Tech Bundle

CoolestSG

Cooling Energy Science & Technology Singapore

CoolestSG offers a platform for industry partners and research performers to interact and work together to identify relevant topics, gain insights into Singapore’s future cooling needs, as well as develop innovative solutions that meet the needs of the industry.  Companies that join the consortium will get to test their technologies at the facilities of research institutes and government agencies here, such as the Building and Construction Authority’s (BCA) SkyLab.  The consortium will also be working with government agencies to achieve national sustainability goals for energy efficient cooling, including BCA’s Super Low Energy Buildings Technology Roadmap, and the Infocomm Media Development Authority’s (IMDA) Green Data Centre Technology Roadmap.

A Scalable and Adaptive Model-Predictive Distributed Control of Building HVAC Systems
This technology offers a novel model-predictive distributed control method and a flexible and cost effective IoT implementation architecture for energy saving in building HVAC systems. It is scalable and real-time optimally responsive to changes in a large building that has more than 500 zones via a patented token-based HVAC scheduling strategy. The larger the building, the higher the energy saving potential, due to its novel coordinated HVAC scheduling approach. It is autonomously adaptive to the building operational environment via effective system identification techniques, including machine learning techniques, on real-time data attainable from the proposed IoT infrastructure. It is also occupant-centric, i.e., capable of learning and addressing individual human comfort requirements. The technology is applicable to any new or old VAV (or VRV) HVAC system without any need of major retrofitting on existing HVAC controllers and data acquisition systems, due to its highly flexible plug-and-play implementation architecture. It can also be used to convert an old HVAC system into a highly automated and intelligent one, allowing a building owner to check remotely, via commonly used mobile devices, the status of the building HVAC system and initiate supervisory control for better performance, thus, can enhance the effectiveness of existing BMS and building automation. The technology provider is seeking for industry partners to commercialise the technology.          
An Energy Efficient Dehumidification System for Air Conditioning Application
In warm and humid climates such as Singapore, air conditioning systems are installed in most buildings for moisture removal from the air and lowering air temperature. This method is energy inefficient as significant amount of energy is required to remove latent heat from the moist air. Furthermore, the cooled and dehumidified air may need to be reheated to the suitable temperature level before it is used especially in specific applications such as cleanrooms. The technology described herein combines membrane filtration and desiccant adsorption mechanisms to achieve the objective of moisture removal at lower energy consumption. Hence, dehumidified air can be directly cooled to the desired temperature.The membrane, comprising thin layers of nano-wires construct, is permeable to moisture but not to air. It enables removal of water selectively and efficiently (at high flux). In addition, the membrane can also be combined with photocatalytic materials to provide disinfection functions. The hybrid mechanism, combining the dehumidification capabilities of both technologies, improves air dehumidification efficiency by up to 85% when compared with silica gel desiccant approach.