Case Study

BCA/Keppel Land Test Bedding Joint Project (Super Low Energy Building)

  • Year:2018-2020
  • Client:Keppel Bay Tower
  • Application:Commercial Building HVAC
  • Location: Keppel Bay Tower, Singapore

Test Outcomes

  • 7% Chiller Energy Savings
  • 81% Blow down water reduction
  • Chemicals not required
  • Auto-tube system disabled
  • Heterotrophic bacteria within limit and no Legionella Bacteria detected

Innovative Polymers Pte Ltd (IP) commissioned the Environmental & Water Technology Centre of Innovation (EWTCOI) to evaluate the performance of the DeCaIon™ (DCI) system when integrated into cooling towers with respect to the energy efficiency of the chiller plant, energy savings and water savings.


DCI is a novel electro-chemical water treatment process developed and patented by IP. DCI is intended to replace both the blowdown and chemical dosing cycles of typical cooling towers as an eco-friendly and chemical-free alternative. IP installed the DCI system at Keppel Bay Towers (KBT) located at 1 Harbourfront Avenue, Singapore, as part of the BCA-Keppel Land Joint Challenge call for test-bedding of sustainable solutions. The Measurement and Verification (M&V) plan for this evaluation is based on the International Performance Measurement and Verification Protocol (IPMVP Volume I – 2014), which is a widely accepted international standard for determining savings from energy conservation measures (ECMs).


Baseline and post-retrofit data was collected from the Chiller Plant Building Management System (BMS) at KBT along with manual meter readings over a 6-month period. While some issues with the condenser water pumps were experienced, eventually these were resolved. Data models produced were found to be statistically valid and met the IPMVP requirements.

DCI System Performance

Bacteria Count Report

Corrosion Coupon Test Data