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The Condair ME evaporative humidifier is helping Weatherite reduce cooling system energy consumption for its data centre and telecoms clients by up to 80%. Condair’s evaporative humidifier is providing adiabatic cooling in Weatherite’s innovative Adtec-D free air cooling unit. The Condair ME boosts the cooling capacity of the system, allowing the Adtec-D to fully replace the need for mechanical cooling in some applications.

 

The Adtec-D is a self-contained, modular cooling system that can be located either inside or outside of a building. In data hall or telecom environments, for most of the year it operates in free air cooling mode and uses the outside air alone to cool the internal environment. However, when the outside temperature rises to around 20°C, the Adtec-D switches to adiabatic cooling mode. The incoming air is then passed through the Condair ME, which evaporates water into the fresh air stream, cooling it by up to a further 12°C.

By combining free air and evaporative cooling, Weatherite’s Adtec-D has recently been able to fully replace DX mechanical cooling across more than 800 switchgear rooms for a leading UK telecoms provider. A total of around 1,500 Adtec-D units have been deployed in the project to date. A single legacy 30kW DX and free air cooling unit was consuming around 71,000kWh annually to maintain the required internal temperature, operating 24/7. The replacement 30kW Adtec-D cooling unit consumes just 14,000kWh to meet the same annual cooling load. This resulted in an 80% energy saving for the client, which is a significant 83.3MWh annual saving in electricity across the UK-wide retrofit project.

 

Andy Lewis, Technical Manager at Weatherite commented, “The Adtec-D is an ideal retrofit solution for telco or DC clients who wish to take advantage of free air cooling rather than continuing to operate DX chillers. Available in modules that can provide from 15 to 80kW of sensible cooling, the Adtec-D will typically operate with an energy efficiency ratio greater than 15, even at peak outputs. The evaporative cooling technology, supplied by Condair, ensures the Adtec-D can maintain the allowable ASHRAE conditions, even during the warmer months in a European climate without the reliance on F-gas refrigerants.”

 

“Weatherite only uses the highest quality components in its HVAC solutions, and this includes Condair’s evaporative humidifier. It certainly delivered on our specific requirements for operation, control and hygiene management, and we’ve been very pleased with the support offered by Condair in connection with this successful project.” Andy concludes.

 

Dave Marshall-George, UK Sales Director at Condair, commented, “It’s a privilege to partner with Weatherite on such an innovative product that is helping the UK’s telecommunications sector meet its energy and sustainability objectives. As well as offering the most comprehensive range of humidifiers on the market, Condair has the ability to work with OEMs to create customised solutions. The evaporative humidifier incorporated into Weatherite’s Adtec-D is based on our standard Condair ME, but with some modifications to meet the project requirements. This project is an example of how Condair can develop innovative and flexible solutions for its customers.”

 

Weatherite is a leading UK manufacturer of made-to-measure HVAC equipment, based out of the West Midlands. Operating for over 50 years, the company provides a range of AHUs, heat recovery systems, packaged rooftop equipment and air cooled chillers.

 

The Condair Group is the world’s leading specialist in humidity control and evaporative cooling, with energy efficient, hygienic and innovative technologies for commercial, industrial and heritage applications. Condair is represented in the UK by Condair Ltd, which offers system design, manufacture, supply, installation, commissioning, maintenance and spares. You can find out more by visiting the company’s website at www.condair.co.uk.

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‘Understanding The Relationship Between Health And Humidity Is Key To Optimising Indoor Air Quality’

Condair ‘Brand Leader’ Interview Podcast – Transcript to support learning

Every effort has been made to flawlessly transcribe the interview to support learning but please consider the recorded audio of the interview as the actual source of information for learning purposes. 

Hi this is Mick de Leiburne for BusinessNet Explorer – and welcome to a special edition of our ‘Brand Leader’ interview series.

Well, due to the COVID pandemic, management of ‘indoor air quality’ – has never been a hotter topic – and there has been – much talk about the need – for ‘increased ventilation’ in buildings – to help combat the spread of viruses. With me today is Dave Marshall-George, UK Sales Director at Condair, who is here to discuss – another important, but less understood aspect of air quality management – that of ‘low indoor humidity’.

