@article{35310,
  keywords = {extreme heat, Anthropogenic heating, Urban micro-climate, Building heat waste, Decomposed anthropogenic heating},
  author = {Pouya Vahmani and Xuan Luo and Andrew Jones and Tianzhen Hong},
  title = {Anthropogenic heating of the urban environment: An investigation of feedback dynamics between urban micro-climate and decomposed anthropogenic heating from buildings},
  abstract = {<p><span><span>Cities consume 2/3 of global energy and consequently release a large amount of&nbsp;<a class="topic-link" title="Learn more about anthropogenic heat from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/engineering/anthropogenic-heat">anthropogenic heat</a>&nbsp;into urban environments, which are already vulnerable to extreme heat risk due to the compounding effects of urban&nbsp;</span><a class="topic-link" title="Learn more about heat island from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/urban-heat-island-effect">heat island</a>&nbsp;and the warming climate. In this study, we use detailed process-based building energy modeling of over 1.1 million buildings in Los Angeles along with a high-resolution urban micro-climate modeling framework to assess the implications of anthropogenic heating for urban micro-climate dynamics and the feedback process between them. We uniquely distinguish between two major components of anthropogenic heating from HVAC system rejections and exhaust/relief air from buildings. We show that the less-studied anthropogenic heating from building exhaust, compared to that from HVAC systems, is mostly a nocturnal phenomenon with more significant implications for local air temperature due to the lower and more stable&nbsp;</span><a class="topic-link" title="Learn more about planetary boundary layer from ScienceDirect's AI-generated Topic Pages" href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/planetary-boundary-layer">planetary boundary layer</a><span>&nbsp;at night. We demonstrate that anthropogenic heating from HVAC rejection and building exhaust not only have reverse diurnal profiles, they also exhibit offsetting behaviors under increasing outdoor temperatures. Our results show that a detailed understanding of the composition of anthropogenic heating, specific to an urban environment, is required to predict its' diurnal dynamics and its’ response to a warming climate.</span></p>},
  year = {2022},
  journal = {Building and Environment},
  volume = {213},
  pages = {108841},
  month = {04/2022},
  issn = {03601323},
  url = {https://linkinghub.elsevier.com/retrieve/pii/S0360132322000889},
  doi = {10.1016/j.buildenv.2022.108841},
  language = {eng},
}