New technology to boost energy efficiency of District Cooling Systems

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A new invention that improves the energy efficiency of District Cooling Systems (DCS) has demonstrated that it could improve the energy carrying capacity by up to three times as compared to a conventional chilled water storage system, and yield more than 10% in cost savings annually. The trial, which completed in August 2021, was conducted at one of Keppel Infrastructure’s (KI) district cooling plants in Singapore, located at Changi Business Park.

This Thermal Energy Storage (TES) technology solution uses a new Phase-Change Material (PCM) that can store and release cold energy as it changes between liquid and solid states. The stored cold energy is gradually released in a district cooling plant to mitigate cooling peak loads in commercial buildings. This solution was jointly designed and developed by the National University of Singapore (NUS) and Keppel DHCS Pte Ltd (KDHCS), a wholly-owned subsidiary of KI. The project was funded by the Energy Market…

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