How district cooling can ease India’s climate and urban planning troubles, Pg9

Key Highlights:

• District cooling is emerging as a solution to manage rising cooling demands in India's urban areas, driven by increasing temperatures and heatwaves.
• This centralized system supplies air-conditioning to multiple buildings, enhancing energy efficiency and reducing electricity consumption.
• District cooling can cut electricity use for cooling by 30-50% and reduce peak demand on the grid by 20-30%.
• It supports India’s National Cooling Action Plan by lowering emissions and improving energy security.
• GIFT City in Gujarat has demonstrated district cooling, potentially reducing power demand by around 6,100 MW.

Detailed Insights:

• District cooling systems utilize a central plant to produce chilled water, which is then distributed to buildings through insulated pipes, reducing the need for individual cooling units.
• These systems are more efficient due to the use of large, high-efficiency chillers and cooling towers, often incorporating thermal storage to shift cooling production to nighttime when demand is lower.
• Environmental benefits include a 15-40% reduction in greenhouse gas emissions and up to an 80% reduction in refrigerant volumes, mitigating the urban heat-island effect.
• District cooling is most suitable for areas with high, dense, and predictable cooling demands such as commercial districts, airports, hospitals, universities, and IT parks.
• For customers, district cooling can cut operating costs by about 20-40% and save developers 5-10% of project cost by eliminating the need for individual cooling infrastructure.
• Implementing district cooling requires coordinated efforts from urban authorities, municipal bodies, state electricity regulators, and developers to establish clear guidelines and frameworks.

Key Concepts Involved:

• District Cooling: A centralized system providing air-conditioning to multiple buildings from a central plant.
• Thermal Storage: Storing energy in the form of heat or cold for later use, often to shift energy demand to off-peak hours.
• Urban Heat-Island Effect: The phenomenon where urban areas experience higher temperatures than surrounding rural areas due to human activities and infrastructure.