lec10 - MIT OpenCourseWare http:/ocw.mit.edu 1.020 Ecology...

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MIT OpenCourseWare http://ocw.mit.edu 1 .020 Ecology II: Engineering for Sustainability Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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Lectures 08_10 Outline: Radiative Energy Transfer, Building Energy Motivation/Objective Extend house energy model to account for radiation to and from roof. Review effect of building materials on energy loss. Approach 1. Revise system definition to include two parts: 1) interior house space, walls, floor and 2) roof. Identify unknowns (interior temperature and roof temperature ). i T r T 2. Write coupled energy balance equations (rate form) for interior and roof 3. Relate terms in the energy balance eqs to unknown interior and roof temperatures and other inputs. 4. Specify heat capacities, thermal resistances, meteorological inputs, etc, solve energy balance eqs. for unknown interior and roof temperatures (MATLAB) 5. Compute heat loss, examine impact of building material properties Concepts and Definitions Needed:
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This note was uploaded on 11/29/2011 for the course CIVIL 1.018j taught by Professor Markusbuehler during the Fall '08 term at MIT.

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lec10 - MIT OpenCourseWare http:/ocw.mit.edu 1.020 Ecology...

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