Green public computer lab using single-board computer and interactive computer reservation system

Public computer lab is very common in college and university. The main cost for maintenance lab is the power cost. In our university, the public computer lab consume more than 40kWh per day. The earlier study found that most cost comes from a major part: Some users don´t shut down the computer after their usage. In this study, we use a low-power single-board computer (Raspberry Pi 2) for interactive kiosk providing computer reservation system and temporary storing the student usage, the VM-Based server providing RESTful web service, and embedded software on the client for shutting down the idled computer. The study found the new reservation system can decrease energy consumption up to 44.32%, lower staff´s maintenance time, fair of sharing limited computer resource, and student usages are record accurately.