Simulation modeling of a photovoltaic-green roof system for energy cost reduction of a building: Texas case study

Sojung Kim, Burchan Aydin, Sumin Kim

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

This study aims at introducing a modeling and simulation approach for a green roof system which can reduce energy cost of a building exposed to high temperatures throughout the summer season. First, to understand thermal impact of a green roof system on a building surface, a field-based study has been conducted in Commerce, Texas, U.S., where the average maximum temperature in summer is 104 F (40 C). Two types of analyses were conducted: (1) comparison of temperature between different plant type via Analysis of variance (ANOVA) and (2) polynomial regression analysis to develop thermal impact estimation model based on air temperature and presence of a green roof. In addition, an agent-based simulation (ABS) model was developed via AnyLogic® University 8.6.0 simulation software, Chicago, IL, U.S., in order to accurately estimate energy cost and benefits of a building with a photovoltaic-green roof system. The proposed approach was applied to estimate energy reduction cost of the Keith D. McFarland Science Building at Texas A&M University, Commerce, Texas (33.2410 N, 95.9104 W). As a result, the proposed approach was able to save $740,325.44 in energy cost of a heating, ventilation, and air conditioning (HAVC) system in the subject building. The proposed approach will contribute to the implementation of a sustainable building and urban agriculture.

Original languageEnglish
Article number5443
JournalEnergies
Volume14
Issue number17
DOIs
StatePublished - Sep 2021

Keywords

  • Condensate water
  • Green roof
  • Photovoltaic
  • Simulation
  • Sustainability
  • Urban agriculture

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