National Theatre using visitors’ body heat to save energy costs

Photo: Zuzana Machálková, Czech Radio

Like many cultural institutions, the National Theatre in Prague is struggling with growing energy costs and increasing demand to operate in a more sustainable way. It has recently installed innovative new heat recovery technology – using the body heat emitted by audience members.

The historical building of the National Theatre in the centre of Prague accommodates nearly 1,000 people. A new technology that was recently installed there captures the body heat emitted by visitors and the heat radiated by spotlights, reusing it to heat or cool down the venue.

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Authors: Ruth Fraňková, Zuzana Machálková