The Application of Pinch Technology to a Novel Closed-Loop Spray Drying System with a Condenser and Reheater
Zexin Lei, Thomas O’Neill, Timothy Langrish
TL;DR
This paper explores using pinch technology in a closed-loop spray drying system to significantly improve energy efficiency and reduce environmental impact.
Contribution
The study introduces a novel closed-loop spray drying system with an air reheater that achieves substantial energy savings.
Findings
The system achieved a very low approach temperature of 3.48 K.
Heat-recovery components reduced external heating demand by up to 30%.
The system offers a scalable solution for energy efficiency in industrial applications.
Abstract
Spray drying is an energy-intensive process in industrial use, making energy recovery a critical focus for improving overall efficiency. This study investigates the potential of integrating heat-recovery systems, including an innovative air reheater, into a closed-loop spray-drying unit to maximise energy savings. Through detailed pinch analysis, the system achieved a very low approach temperature, averaging 3.48 K, which is significantly lower than that of conventional open-loop systems. The study quantifies the energy-recovery potential by demonstrating that the integration of heat-recovery components can reduce the external heating demand by up to 30%. This not only enhances heat-transfer efficiency but also lowers operational costs and reduces the system’s environmental impact. The results suggest that closed-loop systems with air reheaters offer a scalable solution for improving…
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Taxonomy
TopicsHeat Transfer and Optimization · Refrigeration and Air Conditioning Technologies · Adsorption and Cooling Systems