About Indus3Es Project

The Project

Large quantities of waste heat are continuously rejected from industries. Most of this waste energy, however, is of low-quality and is not practical or economical to recover it with current technologies. The Indus3Es project will develop an innovative Absorption Heat Transformer (AHT) for this purpose, focused on low temperature waste heat recovery (below 130ºC, referred to a recovered waste heat source temperature). The Indus3Es System will effectively recover and revalorize almost 50% of the low temperature waste heat, increasing quality of the waste source to the required temperature and reusing it again in the industrial process.


The main objective is to develop an economically viable solution for industry, appropriate for existing plants and adaptable to various industrial processes. The developed system will be demonstrated in real environment in Tüpras, the main petrochemical industry in Turkey, enabling to analyze besides integration aspects, operational and business issues. Indus3Es System will be defined and optimized for different specificities in different sectors and industrial processes, for which up-scaling of the demonstrated technology and replication studies will be performed. Market potential evaluation and business analysis will be developed by industrial partners in order to guarantee a successful exploitation of the system in a near future.


Indus3Es system will have a relevant impact making possible an energy efficiency increase and reduction of primary energy consumption of most energetic intensive industries in Europe. The embodied energy, the environmental footprint of the products and the manufacturing costs of energy intensive industries will be reduced, increasing the competitiveness of European products. Moreover, it will allow a sustainable economic activity for local “auxiliary” companies, usually SMEs, in high added value services related to the energy efficiency measures for industry.

First year project results

One of the first activities performed in the framework of the Indus3Es project was the analysis of applicability of the developed technology in different potential industrial processes, considering SPIRE (Sustainable Process Industry through Resource and Energy Efficiency) and non-SPIRE sectors. For this purpose, the different sectors were analyzed in depth, focusing principally on temperature levels, capacities and possible heat sources and heat sinks, which can suit AHT requirements. Results showed that many industrial processes are suitable for integration of AHT technology. Sectors which are especially promising are the petrochemical, pulp&paper, and ceramics sector; followed by water and non-ferrous sectors, where it can be integrated in special applications. Cement and steel sectors showed too high temperatures for AHT integration.

Some processes of interest for integration of AHT in the petrochemical industries include their use in distillation columns or combination of AHT in heat exchanger networks, having a high potentiality to be used in these kinds of plants, due to the amount of hot and cold streams and the high capacity of the processes. Regarding the pulp&paper industry, it is possible to recover heat from the steam leaving the cyclones in the pulping process, to be revalorized and used in the drying section. In the ceramics sector, heat recovery from the exhaust gases of the cooling process could be used to drive an AHT, for energy use in the drying chamber. AHT can be used in the water sector in certain processes, such as multi-effect distillation and multi-stage flas distillation processes, or water desalination. Finally, in the non-ferrous sector, AHT integration could be more difficult, but the possible applications would be linked to cooling systems and external steam grids close to the waste heat generation.

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