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Cloud Data Centers and Cost Modeling by Rajkumar Buyya, Caesar Wu

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Chapter 7

Data Center Cooling

This chapter introduces some basic concepts of thermodynamics and discusses cooling load and data center cooling components, namely CRAC units, CRAH units, chillers, and humidifiers. In order to save on both capex and opex, this chapter also discusses the topic of cooling control and temperature management along with five different technical options.

Keywords

Cooling; comfort cooling; precision cooling; heat; temperature; humidity; psychometric chart; refrigeration cycle; airflow; fan; computer room air condition (CRAC) unit; computer room air handling (CRAH) unit; chiller; dehumidifier

Cooling is one of the three major concerns for a data center. As this is a major topic, we cover it over three chapters. This chapter ...

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