Impact of shade on HVAC energy consumption in buildings: A residential case study

Justin Shultz, Lucas Witmer, Jeffrey Brownson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The impact of shade on the heating, ventilation, and air conditioning (HVAC) energy consumption in buildings is not automatically included in whole building energy simulations. Using transient system simulation (TRNSYS) software, models of the Union County Housing Authority's energy efficient duplex enable the calculation of a monetary value for shading from trees, adjacent buildings, or shade structures such as solar panels. The value for shade was determined by calculating the difference in shaded versus unshaded energy consumption of the building for the month of July in central Pennsylvania. During the month of July, it was found that a large tree located to the south of the building could save approximately 4.7% in cooling demand and 3.3% on the electricity bill for the duplex. This value for tree shade is conservative because the detailed radiation mode in TRNSYS does not discount irradiation from shade projected on exterior surfaces other than windows. Solar panels shade the building's roof, reducing the cooling demand by 0.57% and the electricity bill by 0.4% from the shade alone.

Original languageEnglish (US)
Title of host publicationWorld Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conference
Pages4074-4081
Number of pages8
Volume6
StatePublished - 2012
EventWorld Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conference - Denver, CO, United States
Duration: May 13 2012May 17 2012

Other

OtherWorld Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conference
CountryUnited States
CityDenver, CO
Period5/13/125/17/12

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Fingerprint Dive into the research topics of 'Impact of shade on HVAC energy consumption in buildings: A residential case study'. Together they form a unique fingerprint.

Cite this