Richard Metcalfe, Sales Director at ICS Cool Energy, outlines how companies can benefit from The Carbon Trust’s Green Business Fund, offering potential grants of up to £5k on eligible equipment.
Our focus on energy efficiency as a nation continues to grow as a result of rising energy bills and of course government legislation, placing increasing pressure on businesses to reduce consumption and become more efficient. While some aspects of our rising energy use are linked to technology, such as the growth of global communications and IT networks, others such as space heating and process cooling remain a necessary evil. Or so it seems.
When developers demanded very low sound limits for two new apartment building in London, Cool-Therm worked with contractors to come up with the answer.
Cool-Therm has supplied an ultra-low sound, high efficiency 1.8MW air conditioning solution for a prestigious development of luxury apartments in London’s Westminster.
One of the simplest and most cost effective ways of improving the chiller cabinet’s energy performance is to upgrade the fans from AC to EC. The EC fan concept uses a high efficiency permanent magnet motor, as opposed to the AC induction motor traditionally used.
EC fans incorporate on board electronics which allows control of the power input to the motor, thus achieving the required fan speed. Utilising EC fan technology in chiller cabinets results in far lower running costs than traditional AC fans, and consequently lower ‘life-time costs’.
Upgrading can result in a reduction in energy consumption by up to 70 per cent, giving businesses payback on their investment in as little as two years. Despite this, many stores still rely on older models which are noisy, have high heat load and poor carbon footprint.
By Alan Jackson and Stewart Bonner, BJA Refrigeration Consultants
Refrigeration system energy consumption typically accounts for 50-70% of operators' running costs. Through good practice and taking advantage of available technology, you can reduce the operating costs associated with refrigeration through:
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.
By Alan Jackson - BJA Refrigeration Consultants
Consultants BJA are reminding businesses that they have to be Energy Savings Opportunity Scheme (ESOS) compliant by 29th January 2016. ESOS means that companies have to audit their energy usage.
Around 3,000 UK businesses have not told the Environment Agency (EA) that they intend to follow the ESOS legislation. If an organisation meets the qualification criteria but fails to follow the legislation, it could face a fine of up to £90,000.
After the deadline, companies that have failed to notify the EA will see enforcement action begin. To encourage businesses, the EA recently sent out informal warnings to organisations that have not advised them they were ESOS compliant. That meant around one third of all businesses eligible for the mandatory scheme received the warning.
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.
The Bank of England is saving around £3,000 a week off its energy bills thanks to a £6.5 million project to replace chillers and plant used to cool the building and its 'critical infrastructure'.
The project used new Carrier chillers which replaced three old centrifugal chillers and two reciprocating chillers with a combined capacity of 4.2MW. The new chillers are very efficient variable sppeed chillers with a capacity of 5.8MW. In spite of the increased demand on the chillers, the Bank of England will save thousands a week thanks to the new chillers, as well as redcutions in carbin emissions and other running costs.
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.
Legislation such as Part L and Part F of the Building Regulations and the Energy Performance of Buildings Directive have turned the regulatory guns on energy use within our buildings as never before and the situation is only going to get stricter as the Government looks for ways to meet the country’s carbon reduction targets.
A range of measures have already been introduced, such as the updated F-Gas legislation, which is aimed at eradicating HFCs from air conditioning equipment, and the Energy Savings Opportunities Scheme (ESOS) which will bring efficiency sharply into focus for large organisations. For many landlords the situation is also reaching a critical point with the looming deadline of 2018 for buildings which are let to reach a minimum energy rating of E. This means that landlords of F and G rated buildings will be unable to let them out after April 2018 unless they take active steps to improve the efficiency of the building.