ZCB Zero Carbon Building / Ronald Lu and Partners

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Images credit ZedFactory

Advances in Producing Hydrogen by Mimicry of Photosynthesis

Image: Hydrogen spectrum, cosmiccandace

Last time we checked in on Thomas Mallouk's work applying biomimicry to generate hydrogen, he was reporting about 0.3 percent efficiency.

The Recoh-vert heat exchanger

When you shower, much of the heat goes straight down the drain along with the waste water. Hei-tech has developed a heat exchanger, the 'Recoh-vert', which instantaneously pre-heats the cold water pipe to the shower and/or water heater. The 'Recoh-vert' has been successfully applied in the Netherlands for several years, particularly in a large number of newly built homes.

The 'Recoh-vert' is designed to reduce energy consumption for domestic hot water. The hot waste water of the shower passes the heat exchanger on its way down the drain. The heat is exchanged with the water from the water pipe en route to both the water heater and the shower.

The 'Recoh-vert' is 2.1 metres in length and has to be mounted in a vertical position. It is therefore only suitable for installation if the shower is on the first floor. Due to its very high efficiency, the energy required for instant water heating or for hot water storage system will be reduced to only 40%.