I&T Solution

Reference No.

S-0443

Solution Name

Exergenics

Solution Description

-Problem/Challenge:


The chilled water plant generally consists of 10 - 30 pieces of equipment, all working together to deliver chilled water throughout a commercial building for cooling in the air conditioning system.

This single system is very energy intensive and will typically account for roughly 25% of a commercial building's total electricity consumption. Each piece of equipment in the system has varying efficiencies based on a number of factors, as well as interdependencies with other equipment within the system, making it very challenging for humans to optimise.


Sub-optimal operation of these systems leads to higher energy costs, a larger carbon footprint, and shorter equipment lifespan.



-Solution:

Exergenics is the world's first cloud-based tool that can determine the operational efficiency or equipment and the broader central chilled water plant system, then use AI to produce easy to implement controls recommendations to improve both efficiency and performance.

In 3 simple steps, Exergenics could be deployed seamlessly without any capital expenditures (CAPEX), additional hardware or new technicians.

1- Model Chilled Water Plant & Generate Control Strategy

Historical data (From Building Management System (BMS), or Datalake) is fed to our cloud and used to model the building's chiller plants, running the models through our optimisation engine to produce the optimal chiller control strategy.

2- Control Strategy Implementation

Exergenics' optimised control strategy is sent in a simple format to the building's incumbent BMS contractor for implementation on the existing BMS, as opposed to putting more unnecessary hardware on top of the system.

3- Measurement & Verification

Results are measured and verified savings against the pre-optimisation baseline to enhance the control strategy and drive further efficiencies.


-Effectiveness:

Our most recent case study results came from our paid pilot with a university in Melbourne, where our control strategy recommendations achieve great efficiencies in the building of the university.


Upon initial simulation of the Exergenics control strategy, a 5.5% reduction in chiller plant energy consumption was estimated. After the strategy was implemented, the actual energy savings recorded were 6.32%, equivalent to 41,763 kWh and 40 tons CO2 emission.

Application Areas

City Management

Environment

Smart buildings & Facilities Management

Technologies Used

Artificial Intelligence (AI)

Cloud Computing

Data Analytics

Deep Learning

Machine Learning

Predictive Analytics

Use Case

Given that buildings account for 90% of Hong Kong's electricity usage, and 60% of carbon emissions, increasing energy efficiency in buildings has been highlighted as a key priority in Hong Kong’s Climate Action Plan 2030+.


Exergenics’ technology presents an opportunity to reduce the energy consumption of the most energy intensive component in large buildings by optimising the chiller plant.


Since our technology is a software only cloud-based solution that relies on digital modelling, it is highly scalable and easy to implement, and leverages existing building data infrastructure, enabling private or public asset managers to reduce energy consumption and carbon emissions across their building portfolios.


Our solution is much more affordable than traditional human-driven optimisation processes that might require additional hardware to implement.


Exergenics enables its clients to reduce energy consumption and carbon footprint in buildings, while enhancing chiller plant performance.

Our cloud-based AI engine enables us to achieve the aforementioned seamlessly, and effectively.

1) Implementation without additional hardware, modelling conducted remotely and no requirement for new technicians to manage the additional hardware.

2) Transparency of control strategy, allows the strategy to be viewed by and agreed upon by the existing contractors on-site, notably the mechanical engineer, BMS vendor and the facilities manager.

3) Simulation of energy savings prior to commissioning, allows the key decision makers insight into the ROI of the project before going ahead with deployment of the strategy.

4) No CAPEX for installation, allowing building owners to save on operating expenses (OPEX) without the need for CAPEX, a rare and attractive prospect for asset owners.

5) Total time to implement less than one month, drastically reducing the time requirement for solutions to be deployed and energy savings to be realised.


If any government department would like to conduct PoC trial or technology testing on the I&T solution, please contact Smart LAB.