Steam Loss in Miami University's Piping System
The Physical Facilities department at Miami University has observed a monthly loss of 12-15 million pounds of steam, which translates into a $65,000 loss per month, in the 7.7 mile on-campus steam piping system. The objective for this project is to perform testing and cost analysis of proposed solution ideas to make influential recommendations to reduce Miami’s steam loss by 15%. The customer is represented by Mr. Anthony Ferraro, an energy management engineer for the Physical Facilities. Early in the project the team went through a quick course in heat transfer, decided upon solution ideas to analyze, and performed an energy loss analysis of tunnel piping to compare to calculations done by ThermalTech, an engineering firm hired by Miami in 2010. This report is primarily an explanation of the testing and conclusions the team has accomplished since the end of MME 448. In MME 449, the team tested the effects of adding several types of insulation, performed heat loss calculations to analyze the buried pipe, and looked into the consolidation of steam usage in the summer months. The team’s recommendations to the university encourage better communication between the Physical Facilities department and the Office of Housing and Dining in regards to summer programming for potential savings. The complexity of the buried pipe led to the development of a 2-D representation of one specific location of buried pipe using COMSOL Multiphysics 4.1. After making several assumptions, the resulting model provides the framework for future analysis of the buried lines throughout campus. The team tested three different types of insulations at three different locations throughout campus, and found significant energy savings with a particular insulation. The team concludes by proposing a plan that could show 17% energy savings or $134,000 annually, in the steam piping system.
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