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TEEHOUSE: Thermal Environmental Engineering Design and Cost Software for a Building

Craig W. Somerton, Laura Genik, Wayne Thelen, Dan Lewis, and Scott Strawn

Michigan State University/University of Portland/Michigan State University

Introduction Computer software has been developed that performs the simple calculations associated with the design and cost analysis for the heating and air conditioning systems for a building. TEEHouse (Thermal Environmental Engineering House) is an interactive DOS program that allows for the optimization of insulation type and thickness, furnace type, and air conditioner type in thermal environmental engineering design. The software is used in senior level thermal design classes at the University of Portland and Michigan State University to teach the basic principles of HVAC design within the context of a realistic problem. The program utilizes weather data, such as daily temperature, relative humidity, wind velocity, and solar condition, for ten different U.S. cities that are used in the heating and cooling load calculations performed by the program. The analysis can be performed for average or extreme temperature conditions for each location. Heating and cooling loads, as well as the design/costing analysis, can be performed on a daily basis or an annual basis. The economic analysis allows for an appropriate selection of insulation type, insulation thickness, furnace type, and air conditioner type to be explored by the students, including the interaction among these selections.

This paper provides a detailed description of the operation of the program, including details of the heating and cooling load calculations and economic analysis. Three different design problem statements are provided that deal with the thermal design of a house, a refrigerated warehouse, and a power plant building. Results of these design studies are provided to demonstrate the utility of the software. Student feedback is provided to assess the program and design experience. Finally, recommendations concerning the use of the program and the design projects are provided.

TEEHouse Program The software TEEHOUS.EXE is an interactive DOS program for the design and cost analysis of the heating and air conditioning systems for a building. It allows for the optimization of insulation type and thickness, furnace type, and air conditioner type. The program may be run from Windows by clicking on the program icon labeled TEEHOUS.

The initial menu requests geographic and other information concerning the building. The building may be specified as either a one story or two story structure. The air change per hour (ACH) is also specified to calculate the infiltration heat transfer. Two design studies are possible: single day analysis for which the user will provide the specific day to carry out the Proceedings of the 2002 American Society for Engineering Education Annual Conference & Exposition Copyright Ó 2002, American Society for Engineering Education

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Genik, L., & Somerton, C. (2002, June), Teehouse: Thermal Environmental Engineering Design And Cost Software For A Building Paper presented at 2002 Annual Conference, Montreal, Canada. 10.18260/1-2--11316