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Spirax Sarco has installed an Easiheat engineered system at Fox’s Biscuits in Preston to ensure the factory has a limitless and energy-efficient supply of hot water.

The factory decided to upgrade its hot water generation since the existing system of two, 1,000-litre calorifiers could not keep up with demand from the site’s cleaning operations, especially at weekends.

Graham Walker, central services charge hand at Fox’s Biscuits, said: ‘Although we are often producing at the weekend we don’t usually have every line running, so that’s when we wash absolutely everything.

‘The problem with calorifiers is that if you take out 500 litres, you have to put 500 litres of cold water in and start heating that up again.

‘It wasn’t very efficient and we couldn’t meet demand, causing delays in cleaning, and increasing our operating costs,’ he added.

The Easiheat system uses a steam-to-hot-water plate heat exchanger to provide domestic hot water on demand.

The compact system was supplied skid-mounted and ready to connect to the site’s utilities.

This approach is typically much more energy efficient than systems relying on stored hot water because it eliminates a significant proportion of heat losses.

‘Cost savings are definitely there, although I’m not in a position to say exactly how much we’ve saved,’ Walker said.

Usually, the installation of Easiheats enables an organisation to eliminate hot water storage entirely, but in the case of the Fox’s factory the site’s operating schedule means that the two calorifiers can still be used as buffers.

‘We might have people cleaning until five or six o’clock on a Saturday, but having the buffer vessels means we can turn off the boilers at three o’clock if we’ve finished producing, which further improves energy efficiency,’ Walker said.

The hot-water system is set up so that the Easiheat feeds the factory’s taps directly on demand and can also maintain the temperature in the buffer vessels when it would otherwise be idle.

The skid-mounted design of Easiheat engineered system uses 1.2m3 of space to deliver up to 1,800kW of heating power.

Installation is quick because the complete package only needs to be hooked up to the site’s services and commissioned, saving the time and costs involved in building conventional heating systems on site.

Furthermore, the whole package is factory tested and guaranteed to work as specified, eliminating the risk of compatibility problems between components.

Spirax Sarco benefits built on knowledge. Spirax Sarco has all the products, services and expertise needed to make the best investments in building and maintaining a steam or industrial fluid plant.

A complete and flexible range of services is available to cover any need from supplying an individual steam trap, to a complete new plant and everything in between. Spirax Sarco Services can help identify, improve and sustain steam system efficiency at every point in the steam and condensate loop.

In addition, custom-built solutions can be created to take a project from design and build to commissioning, support and scheduled maintenance on time and on budget. Pioneers in steam, Spirax Sarco has developed longstanding relationships with customers across a wide range of industries, including hospitals; food & beverage; pharmaceutical; oil and petrochemical; and waste and waste water. Forward thinking to keep you one step ahead As the market leader in steam systems, Spirax Sarco has the market presence and resources to keep abreast of the latest legislative and technological developments.

At the forefront of training Well-trained personnel are essential to achieving the best plant performance.

Spirax Sarco can provide all the training that your staff requires, either on-site or at the Cheltenham-based training centre, for nationally recognised qualifications including BTEC, City & Guilds and the Boiler Operative Accreditation Scheme (BOAS).

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