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Estimation of waste heat and its recovery potential from energy-intensive industries

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Abstract

The recovery and reuse of waste heat offers a significant opportunity for any country to reduce its overall primary energy usage. Reuse of waste heat improves the ambient air quality by reducing both industrial pollution and greenhouse gas emissions from industries. This paper presents an estimation of thermal waste heat potential in five energy-intensive industrial sectors (i.e., iron and steel, chemical and petrochemical, paper and pulp, cement, and glass), based on data available in the extant literature and government reports. The findings show that both the chemical and petrochemical industries have the highest theoretical waste heat to power generation capacity for the selected industries. In addition, six individual plant data were collected for case study to determine their waste heat potentials. These estimates were further used to identify the power generation potential using the organic Rankine cycle based on economic advantages, whereby the iron and steel industries were found to have the maximum power generation potential of 66.5 TWh using its waste heat.

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Abbreviations

CHP:

Combined heat and power plant

GHG:

Greenhouse gas

GAIL:

Gas Authority of India Ltd

GWh:

Gigawatt hour

GCV:

Gross calorific value

HPL:

Haldia Petrochemicals Ltd

IWH:

Industrial waste heat

IPCL:

Indian Petrochemical Ltd

MSME:

Micro, small & medium enterprises

NCV:

Net calorific value

ORC:

Organic Rankine cycle

OFC:

Organic flash cycles

PAT:

Perform achieve and trade

RPM:

Revolutions per minute

RIL:

Reliance industries

SEC:

Specific energy consumption

SIPP:

Static investment payback period

TPA:

Tonnes per annum

TPD:

Tonne per day

WHRB:

Waste heat recovery boilers

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Acknowledgements

The authors would like to acknowledge the support and technical inputs regarding exergy analysis from Prof. Parthasarathi Ghosh of Process Equipment and Design laboratory of Cryogenic Engineering Centre, IIT Kharagpur, India.

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Correspondence to Basab Chakraborty.

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Saha, B.K., Chakraborty, B. & Dutta, R. Estimation of waste heat and its recovery potential from energy-intensive industries. Clean Techn Environ Policy 22, 1795–1814 (2020). https://doi.org/10.1007/s10098-020-01919-7

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  • DOI: https://doi.org/10.1007/s10098-020-01919-7

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