Nick Baldwin, of air management specialists Mansfield Pollard, looks at the challenge of striking the right balance between Indoor Air Quality and energy efficiency.
Outdoor air pollution levels and energy efficiency are frequently talked about in the media and, most recently, the topic of Indoor Air Quality (IAQ) has been making the headlines. But the fundamental principles of energy efficiency and good IAQ are at odds. Energy efficiency requires a tightly sealed building to minimise the escape of heated or cooled air, reduce outdoor air infiltration, and restricted use of HVAC systems; good IAQ calls for sufficient quantities of clean air to enable a sense of wellness without toxic pollutants and for carefully controlled temperature and humidity.
Jim Smyth, CEO at onesynergy, creator of the PAVEL air extraction unit, discusses how ground-breaking air ventilation components can combat high energy prices and consumption levels.
Energy consumption in buildings and properties continues to spiral, despite warnings of an energy shortage, and the damaging effect it is having on our environment. Between 2014 and 2015, energy consumption in the UK grew by 1.9 per cent (source - Gov.uk). Not only is the consumption of energy increasing, but so is its price.
Market experts at ICIS, an independent authority on UK electricity market pricing, have revealed that in the second quarter of 2016, the price of gas climbed 29 per cent, while wholesale electricity prices swelled 25 per cent (source - ICIS). The price of energy and its consumption is clearly a pertinent issue for the UK.
Air management for laboratories is often overlooked in projects to improve university energy efficiency, but this can be an expensive mistake.
By Ian Thomas, Product Technical Manager – Air Products, TROX UK
Responsible for between 50% and 80% of the energy bill for a research-intensive university, laboratories typically burn between three and four times more energy than general teaching spaces.
Universities are increasingly aware of their environmental performance – both from the perspective of cost, and due to the increasing visibility of performance data in green league tables such as those produced by People and Planet. So those companies able to offer universities specific solutions for reducing lab energy consumption will easily excel in competitive tenders.
So how do you approach a lab-specific air movement strategy?
Mike Cook from Pole Star Products and Dr Jun Yao from the University of Lincoln's School of Engineering explain their research into achieving energy savings with fan and motor combinations.
Getting the right airflow from a fan is critical to the overall performance of any refrigeration equipment. Manufacturers run many exhaustive tests to ensure that the correct motor power, speed, fan blade diameter and pitch are selected to give the best overall performance for their piece of equipment. With the introduction of the energy saving EC (electronically commutated) fan motors, many companies are retro-fitting stores refrigeration equipment to achieve much improved energy consumption but are they fitting the correct fan/motor combinations in line with the original equipment design?
With fan exchange & compatibility in mind, Pole Star Products Limited has enlisted the help of (MEng) Mechanical Engineering students at The School of Engineering, University of Lincoln, to build a test facility capable of producing accurate performance data and detailed fan curves. Armed with this data, customers can be sure that the original fans will be replaced with units giving very similar airflow as specified by the original manufacturer. Figure 1 represents typical fan components in service supplied by Pole Star Products Limited.
In many instances, upgrading fans to an electronically commutated (EC) centrifugal model is the most cost-effective method of ensuring that a ventilation system is both Ecodesign and ErP (commonly known as Lot11) compliant.
Here, Clive Greenstreet, Category Product Manager at Airflow Developments explains.
By now, readers will be well aware that the 2015 update to the Energy-related Products Directive (ErP) requires all industrial fans and motors to comply with stringent energy efficiency requirements. This is because the European Union is committed to reducing its CO2 emissions by at least 20 percent by 2020.
European commitments to reduce energy usage by 2020 have set demanding limits through the ERP directives for energy consumption and noise. If an air movement system is perceived as being noisy it will be inefficient.
Written by Dan Hopkins, Technical Manager at ebm-papst
Whilst the amount of primary energy converted to noise in an air movement system is very small, the cause of the noise will have the greatest impact on the energy consumed. Combining high efficiency drive motors with aerodynamically efficient design requires intelligent thinking coupled with numerical modelling techniques. ebm-papst has used these tools to analyse the performance of their product range and has developed a number of innovations that optimise the passage of air through the fan.
Will Hawkins visits the air movement specialist, Fläkt Woods, at its factory in Colchester to hear how the business is developing.
I met Ian Morehouse, the UK Managing Director, Operational Marketing Managers, James Griffiths and Andy Cardy who gave me a detailed insight into how they are adapting to a competitive market.
Fläkt Woods has been in Colchester since 1909 producing fans. It now turns over £66 million in the UK, with around 350 employees, and makes about 7,000 fans a month. The global business specialises in two market sectors, namely 'air comfort' and 'fire safety'. Their solutions go into all types of buildings including offices, factories, shops, schools, power plants and hospitals. One fact about Fläkt Woods is that about 85,000 buildings in the UK contains one of their fire safety or ventilation fans.
Bassaire, in conjunction with composite panel construction specialists, ISD Solutions, recently built a clean air solution for the contract health supplement and sports nutrition manufacturer, The Nutrition Group.
The new, 1,365m2 clean manufacturing site in Blackpool is an ISO class 8 factory that includes a packing area, tablet and supplement production location.
The airtight production area is atmosphere controlled to keep unwanted particulates out of the clean area. An air handling unit supplies and extracts the HEPA filtered air via corridor ceiling grilles.
Phil Marris, Managing Director for Jaga Heating Products, discusses the considerations building services specifiers must be aware of when providing ventilation in healthcare buildings.
There are certain scenarios that increase the importance of the choices made when designing ventilation systems. In healthcare – where the careful specification of all building services is crucial of course – indoor air quality (IAQ) is an issue which has a direct impact on what matters most: the welfare of the patients.
Ventilation, literally, is the provision of fresh air into a space. The problem is, the word fresh is not always entirely accurate. The air might flow throughout every room of the building, and in a hospital or care home, patients and occupants are vulnerable and at a high risk of contamination and infection.
Prevention is protection – protection of the patients themselves, which in turn protects the provider from liability.
Perched on a hillside overlooking a landfill site and the city of Bradford are the office and factories of Mansfield Pollard, the bespoke air handling and refrigeration equipment manufacturer.
The company began in 1866 making ductwork for the woollen industry, of which Bradford was the world centre of that business for a time. In their reception area, there is a original sheet metal order from 1929 which reinforces the pedigree of the business when you arrive.
Mansfield Pollard’soffice sits amongst the gritty landscape of the city, surrounded by a mix of homes,local football pitches and other industries.It is not glamorous but, who cares?