them operating reliably and efficiently to minimise running costs.
This is also the best way to extend the operating life of these critical assets and minimise costly repairs and system downtime. It will also flag up the need for regular maintenance activities such as disinfection and chlorination to kill viruses and bacteria, preventing airborne cross contamination.
Duct cleaning also removes unwanted substances such as debris and dust from ductwork and sanitising prevents mould building up in the system. Duct and air sampling ensures good quality air is circulated through the HVAC units. Humidifiers should also be checked to maintain relative humidity levels are in line with recommendations for minimising airborne viruses.
Thanks to the availability of connected tools, continuous monitoring can be carried out remotely so potential problems are spotted before they arise.
good maintenance strategies should not just be deployed in response to a pandemic. There is a wider lesson to be learned about how building services maintenance can safeguard the health and wellbeing of building occupants at any time.
Technical innovation for long term efficiency
Our supplier Daikin continue to push the boundaries of technical innovation to improve the long-term operating efficiency of our installations. For example, they recently launched a new generation of water-cooled centrifugal compressor chillers, which provide better energy efficiency thanks to the inclusion of a new refrigerant cooled inverter drive.
Available in a wide range of cooling capacities and component combinations, Daikin's new B Vintage chillers have been designed to deliver optimal performance at both full and part-loads. They can also operate with a choice of refrigerant to help building users meet targets for reducing the global warming potential (GWP) of their installations.
Daikin AHUs also meet client requirements for air quality and energy efficiency through accurate sizing and using technical innovations like EC fans. Fan power is specifically referenced in revised ErP legislation so is another design aspect that should not be ignored by specifiers. This also calls for multiple fan systems to build in redundancy so is as much about reliability and peace of mind as improving efficiency.
The country’s problems with air pollution and the increasing publicity around the transmission of disease means this aspect of building engineering is under the microscope. Fortunately, the air conditioning and ventilation sectors have a range of solutions available to help building owners and managers maintain safer, healthier and more comfortable conditions for occupants – delivering better and more cost-effective outcomes for all.
Business Development Manager, AACS Limited
Delivering and maintaining a high level of indoor air quality has never been such a high priority. This is because long-term exposure to air pollution can cause or exacerbate chronic conditions, such as cardiovascular and respiratory diseases, as well as potentially affecting a person’s mental health and well-being. While there are numerous factors that contribute to the creation of a pleasant, clean and healthy internal environment, such as lighting, humidity, temperature and air quality, effective building ventilation is perhaps the cornerstone of good building health.
Fundamentally, ventilation aims to remove stale indoor air and replace it with ‘fresh’ outdoor air. Ventilation systems are designed to extract water vapour, airborne pollutants (from both inside and outside pollution sources) and odours, control humidity and maintain good indoor air quality.
In order for a building ventilation system to be truly effective and perform as the original design intended, it has to be commissioned correctly, and have a regular maintenance and cleaning programme in place.
Air pollution from both outdoor and indoor sources represents the single largest environmental risk to health globally” - World Health Organisation (WHO)
Installation and commissioning
It is crucial that the system is installed according to the manufacturers’ recommendations and commissioned in line with the final design specification. While last-minute changes during on-site installation, such as varying pipe lengths, for example, may seem minor, it can in fact have a significant impact on the system’s overall performance and energy efficiency. Consequently, this can also affect the building’s indoor air quality. That’s why it’s so important to use an experienced installer, who is approved to install the chosen manufacturer’s ventilation system.
Maintaining your ventilation system
Once ventilation is installed and commissioned, regular maintenance is essential in order to ensure the system continues to deliver a high level of performance, and this should form part of the building’s overall HVAC service regime. It is not a case of simply installing the system and then forgetting about it.
Given the system’s role of extracting airborne pollutants and providing a continuous supply of ‘fresh’ air, regular cleaning of a building’s ventilation is particularly important, as build-up of dust and dirt can affect the system’s ability to maintain indoor air quality. While HVAC units are fitted with filters, primarily to keep the system free of dust (as well as removing particulate matter from supply air), there is still more that can be done.
For example, regularly checking the supply intake and exhausts for signs of dirt build-up, pollution or contamination, or damage from weather or animals is good practice, as is inspecting the ductwork and indoor units. Any dust should be removed from the ductwork, with particular attention to the filters, heating and cooling coils and any change of direction in the ducting.
It is also recommended that on a regular basis filters are cleaned and replaced, indoor units are cleaned and the dust boxes of those fitted with auto-cleaning systems emptied.
AACS are a North East based Air Conditioning Contractor, specialising in Air Conditioning, Ventilation and Refrigeration.
We don't charge call out fees and we offer no obligation quotations.
For further guidance, BS EN 15780: 2011: Ventilation for Buildings. Ductwork. Cleanliness of Ventilation Systems specifies acceptable cleanliness levels for supply, recirculation and extract air, grouped into three classes – Low, Medium and High – depending on the use of the internal space.