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AC energy consumption’ reduced by 26% with ECOPHIT technology’

Study in Singapore concludes that that air conditioning energy consumption can be reduced by 26% using an ECOPHIT chilled ceiling system instead of a conventional air‐conditioning system.

Furthermore, the study found that total energy savings of 36% could be also achieved when back-end systems are optimised.

The study into the energy use and overall effectiveness of Chilled Ceiling technology was carried out by the Energy Research Institute, Nanyang Technological University, Singapore.

The study’s authors collaborated with the Germany‐based SGL Group to install and operate ECOPHIT chilled ceiling technology at ERI@N’s CleanTech One office space in Singapore.

The Energy Research Institute combined energy modelling simulations, with monitoring and analysis of the real parameters of the installations and verification (through sub‐metering), to show how a chilled ceiling system – a form of radiant cooling – achieves significant energy savings when compared to a conventional air‐based system, while maintaining ideal thermal comfort for the building’s occupants.

Due to the hot and humid weather conditions in Singapore, air conditioning is widely used in buildings.

The high cooling demands, met by conventional air‐conditioning technology, result in very high energy consumption of buildings. Radiant Cooling technology – and more specifically, a chilled ceiling system, presents a more energy efficient alternative.

A chilled ceiling system is a type of low energy‐higher inlet water temperature cooling system that uses radiant cooling to cool a building space. A chilled ceiling is a ‘drop‐down’ ceiling comprising of water carrying pipes embedded in thin, conductive slabs and e.g. mounted on a metal ceiling plate.

Using the ECOPHIT technology, the conductive slabs are made from carbon delivering a very high level of thermal conductivity and control dynamics. This system cools the occupants in the room through radiation and natural convection using the chilled ceiling as a heat sink for the heat load in the building.

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