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The development of the world internet usage continues to increase from time to time. It is recorded that 46% of the worlds population has become internet users and generates data traffic of 8 zettabytes every day. This increase has triggered the growth of data center infrastructure as processing, storage and communication system in the digital world. The data center itself has contributed 1.5% of total world electricity consumption and is expected to continue to increase. With the proportion of energy use in the data center, it covers 52% of electrical energy for information technology (IT) equipment, 38% for cooling and 10% for supporting equipment. One of the problems faced by data centers is the cooling of information technology (IT) components that are relatively large in energy, this has been a separate concern in several years of research. This paper describes cooling models that have the potential to improve the efficiency of using energy data centers. There have been many studies using several methods in order to find the most effective way to transfer heat data centers, one of them using the immersion cooling method. Immersion cooling promises energy efficiency improvements in the data center, using dielectric fluids that have high heat capacity. Several types of fluids and immersion cooling methods are identified and discussed in this paper.