Cargando…
A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies
Radiant cooling-assisted natural ventilation is an innovative technical approach that combines new radiant cooling technology with natural ventilation to increase fresh air delivery into buildings year-round with minimal energy cost and improvment of air quality. Currently, the standard paradigm for...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Ltd.
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7983460/ https://www.ncbi.nlm.nih.gov/pubmed/33776191 http://dx.doi.org/10.1016/j.apenergy.2021.116848 |
_version_ | 1783667911633666048 |
---|---|
author | Aviv, Dorit Chen, Kian Wee Teitelbaum, Eric Sheppard, Denon Pantelic, Jovan Rysanek, Adam Meggers, Forrest |
author_facet | Aviv, Dorit Chen, Kian Wee Teitelbaum, Eric Sheppard, Denon Pantelic, Jovan Rysanek, Adam Meggers, Forrest |
author_sort | Aviv, Dorit |
collection | PubMed |
description | Radiant cooling-assisted natural ventilation is an innovative technical approach that combines new radiant cooling technology with natural ventilation to increase fresh air delivery into buildings year-round with minimal energy cost and improvment of air quality. Currently, the standard paradigm for HVAC (heating, ventilation and air conditioning) is based on central air systems that tie the delivery of heating and cooling to the delivery of fresh air. To prevent heat loss, the delivery of fresh air must be tightly controlled and is often limited through recirculation of already heated or cooled air. Buildings are designed with airtight envelopes, which do not allow for natural ventilation, and depend on energy-intensive central-air systems. As closed environments, buildings have become sites of rapid COVID-19 transmission. In this research, we demonstrate the energy cost of increasing outdoor air supply with standard systems per COVID-19 recommendations and introduce an alternative HVAC paradigm that maximizes the decoupling of ventilation and thermal control. We first consider a novel analysis of the energy costs of increasing the amount of conditioned fresh air using standard HVAC systems to address COVID-19 concerns. We then present an alternative that includes a novel membrane-assisted radiant system we have studied for cooling in humid climates, in place of an air conditioning system. The proposed system can work in conjunction with natural ventilation and thus decreases the risk of indoor spread of infectious diseases and significantly lowers energy consumption in buildings. Our results for modeling HVAC energy in different climates show that increasing outdoor air in standard systems can double cooling costs, while increasing natural ventilation with radiant systems can halve costs. More specifically, it is possible to add up to 100 days’ worth of natural ventilation while saving energy when coupling natural ventilation and radiant systems. This combination decreases energy costs by 10–45% in 60 major cities globally, while increasing fresh air intake. |
format | Online Article Text |
id | pubmed-7983460 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Elsevier Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-79834602021-03-23 A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies Aviv, Dorit Chen, Kian Wee Teitelbaum, Eric Sheppard, Denon Pantelic, Jovan Rysanek, Adam Meggers, Forrest Appl Energy Article Radiant cooling-assisted natural ventilation is an innovative technical approach that combines new radiant cooling technology with natural ventilation to increase fresh air delivery into buildings year-round with minimal energy cost and improvment of air quality. Currently, the standard paradigm for HVAC (heating, ventilation and air conditioning) is based on central air systems that tie the delivery of heating and cooling to the delivery of fresh air. To prevent heat loss, the delivery of fresh air must be tightly controlled and is often limited through recirculation of already heated or cooled air. Buildings are designed with airtight envelopes, which do not allow for natural ventilation, and depend on energy-intensive central-air systems. As closed environments, buildings have become sites of rapid COVID-19 transmission. In this research, we demonstrate the energy cost of increasing outdoor air supply with standard systems per COVID-19 recommendations and introduce an alternative HVAC paradigm that maximizes the decoupling of ventilation and thermal control. We first consider a novel analysis of the energy costs of increasing the amount of conditioned fresh air using standard HVAC systems to address COVID-19 concerns. We then present an alternative that includes a novel membrane-assisted radiant system we have studied for cooling in humid climates, in place of an air conditioning system. The proposed system can work in conjunction with natural ventilation and thus decreases the risk of indoor spread of infectious diseases and significantly lowers energy consumption in buildings. Our results for modeling HVAC energy in different climates show that increasing outdoor air in standard systems can double cooling costs, while increasing natural ventilation with radiant systems can halve costs. More specifically, it is possible to add up to 100 days’ worth of natural ventilation while saving energy when coupling natural ventilation and radiant systems. This combination decreases energy costs by 10–45% in 60 major cities globally, while increasing fresh air intake. Elsevier Ltd. 2021-06-15 2021-03-22 /pmc/articles/PMC7983460/ /pubmed/33776191 http://dx.doi.org/10.1016/j.apenergy.2021.116848 Text en © 2021 Elsevier Ltd. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. |
spellingShingle | Article Aviv, Dorit Chen, Kian Wee Teitelbaum, Eric Sheppard, Denon Pantelic, Jovan Rysanek, Adam Meggers, Forrest A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title | A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title_full | A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title_fullStr | A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title_full_unstemmed | A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title_short | A fresh (air) look at ventilation for COVID-19: Estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
title_sort | fresh (air) look at ventilation for covid-19: estimating the global energy savings potential of coupling natural ventilation with novel radiant cooling strategies |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7983460/ https://www.ncbi.nlm.nih.gov/pubmed/33776191 http://dx.doi.org/10.1016/j.apenergy.2021.116848 |
work_keys_str_mv | AT avivdorit afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT chenkianwee afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT teitelbaumeric afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT shepparddenon afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT pantelicjovan afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT rysanekadam afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT meggersforrest afreshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT avivdorit freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT chenkianwee freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT teitelbaumeric freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT shepparddenon freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT pantelicjovan freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT rysanekadam freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies AT meggersforrest freshairlookatventilationforcovid19estimatingtheglobalenergysavingspotentialofcouplingnaturalventilationwithnovelradiantcoolingstrategies |