Johnson Controls
Summary
Driven by regulation, cost pressures and resource constraints, today’s operators are regularly being tasked to do more with less. In a reality where only 35-50% of the input fuel is converted into electricity, and the rest is released into the atmosphere, there is a massive opportunity for operators to take advantage and find better and more strategic ways to utilize waste heat.
That’s where absorption chillers and the technology behind them enter the picture.
In the European Union, heat export mandates are beginning to require waste heat reuse, and this shift is already leading to projects where the warmth from servers is piped into district heating grids. Even in regions without such requirements, the economic and environmental benefits are prompting wider adoption – especially in situations where grid electricity is constrained or water is scarce.
This has brought attention to absorption chillers and the technology behind them.
“Absorption chillers can be driven by waste heat from combined heat and power (CHP) systems, providing beneficial cooling to the data centers,” says Rajesh Dixit, Senior Director, Global Product Management, Building Technologies & Solutions, Johnson Controls. “The heat of rejection from the absorption cycle can be rejected to dry coolers, which means no water loss. In a futuristic scenario, absorption heat pumps may be serving the cooling needs of the data center, and the heat of rejection of the cycle can be used for beneficial heating purposes.”
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