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Case Study

BMW Plant in Oxford

BMW Oxford Production Plant

Putting steam efficiency in the driving seat

Plant Oxford – the production site for iconic car brand MINI – has undergone significant development over the years. In a bid to improve energy efficiency across their site.

With ever-increasing pressure to improve energy efficiency in the UK, car manufacturers are leading by example. Plant Oxford – the production site for iconic car brand MINI – has undergone significant development over the years. In a bid to improve energy efficiency across the site, steam specialist Spirax Sarco was called upon to transform its current hot water generation system and deliver enhanced operational and energy savings.

The Oxford facility has been established since 1913, initially producing the two-seater Morris vehicle, but it was in 1959 when the first Mini rolled off the production line. Today, MINI is part of the BMW Group and many of the variants are built in its factory in Oxford.

One area that has benefited from modernisation is the site’s steam-to-hot-water heating system. Spirax Sarco’s team of steam experts were asked to review the existing installation. Tasked with optimising efficiency and reducing costs, Angelo Giambrone, Business Development Manager at Spirax Sarco, played a key role in the project.

EasiHeat heat exchanger

EasiHeat Solution

Getting into Gear

"The existing installation comprised of three large shell and tube calorifiers. Traditionally, calorifiers were a popular way to deliver hot water, but in recent years there has been a great deal of development with steam-to-hot-water systems which has helped to improve efficiency and safety,” says Angelo. “The old units were mounted at high level, which made maintenance a consistent challenge. This was particularly evident when the units underwent insurance inspections.”

“The best course of action was to completely remove the three large calorifiers. As with many facilities, space is a premium and the new solution needed to fit into a much more convenient location. We replaced the old units with high efficiency EasiHeatTM systems which use the latest in plate heat exchange technology,” comments Angelo. “As each EasiHeatTM is a pre-fabricated package, it meant installation was simple. The smaller footprint has allowed the new units to be sited in a practical location at ground level. They’re also not subject to the same strip-down pressure testing as the shell and tube systems, which helps deliver operational and maintenance savings too,” says Angelo.

“As each EasiHeat is a pre-fabricated package, it meant installation was simple. The smaller footprint has allowed the new units to be sited in a practical location at ground level. "
Angelo Giambrone, Spirax Sarco Business Development Manager

Each of the EasiHeatTM packages come equipped with a standalone PLC Energy Management System, which has provided Plant Oxford with much improved temperature control. “The control system helps to utilise all of the useful energy available in the steam, which in turn reduces fuel demand and associated CO2 emissions. This essentially means that the savings achieved are now contributing to the overall system efficiency. “Removing the old calorifiers was a major decision for the business but by doing so the site has benefited from improved safety and reduced maintenance. Plant Oxford is now able to provide consistent low temperature hot water to their heating system using modern heat exchange technology to deliver it efficiently and safely.”

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