Nexus targets process heat, micro-grids with land-saving design

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Source: FCBI Energy

Start-up Nexus Renewables is developing a linear parabolic reflector and thermal storage system which reduces land use by a third compared with other trough plants, Kevin Friesth, company CEO, said.

Nexus Renewables plans to launch a pre-commercial prototype with mirror surface 4,046m2 at the end of May, targeting the industrial and localized micro-grid markets, Friesth said.

There are a number of potentially significant CSP markets, such as India, Israel or Italy, where space is at a premium.
Plans seen by CSP Today reveal a unique linear parabolic reflector design which Friesth says will be combined with a Stirling engine-based generation block and a range of thermal storage options.

The company’s ‘compact linear parabolic reflector’ system features two absorbers per row of troughs. These, along with two curved reflectors above them, maximise the output of the system by trapping heat usually lost by primary absorber reflection, convection and overshoot.

“Trough systems have attempted to reduce their convection losses with a glass-encased absorber system...yet amplified thermal input is only transmitted to...

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