Energy Transition Services

Low Delta-T Rehabilitation Assessment & Execution Management

Rehabilitate your existing facilities & ensure that your current assets are functioning optimally & that you are getting your money’s worth

Low Delta – T

District cooling is a system that distributes cooling capacity in the form of chilled water or other medium from a central source to multiple buildings through a network of underground pipes for use in space & process cooling. It is an environmentally friendly, energy saving and economical cooling method. The cooling is centrally produced and distributed as cold water to each building through a closed distribution net.​

  • 9°C

    minimum recommended chilled water temperature difference at the demand side
  • 45%

    increase in chiller plant energy consumption due to Low Delta-T Syndrome
What is Low Delta-T Syndrome?

Low Delta-T Syndrome is a condition whereby the temperature difference becomes lower than 9 Degrees Celsius, leading to disadvantages on the building and district cooling plant

Causes of Low Delta-T syndrome
  • Design
    Improper selection of HVAC equipment and control valves
  • Operation
    Improper setpoints and operating procedures
  • Maintenance
    Faulty sensors, fouled heat exchangers, and lack of chemical dosing
Impact of low Delta-T on Buildings
  • Increase in Delta-T surcharges
  • Decrease comfort levels among tenants
  • Increase energy consumption by pumps
Data gathering and preliminary assessment
Data gathering and preliminary assessment
Detailed site analysis, metering, measurements and experimentation
Recommendation roadmap
Implementation Supervision
Control Delta-T management

Upon project completion, buildings shall witness considerable O&M costs, eliminated Delta-T surcharges, and improved comfort levels among tenants. Amongst other aspects, the following would be guaranteed benefits in dealing with the Low-Delta T Syndrome

Reduce Delta-T surcharges by 90-100% for buildings connected to District Cooling Plants
Immediate detection of faulty HVAC systems within the tenant spaces and take remedial actions
Provide 3rd party financing with risk-free performance-based repayment through shared savings
Improve comfort levels for occupants through a more balanced chilled water network
Ensure highest standards of equipment through data monitoring and healthy O&M practices
Reduce CO2 emissions through a lower chiller and pump consumption

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