The demand for more data centers is rapidly growing throughout the world to accommodate the explosion of digital content, big data, e-commerce, and internet traffic. This trend makes the data center sector one of the fastest- growing consumers of electricity in the world. As a result, the data center sector has a fast-growing carbon footprint, and is one of the major sources of CO2 emission. According to Natural Resource Defense Council, by 2014, data centers are adversely affecting the environment by releasing 200 million metric tons of CO2 every year. And the number continues to go up with time. Reducing the data center energy consumption is one of the effective efforts to address the climate change, a key challenge facing humankind.
The cooling system in our research uses the underground as the heat sink, and the transfer of the data center heat relies on airflow and water circulation without air conditioning. The cooling features low carbon emission due to low power consumption, and low and steady heat sink temperature. The research results will be transferred to build data centers with green cooling.
Geothermal cooling for data center:
Heat exchange inside data center:

