Paul Brown, TruthDig
District heating pipes in Germany. (Mbdortmund / Wikimedia Commons)
Summary
Heating homes and offices without adding to the dangers of climate change is a major challenge for many cities, but reimagined district heating is now offering an answer.
A district heating scheme is a network of insulated pipes used to deliver heat, in the form of hot water or steam, from where it is generated to wherever it is to be used.
As a way of providing warmth for thousands of homes, typically in multi-story apartment buildings, district heating has a long history in eastern Europe and Russia. But the hot water it distributes typically comes from power stations burning coal or gas, which means more greenhouse gas emissions.
Tapping into other forms of producing hot water, from renewable energy, bio-gas or capturing waste heat from industrial production, supermarkets or IT systems, provides alternative sources of large scale heating without adding to the carbon dioxide in the atmosphere.
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