Dave joins us on the phone…

So, Dave, what impact does ‘low humidity’ have – with regards to maintaining a ‘safe indoor environment’?

Hi Mick, thanks for inviting me in to discuss this today.

Well, the humidity level of the air inside our buildings has a great deal of influence over how airborne viruses behave and how our bodies deal with them.

I think most of us are now familiar with the fact that people release viruses in droplets when we talk, breathe or cough. And also the fact that the smaller these droplets are, the longer they float in the air and the further they can travel.

How does the indoor humidity level affect the droplets?  

Well, if a room has a low air humidity, below 40%RH, these floating droplets will shrink through increased evaporation. So low indoor humidity results in more droplets small enough to float around in the air, which subsequently increases the risk of infection to anyone in the room.

The second effect humidity has on airborne viruses is connected to their survival time. Airborne viruses, such as the flu, have a limited duration when they remain infectious. Many studies have shown that humidity is a major factor in this survival time and that when the humidity is lower than 40%RH, this infectious lifetime is much longer than when humidity isabove 40%.

And lastly, and I think most importantly, is the effect dry air has on us and our bodies. Our first line of defence against airborne pollutants is a process called mucociliary clearance. Mucous in the nose and throat capture airborne pollutants as we inhale them. It thentransports them to our digestive system, where they are destroyed. In low humidityenvironments, this natural defence mechanism is impaired, as our mucous membranes dry. This leaves us much more susceptible to airborne infections.

How would you summarise the effect that low humidity in a room has to health?  

So, in summary, dry air below 40%RH allows more viruses to float around in a room, it allows the airborne virus to survive for longer while floating, and low humidity reduces ourbody’s natural ability to fight off respiratory infections. So low humidity is a triple threat to health.

Wow, it certainly seems like humidity is important. But if it has such a dramatic impacton our health, why don’t we know about it already?

Mick I think that’s a great question and you’re right. Even though the effects of low humidity have been well researched, it is not common knowledge. I think this is due to humidity’s imperceptibility.

We cannot see it. We cannot feel it. We can walk into a room and immediately know if the airis hot or cold. But with humidity, we have no sensory organ that tells us if the air around us is too dry.

And due to this invisible nature, society is simply not well informed about the negative effects of low humidity. But as a society, we suffer the consequences of low indoor humidityevery winter.

What happens because of low humidity in the winter?  

It is widely accepted by the scientific community that low indoor humidity is a significant contributing factor to the seasonality of respiratory infections, such as flu.

The onset of the flu season in the winter closely corresponds to when our indoor humidity is dropping below 40%RH. Cold winter air contains very little moisture, so when it is heated in our buildings, its relative humidity falls. In a building heated to 21°C, the indoor humidity can drop into the unhealthy range, below 40%RH, when it’s around 10°C or less outside. And this is the case for much of our winter.

So what can we do about it?

Humidification. Using humidifiers to add moisture to the indoor air and manage humidity within the healthy range of 40-60%RH. Just as we use heating and cooling systems to manage our temperature, humidifiers are used to proactively control a building’s humiditylevel. Humidity control in the winter is a natural, effective and non-pharmaceutical method ofmitigating the spread of respiratory infections, such as the flu and COVID.

How practical is humidification of buildings – as a solution on a nationwide scale?

Very practical. As a company, Condair does this already in thousands of buildings around the world. But it tends to be for manufacturing processes that need a certain level of humidity. Sectors such as printing, pharmaceuticals, textiles, wood or anywhere that deals with materials that are affected by low humidity.

When a manufacturer is losing money because their product is drying out, there is a clearbenefit in buying a humidifier and maintaining optimal indoor humidity, and they do it.

Is it only the Manufacturing sector where you are doing this already?

We also humidify many public buildings for the health of occupants. But it tends to be where employers are very focused on reducing absenteeism. High end offices, accommodating high earning employees, present a clear return on investment in maintaining optimum air quality to minimise staff sickness.

But we really should be humidifying places like hospital wards and waiting rooms, GP surgeries and schools. These areas are the front line in the fight against seasonal illness. Maintaining 40-60%RH in these environments should have been legislated years ago. But it takes investment, and the focus is typically on keeping costs connected to these buildings to an absolute minimum.

