This paper deals with 3D visualization and interaction techniques used to analyze data necessary to manage energy consumption. Data comes from sensors located in a green data center in the IBM Montpellier (France) site. The main goal of this work is to visualize, in real-time, the large amount of data produced by different sensors in the data center. A visualization engine has been developed to understand the data extracted from sensors. This engine is based on a particle system which allows representation of the room's interior. Data centers are large warehouse servers, which represent a gap in building's energy consumption. In this paper we present a visual method developed to improve energy management of data center by supporting IT architects activities. Our system use sensors to monitor data center, and allows visualizing temperature air flow. We use 3D models and several multiresolution visualization methods to allow our system to be deployed in different devices.