www.swimmingpoolnews.co.uk
EnergySavings JUN 2011 SPN EJ Bowman has launched
a new and improved range of stainless steel and titanium swimming pool heat exchangers
“Unlike a conventional automatic cover, which has to be removed before swimming, Heatsavr is available to do its job 24 hours a day since it works whenever the pool is sufficiently calm.”
EJ BOWMAN MAKES MORE ENERGY SAVING STRIDES
EJ Bowman, one of the world’s premier manufacturers of heat exchangers, has launched a new and improved range of swimming pool heat exchangers which now includes stainless steel and titanium units capable of heat transfer rates of up to 320kW.
These new products are designed to complement Bowman’s existing cupro nickel range, which is suitable for heat transfer up to 1050kW, giving the company one of the most comprehensive product ranges currently available. Bowman has made impressive strides forward in energy transfer via their heat exchangers, with units generally increasing the pool water to the required temperature up to three times faster than most competitors, reducing both energy consumption
and CO2 emissions and this is due to the high efficiency design and quality materials used. The result is a significantly more efficient transfer of heat from the boiler water circuit to the pool water circuit, in a design that is more compact and efficient than many competitors’ products. Suitable for resort type complexes, domestic pools, spa pools and hot tubs, Bowman heat exchangers are manufactured using corrosion resistant materials, whilst the end covers and tube stack can be simply removed for easy routine cleaning or maintenance.
ATTENTION TO DETAIL URGES JC LEISURE Energy savings experts JC Leisure says the trick is attention to detail. It has worked closely with one national client to reduce energy consumption by just replacing the underwater pool lights with energy efficient LED’s. This has been rolled out at all 82 sites, saving them approx £10,265 a year. Director, Jamie Bewers says energy savings is about good quality routines and systems. “Ensuring all plant is running at peak loading will help reduce energy consumption. Also ensuring aging plant is renewed before it breaks down will cut out facility downtime. For example if pool filter pumps fail the pool will lose heat, so the reheating cost will be
saved. Routine/planned preventative maintenance is always far too low on the priority list. We are still in the fix it when it breaks culture which in the long run is more costly.” Chris De Kretser executes the JC Leisure Solutions pool operations training programme and says; “Having fully trained staff who understand the functionality of the plant room is also key when avoiding costly energy wastage. Knowing how to do a simple task such as keeping a filter pump basket clean and free from debris will ensure the pump is not working harder to circulate water therefore using more energy. A well maintained pool plant is a more efficient pool plant, the more staff training/awareness the better. The potential energy savings are huge as well as the money they will save on costly engineer call outs.”
INTEGRATED POWERMASTER SYSTEM CLAIMS 70% SAVINGS
Energy saving technology expert Powermaster has launched an Integrated Water & Energy Management System (IWEMS) that reduces electricity consumption and the associated chemicals costs in a swimming pool or spa by up to 70%. IWEMS also provides web based remote monitoring for optimal tuning of system parameters and accurate reporting of performance, energy saving and fault detection. IWEMS is the first system to regulate pump speeds automatically in accordance with the number of bathers in the pool. Existing installations have shown potential savings up to 70% of electrical energy together with 30% of chemical costs. A typical application will see 50% savings in power as well as the resultant carbon emission reductions. Using IWEMS the motor speed in pumps and air handling units is controlled via Variable Speed Drives, which are an essential part of a modern energy-efficient plant room. As a result, IWEMS can make real time adjustments to maximise energy efficiency. This means air handling units and pool pumps are automatically optimised according to their running requirements, leading to significant energy savings.
For example, were pump speeds reduced to an average 70% of full capacity, this would reduce power consumption by 73% – saving thousands of pounds a year and substantially reducing carbon emissions.
For swimming pools that already incorporate variable speed drives (VSDs) in their control systems, IWEMS is the next step. The circulation of water using filtration pumps is crucial for safe and efficient pool water management. As a result, IWEMS also monitors a variety of functions including injecting and mixing water treatment chemicals, such as chlorine and pH correctants, and heating the pool and distributing heated water within it. When water quality exceeds a pre-defined threshold, pump speed can be
61 CASE STUDY
‘I DID NOT REALISE WHAT SAVINGS CAN BE ACHIEVED’
A swimming pool has a huge energy demand. Arch Water Products was invited to conduct a plant room survey at a 20-metre community pool in Creswell, Worksop. The aim was to assess how the systems of water treatment could be improved to reduce energy use and the carbon footprint. Built back in 1927 and operated by Bolsover District Council, Creswell Pool was chlorinated using sodium hypochlorite with pH correction using sulphuric acid. The automatic control was a probe-based free chlorine and pH monitor. In an attempt to control Total Dissolved Solids the whole pool water volume was being replaced every eight weeks. Centre Manager Paul Blakemore asked Steven Gallagher, Area Technical Manager for Arch Water Products, to provide a way for the pool to be more environmentally friendly and ensure the water quality did not suffer. The facility had four deliveries of 1,000 litres of sodium hypochlorite a year and in 12 months it is believed that the pool emitted seven tonnes of CO2.
It was suggested that the facility should change the sodium hypochlorite chlorine donor to HTH calcium hypochlorite. By looking closely at the operation of the plant room, together with the free chlorine concentration a large cost-saving was put in place.
Creswell Pool now keeps its TDS within recommended guidelines without the need for extra dilution. The pool water is a sparkling blue as there is extra calcium being added. The operational costs have been reduced substantially.
The costs of buying in, and disposing of, water have reduced by £2,600 per annum; the costs of heating make-up water have been reduced by £1,500 per annum and there has been a reduction by about 20% in the chlorine consumed.
Paul Blakemore said: “The costs of our operation have been reduced substantially. I did not realise what savings can be achieved just by revisiting the chemicals we use in the plant room. This facility is a small community pool with a relatively small volume of water, so how much could a large swimming pool save in terms of operational costs and energy?”
i FOR FURTHER INFORMATION
F ARCH WATER ( 01977 714100 :
www.hth.co.uk
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92