wasteurbanenergy
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STUDYING THE POTENTIAL FOR RECOVERY OF WASTE URBAN ENERGY
WITH A VIEW TO THE OVERALL EFFICIENCY OF THE URBAN SYSTEM

Issues

At the Grenelle Environment Forum, France set itself the target of achieving 23% of its total final energy consumption from renewable and recycled energy by 2020. At present, most of the recovered heat feeding into urban heating systems comes from waste incineration plants and industrial sites. In order to meet the higher targets introduced under the Energy Transition Act, new sources of waste urban energy (water treatment plants, data centres, stations, commercial centres, neighbouring industrial sites) will need to be tapped.

DEFINITION

Waste energy is the energy generated by a process as a by-product rather than end product of that process. Diverse in nature (heat, cold, gas, electricity, etc.), this energy is lost, with potential disruptive impact on the environment, unless recovered or recycled..

2020

France’s Energy Transition Act calls for five times more homes to be connected to urban heat networks and an increase in the proportion of renewable and recycled energy supply from the current 25% to 75%.

Objectives

The “Waste urban energy” project sets out to foster the emergence of an industrial and engineering sector to recover and recycle this energy, ensuring that it contributes to the overall efficiency of the urban system. The project focuses on recovering waste urban energy losses to supply urban heating networks. It examines the most promising potential recovery sources (waste incineration plants, waste water, data centres, hospitals, etc.) in the light of the energy needs of a given territory, and the development of technologies for use at every stage in the recovery chain, with special emphasis on heat pumps.

Expected results

  • Development of a methodology to assess the potential value of a heat recovery process
  • Software for sizing of a local thermal loop

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