However, considering the gigantic cost of the pandemic on society, both at a human level and a financial one, we must invest now to improve the safety of our buildings and limit the threat of future pandemics.

What is the current guidance regarding humidity levels for public buildings?

Organisations such as the Chartered Institute of Building Services Engineers have been recommending 40-60%RH as the optimum indoor humidity for human health for years. But we need these advisory recommendations to become legislative building codes before we’ll see large scale humidification of public buildings to reduce seasonal illness and protect occupants health.

I see. I suppose that would be similar to – how ventilation of buildings is now being promoted by politicians and bodies like the World Health Organization. So how does ‘humidity control’ fit alongside ‘increased building ventilation’ Dave?

Good question. I think it’s great news that healthier levels of ventilation for buildings are now being set by politicians and the people managing our buildings. Ventilation physically removes pollutants, such as COVID, from the indoor environment. But it’s not the only strategy we should be employing to maintain a safe indoor atmosphere.

Ventilation during the winter, can in fact, dry an indoor atmosphere even more. More heat being applied to dry winter air, means even lower indoor humidity. So increased ventilation alone might be removing viruses from the air, but it will also be drying our nose and throat even more, making us physically more susceptible to infection.

So how does humidity control fit alongside ventilation? Well, in buildings with centrally managed air conditioning systems, a humidifier can be installed in the air handling unit without issue. This ensures that the building’s humidity is kept at an optimum level, along with the levels of ventilation. We do this all the time and it’s standard practise. But it does obviously need more investment.

And how about buildings where there is no centrally managed air conditioning system?

For buildings without central air handling units and ducting, humidifiers can be installed that introduce moisture directly to the rooms. These could be mobile units, wall-mounted steam humidifiers or systems that spray purified water from nozzles. The type of humidifier really depends on the layout of the building. Again it does need investment, but that’s that same as any aspect of indoor air quality management. Whether it’s heating, cooling, ventilation or humidity control. There is a cost associated, but if the cost means safer buildings, reduced infection rates, less burden on our health services, fewer unnecessary deaths and potentially avoiding lockdowns, then there certainly is an excellent return on that investment.

Thanks Dave. If there’s one message you wanted to leave our listeners with, particularly those working in the types of buildings you mentioned, like hospitals and schools, what would it be?

It would be to get to know your indoor humidity. Buy a cheap hygrometer, for just a few pounds. This is something that measures and shows you what your indoor humidity is – just like a thermometer shows temperature. If it’s consistently below 40%RH, ask your line manager or building manager what the options are for managing your indoor humidity better. If they need more information on why or how to do this, there’s plenty of info on our website at Condair.co.uk.

Well, Dave thank you again for joining us today – on this special edition BNE Product News ‘Brand Leader’ interview podcast – to discuss why ‘Understanding The Relationship Between Health And Humidity Is Key To Optimising Indoor Air Quality’

Thanks very much Mick. I really enjoyed it.

That’s a pleasure. Cheers.

For more information about Condair please go to www.condair.co.uk  

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‘BNE Bite-Sized Learning podcast series – Swimming Pool Ventilation industry update for 2022’

Recotherm ‘Brand Leader’ Interview Podcast – Transcript to support learning

Every effort has been made to flawlessly transcribe the interview to support learning but please consider the recorded audio of the interview as the actual source of information for learning purposes.

Hi, this is Mick de Leiburne for BusinessNet Explorer and welcome to the latest BNE Brand Leader interview for our BNE bite-sized learning podcast series for Construction & Building Services product specifiers – today we are joined by a very popular industry thought leader guest on this podcast – Martin Killen – MD at Recotherm – to provide specifiers with a Swimming Pool Ventilation industry update for 2022, covering Covid 19, Sustainability and Future Trends.  

Hi Martin, thanks for breaking into your busy schedule to share some of your specialist industry knowledge on these key specification topics.

Hi Mick, thanks for inviting me

Always a pleasure

Martin, first could you give us an update on the Covid 19 situation with regard to Swimming Pools?

