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Saturday, December 19, 2015 4:14:45 PM
Hydricity. It’s a concept developed at Purdue, combining two types of solar panels, photovoltaic or PV panels producing electricity and concentrated solar panels, or CSPs, producing heat, fuel cells, and steam turbines to not only produce power efficiently, but to do so 24 hours/day.
This has always been the problem for solar systems. What happens when the Sun goes down? In the past the answer has generally been, batteries. CSP systems like the one at Ivanpah in the Mojave Desert also produce power all night, by using the residual heat from the day’s power production.
In the system proposed by Purdue, the PV systems produce both hydrogen gas during the day, from the steam, which would be used by the fuel cells, at night, to keep the turbines generating power after the Sun goes down. The team claims the system produces hydrogen with an efficiency of 50% and electricity at an efficiency of 46%, more than double the efficiency of the best solar panels currently on the market. Best of all, they don’t need expensive batteries – the system is self-contained.
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