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Solar Thermal Plant With Heat Recovery To Reduce Energy Consumption Of Continuous Textile Mercerisation Process

Kahwash, Fadi; Majeed, Hammad


Hammad Majeed


The textile industry is resource intensive and environmentally polluting. Textile exporting countries, such as Pakistan and Bangladesh are facing strain on their resources. Woven fabrics, require several chemical treatment processes, which consumes large quantities of hot water and chemicals, in addition to producing toxic wastewater. Mercerisation is a chemical treatment of fabrics before dyeing process; it consumes large quantities of hot water to wash the chemicals from the fabrics. In this work, we attempt to improve the sustainability of energy supply of textile mercerisation process of a textile plant in Pakistan. A solar-assisted thermal plant with waste heat recovery is proposed. Evacuated tube solar collectors combined with sensible heat storage are considered. A detailed thermodynamic modelling and simulation is carried out using TRNSYS software. The simulation results show around 50% reduction in the annual energy consumption. The results also show that heat recovery contributes a larger share of the energy savings, therefore, it is potentially more beneficial in continuous textile plants. Investigation of the effect of solar field size and storage are also carried out. It is found that there is linear dependency between solar share and solar plant size.

Presentation Conference Type Conference Paper (Published)
Conference Name Advances in Renewable and Clean Energy Technologies
Start Date Jun 7, 2022
End Date Jun 10, 2022
Acceptance Date May 31, 2022
Online Publication Date Jun 10, 2022
Publication Date Jun 10, 2022
Deposit Date Jan 19, 2023
Book Title Advances in Renewable and Clean Energy Technologies
Keywords Textile, Solar Thermal Energy, Heat Recovery