Energy Efficiency Unleashed: How We Saved 1 Lakh Units of Electricity at IT Office Building, Chennai

 
 

ENERGY SAVINGS THROUGH THIRD PARTY COMMISSIONING

Project Brief:
This is a commercial facility housing software companies in OMR, Chennai. This facility consists of two basements, a ground, and eleven floors. The total built-up area is around 6.5 lakh sq. ft and the total air-conditioning area is around 5.5 lakh ft2. The basements are housing utilities and also serve as a car park. The ground and first floor are being used as a car park.

Highlights:

1) During LEED commissioning, it was found that the temperature difference between the inlet and outlet condenser water temperature was around 6.5 to 7deg C instead of 5 deg C and the condenser flow was around 20-25% lower than the design one.

2) Due to this difference between the design and actual values of the condenser water flow, chillers were operated at around 10-15% higher energy consumption compared to the design.

3) The project team resolved this flow difference by resetting the cooling water line balancing valve’s position after the re-TAB exercise across the condenser water circuit. Again the functional performance test was carried out on the chillers at various loads and confirmed that they were ok. This helped the project to improve the energy performance of the HVAC system and reduce the energy consumption of chillers.

4) After Conserve’s Root Cause Analysis revealed that the condenser water flows across the chillers were lower compared to the design values, the identified issue was resolved by the Projects & O&M Team.

Benefits:
– This exercise saved around 1 lakh units of electricity and approx. 10 lakhs INR on an annual basis.

– In terms of investment, it was only the re-TAB across the condenser water circuit of roughly Rs. 0.5 lakh. Third Party Commissioning along with the Root cause analysis (which was already budgeted) was paid back in a month.

– An in-efficiency identified at the time of the project’s commissioning phase has reduced the Energy Performance Index (EPI) of the project, which is going to be the basic scorecard for the facility.

At Conserve Consultants, we are committed to driving energy efficiency and sustainability in every project we undertake. For inquiries, please contact us at info@conserveconsultants.com or reach us on WhatsApp at +9190030 97071. You can also visit our website at https://lnkd.in/dThYxcG2.

U.S. Green Building Council Vijaya Kumar Serma Durai Prabhavathi Parameswaran Aninda Basu Kapil Jaiswal
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