We have been working with Covid 19 limitations now for two years, and although I know of a number of friends and family that have caught Covid in a hospital, I haven’t heard of anybody who has caught covid in a swimming pool. But we’re still advising caution, and as always, recommending fresh air ventilation to control the pool hall environment. Not only because of the Covid situation, but because it gives a better environment and is cheaper to run.

Let’s move onto the increasingly pressing issue of Global Warming and currently available HVAC options to support Sustainability objectives?

Yes, we’re dealing with the government’s attempt to counter the effect of global warming. I think we’reall aware that the government will ban the use of conventional fossil fuel boilers in new houses in 2025, and they are actively promoting heat pumps, as their preferred alternative.

The problem people need to be aware of is that if you buy a 27kW boiler it will provide 27kW if installed correctly. If you buy a 27kW heat pump its output will depend on the flow temperature required, and if it’s an air source heat pump it will also depend on the ambient air temperatures. What you must take into account is that a conventional radiator system would have been designed to run with water at 70 to 80 oC. You will not get the same performance out of them if you supply water at 50 oC. There are units on the market that can run at low temperatures and provide high temperature water for your radiator systems, but the efficiency drops right off and you will find your energy bills increasing because you are replacing gas with electricity which can be as much as 5 times the price.

Can heat pumps be used in Swimming Pools to mitigate the effects of Climate Change?

In the swimming pool environment, we have to keep the air temperature close to the temperature of the pool water, and as most clients want the pool at around 30oC it can become quite challenging to achieve with water off a heat pump at 50oC. In some cases, you would have to increase the size of the unit in order to get the required amount of heat into the building, or, you could just except that the unit will not be able to maintain a temperature of 30oC when it is 0oC outside. In Britain it is very unusual for the temperature to be at or below 0oC during the day so accepting that the temperature will be a little lower, say 28oC, could save on running cost and prevent you having to buy a larger and more expensive ventilation unit.  You may also be able to reduce the size of the heat pump, and I believe, that most people would not notice the difference between 30oC and 28 oC air temperature in the pool hall.

What Alternatives could be made available?

An alternative to the ground or air source heat pump that produces water would be a unit where the refrigerant coil was fitted directly into the AHU, therefore eliminating the need to produce water. This is what we at Recotherm have done with the Aerum unit, which has all the features of the Aeris unit with regards to control of the pool hall humidity, but instead of being connected to a boiler or air to water heat pump, the unit is part of the heat pump.

One major advantage of this is that you get substantial cooling in the summer.

Are there any cost implications with this alternative use of the technology?

Yes, this solution is more expensive than the standard Aeris unit connected to a boiler, but, given that after 2025 you will not be able to install a boiler in a new home it offers a real solution … with some advantages. We have been working closely with one of the major suppliers of air conditioning units in the UK to give customers an alternative to the air to water heat pumps. The advantage of working with a major supplier is that we get the latest technology, using the best and most efficient compressors, and running with the least environmentally damaging refrigerants. It also means that there is a network of service engineers in place from day one if you have a problem. And if the units are installed by a qualifying company, the units come with a 7-year warranty.

So, it is an interesting time to be working with swimming pool ventilation units.

Finally, just to round up this 2022 update for the Swimming Pool Ventilation industry, how about Future Trends – what could be made available next for industry specifiers?

I still think filtration will become more important, particularly with the Covid situation. What you need to know is that Covid does not float in the atmosphere, it attaches itself to particles in the air. Obviouslythe less particles in the air and the smaller these particles are the less likely it is to transmit. We have filters that are 70% efficient at 0.1 micron so potentially could be Covid safe, but Covid isn’t the only reason to fit high efficiency filters. Our cities are so dirty that it is starting to cause respiratory problem and filtering to this level will make a big difference.  

Well Martin, thank you for this update, very educational as ever, with a lot of really useful information and industry insights for specifiers listening to this podcast to take away with them. We wish the Recotherm brand the best of luck with its ongoing pioneering and as always innovative product development adventure for 2022.

