Circulation Control is Essential to Waste Heat Recovery Success

Circulation Control is Essential to Waste Heat Recovery Success

A few weeks ago my colleague Tony Shale spoke at the Automotive World’s Megatrends Europe 2014 conference in Brussel’s, the theme of the presentation was - Circulation control is essential to Waste Heat Recovery (WHR) success.

It is now universally recognised that WHR is the single biggest opportunity for large commercial vehicles to meet GHG legislation and deliver fuel efficiency gains for the operator.

Whilst 4-5% fuel efficiency improvements have been demonstrated on long haul highway vehicles, gains of up to 7-8% could be achieved on static applications (Gen Sets).

More importantly WHR is incremental to any other fuel economy improvements on the vehicle – such as aerodynamics, low viscosity oils, active compressors, variable speed water pumps, etc.

Most Rankine systems will use ethanol as the working fluid, requiring containment within a commercial vehicle environment. This fluid also drives the use of more expensive materials, bringing a cost and weight penalty, especially if off the shelf equipment is used.

To improve system viability from a business case perspective as well as enhanced system performance, IMI-Norgren is designing bespoke valves that improve the controllability of the working fluid, thereby enabling energy to be recovered from more points of the operating envelope. Bespoke designs also address containment, size and cost considerations.

This presentation describes IMI-Norgren’s approach to designing the previously overlooked heroes of a WHR system – the valves!

You can watch the presentation here:

http://www.automotiveworld.com/analysis/circulation-control-essential-whr-success/

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