Keeping Tyseley on Track
When Veolia Environmental Services required a specialist conditioning chemical supplier for the boiler water at its Tyseley Energy Recovery Facility it turned to ELGA Process Water for help. The Tyseley plant incinerates 350,000 tonnes of Birmingham’s non-recyclable rubbish each year and exports 25MW of electricity to the National Grid, suitable to power over 41,000 homes. The facility has two 45bar 400°C water tube boilers delivering 67 tonnes per hour of steam to the high pressure turbines. It also has a 10bar waste heat shell boiler fuelled by a clinical waste incinerator, and this supplies steam to a low pressure turbine.
In order to maximise boiler efficiency, the quality of the water fed to the boilers has to be carefully controlled. Tyseley produces high purity deionised water on site and adds chemicals to scavenge oxygen and adjust the pH to prevent corrosion. The combination of two types of boiler with common feed water and condensate systems means that controlling the boiler water chemistry at Tyseley requires a specialist solution. ELGA Process Water, a Veolia Water
Solutions & Technologies company, carried out a detailed site survey with technical support from their Boiler Competence Centre. A solution was developed, which included the appropriate chemicals from their Hydrex range to provide protection of the boilers, turbines and condensate system, as well as recommendations for regular service support to maintain ongoing boiler efficiency and optimal performance.
Andy Bullock, Operations Manager for the Tyseley facility is pleased with the result: “ELGA Process Water worked closely with us to achieve the appropriate boiler water quality and we’ve been particularly impressed with the technical support from the Boiler team and their readiness to formulate bespoke conditioning chemicals for our system.” Email:
sales.uk@
veoliawater.com www.elgaprocesswater.co.uk
Cool Air Curtains Down Under
JS Air Curtains has supplied six Zen air curtains to The Reef Hotel Casino in Cairns, Australia. The units were installed by Haden Engineering Ltd to help solve a condensation problem due to an average daily maximum outdoor temperature of 29°C.
Glyn Wakeman, Sales Engineer at Haden, commented, “The problem was that hot air was being blown in when the doors opened resulting in condensation problems at the perimeter supply grilles and poor performance of the air conditioning. Since the Zen air curtains from JS have been installed, which come on as the doors open by relays – no BMS involved, they’ve stopped the hot air blowing in.”
In contrast to a typical UK air curtain installation, which is to provide protection from cold air entering a building, the Zen air curtain installation in Cairns shows just
how effective air curtains are at maintaining internal temperatures year- round, reducing heating and air conditioning bills.
The six 1.5m Zen air curtains were supplied to The Reef Hotel Casino in brushed stainless steel but are available with bespoke fascia panels in different materials, such as aluminium or wood, and can incorporate branding or signage. The Zen can provide up to 6,475m³/h of air and is capable of protecting doorways up to 3.5m high. It is available in 0.5m lengths from 1m to 2.5m and is offered with electric or water heating options giving up to 32kW of heat. Alternatively it can be supplied as an air only unit, as was the case in The Reef Hotel Casino. Airflow is provided by double in-let centrifugal fans with an external rotor motor. The discharge vents have directional airfoils to direct the airflow, creating a tighter seal across a doorway. Operation is via a five speed controller that is supplied with 20m of plug and play RJ45 cable. Alternatively it can be connected to a BMS.
JS Air Curtains supplies an extensive range of air curtains in the UK and abroad, as well as bespoke solutions, for all commercial and industrial applications. Email:
sales@jsaircurtains.com www.jsaircurtains.com
Building & Facilities Management – November 2010
Weatherite provides new heating
Weatherite Building Services has provided a new energy efficient hot water heater and pipe work system for an over 60s club in Walsall.
system for over 60’s club
The over 60s club at Bentley is run by Walsall Metropolitan Borough Council who awarded the contract to Weatherite Building Services. The replacement water heating system is more energy efficient than the previous system and is designed to substantially reduce water heating costs and be more environmentally friendly.
Weatherite supplied, installed and project managed the replacement of the system, working closely with the Walsall MBC and social services to ensure that disruption was kept to a minimum so the club could remain open to the community. Weatherite has carried out a wide range of building services projects at a number of council-run sites across the area including leisure centres, social care centres and schools.
“The client has been very pleased with the quality of our work across a range of other projects. Our tender for the over 60s club not only met their budget, we were also able to install the new system with minimal closure of the centre,” said Martin Thomas, Sales Director, Weatherite.
WBS has over 38 years experience in all aspects of building service including heating, ventilation, air conditioning, commercial kitchen ventilation/extraction, data centre/IT cooling, boiler house refurbishment/replacement and all aspects of M & E services. WBS offers its customers a complete building services solution-from one single source including total project management and full design, installation and commissioning activities.
WBS is part of the £40m Weatherite Group, one of the UK’s leading HVAC and Building Services organisations.
www.weatheritegroup.co.uk
energy solutions 23
HVRAC
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