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Energy simulation and optimized retrofit practices applied to a real dwelling.

Number: pap. 3583

Author(s) : MARINELLO G., CASKEY S. L., BOWLER E. J., et al.

Summary

Sustainable construction practices have been increasingly applied in new residential construction for years. On the other hand, little has been done to retrofit the massive stock of already existent dwellings in the United States. Nowadays retrofitting practices represent a good monetary investment and reduce the carbon footprint of a building through reduction of energy consumption. The case of a real single family home is taken as an example to demonstrate the advantages of certain retrofitting practices. The analysis is done using software called Building Energy Optimization (BEOpt). Real energy consumption data are compared with the simulation model in order to check the accuracy of the model. As a second step, different retrofit solutions are analyzed in terms of energy savings and an annualized energy cost is used to identify the best solution. The analysis demonstrates that a 50% energy saving can be achieved with an initial investment of approximately $30,000. Considering a period of 30 years, an annualized energy cost savings of 55 $/year with respect to the pre-retrofit case is reached. This study is part of a research program called the ReNEWW (Retrofitted Net-zero Energy, Water and Waste) House. Considering that the final goal of the project is to be net-zero energy, additional calculations have been done to analyze the available renewable energy resources on-site. It is demonstrated that a 11.3 kW solar photovoltaic system coupled with a geothermal heat pump is able to achieve net-zero energy status.

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Format PDF

Pages: 8 p.

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Details

  • Original title: Energy simulation and optimized retrofit practices applied to a real dwelling.
  • Record ID : 30013801
  • Languages: English
  • Subject: Environment
  • Source: 2014 Purdue Conferences. 3rd International High Performance Buildings Conference at Purdue.
  • Publication date: 2014/07/14

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