Thank you Mick

Cheers

For more information about Recotherm swimming pool ventilation systems – please go to www.recotherm.co.uk

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‘Good Ventilation: QUIET VENTILATION SYSTEMS’  

Vortice ‘Brand Leader’ Interview Podcast 3 – Transcript to support learning

Every effort has been made to flawlessly transcribe the interview to support learning but please consider the recorded audio of the interview as the actual source of information for learning purposes. 

Hi this is Mick de Leiburne for BusinessNet Explorer

And welcome to the – third out of six – in our ‘special edition’ bite-sized learning series of ‘Brand Leader’ podcasts, where we discuss how Good Ventilation can be achieved in the home and in the workplace with Vortice thought leadership and product solutions.  

Well, as the world increasingly recognises the role of Good Ventilation, Jennifer Quinn, Technical and Marketing Manager at Vortice joins us today to talk about Quiet Ventilation Systems and why she is shouting about their new Lineo Quiet range …  

Jennifer joins us on the phone… 

Hi Jennifer, thank you for making time in your busy schedule to allow us again – to tap into your knowledge – on the key areas of Good Ventilation on the BusinessNet Explorer podcastand today we are focussing on The Importance of Quiet Ventilation.  

Hi Mick, yes I am looking forward to discussing the need for Quiet Ventilation Systems and our brandnew Lineo Quiet range today.

Jennifer, good to have you here with us today.  Why should we be concerned about the noise that our ventilation fans make?

Several years ago the UK’s Chief Medical Officer noted that noise is second only to poor air quality in its effect on human health, so we’ve been working for a long time developing acoustically lined fans for our ranges so that we can make our ventilation systems as quiet as possible. There’s nothing worse than the drone of a noisy fan if you’re trying to relax, get to sleep, read or work. Also research shows many people turn off extractors due to noise which can then in turn lead to issues with mould and damp and problems further down the line.

What specific products has Vortice developed with noise in mind?

Our already established Lineo fan range now includes the Lineo Quiet and the new Lineo Quiet ESrange, Other units include the axial Punto Evo Flexo and our heat recovery units the Neti and Avel.

What’s special about the Lineo Quiet?

The new Lineo Quiet range is the ventilation equivalent to a Swiss army knife, designed to offer an effective solution to a wide range of ventilation demands, resulting in a powerful tool for both the installer and the end user. VORTICE wanted to create a powerful fan range whilst keeping the unit extremely quiet.

The fan has therefore been redeveloped with special sound absorbing material to help absorb the sound and flow straighteners and re-designed straightening veins inside the unit to ensure a lot less energy wastage. The energy efficient Lineo Quiet ES also offers an acoustically lined fan and is equipped with electronically controlled brushless EC motors.

Another great feature of the new Lineo Quiet range is that it is environmentally friendly, very easy to fit and maintain and its recyclable and has been designed for disassembly.

How quiet is quiet?

Quiet is down to interpretation and is very personal. However as a general rule the dba of the units when installed correctly with the correct sound attenuators would be no noisier than rustling leaves.We do have a vast amount of sound data which has been tested and published and these units are one of the lowest dba’s on the marketplace.

Just how important for your health is it to be in a quiet environment?

You know when you suddenly notice a noise, you can’t un-notice it?  Well after a while that becomes really stressful, it can even bring on increased blood pressure levels, heart attacks and stroke, never mind disturb your sleep patterns.  

VORTICE recognises that noise can be a serious issue for many people and therefore always ensures the lowest possible dba is achieved to help create a harmonious environment.

Does Vortice have any plans to launch any other quiet fans to its range?

Yes, noise levels are an important marker in our new product development programme, so I know there are already several more quiet fans in development.

Noisy appliances can be really invasive to the living or working environment, so anything we can do to do keep noise to the minimum obviously helps. The worst scenario for us would be people turning off fans in order to stop the noise, which would then result in poor indoor air quality. Vortice always wants to ensure that their fans are being used as they should be to create a quiet and peaceful environment to enhance their health.

Well Jennifer thank you again for joining us today on this – third in a series of six – special edition BNE Product News ‘Brand Leader’ interview podcasts with Vortice discussing best practice in Good Ventilation.

Thank you Mick, thank you for your time today

Always a pleasure. 

 For more information about the Vortice range of products, please go to www.vortice.ltd.uk 

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