In a historic building with inadequate or no air conditioning or where it is not possible to install modern systems fitted with air filters, humidification, and controls, it is possible to mitigate the effects of temperature and humidity extremes on a building and its contents by controlling air-flow. When used in conjunction with mechanical air conditioning, this method can also save a little ...

We introduce and provide results from a rigorous, scientific testing methodology that allows pure building model calibration systems to be compared fairly to traditional output error (e.g. how well does simulation output match utility bills?) as well as input-side error (e.g. how well, variable-by-variable, did the calibration capture the true building's description?). This system is then used ...

This article focuses on adopting effective and affordable bioclimatic building design strategies in Ouagadougou, the Sudano-Sahelian zone of Burkina Faso. A model representing a standard office relevant parameters were input EnergyPlus, scenarios analyzed to evaluate effect natural ventilation, window shading, dehumidification with night evaporative cooling ventilation thermal comfort energy co...

This paper predicts the reductions in the indoor mass concentrations of particles attainable from use of filters in building supply airstreams and also from use of stand-alone fan-filter units. Filters with a wide efficiency range are considered. Predicted concentration reductions are provided for indoor-generated particles containing dust-mite and cat allergen, for environmental tobacco smoke ...

This paper uses a model, and data on particle size distributions, filter efficiencies, and particle deposition rates to estimate the reductions in the indoor mass concentrations of particles attainable from use of filters in HVAC supply airstreams. Additionally, the energy and total costs of the filtration options are estimated. Predicted reductions in cat and dust-mite allergen concentrations ...

1569-190X/$ see front matter 2009 Elsevier B.V doi:10.1016/j.simpat.2009.09.009 * Corresponding author. Tel.: +82 2 3408 4037; fa E-mail address: [email protected] (J.-W. Jeong The objective of this paper was to find an effective way of improving demand-controlled ventilation (DCV) simulation performed under an occupant based ventilation standard established in many countries. Two attractive ...

1 “Hot air rises!” This introductory sentence to Design Guide 1 states the obvious. But why does it sometimes rise and stay within the hood envelope and other times fill the kitchen with smoke, grease, and heat? Recent research sponsored by the American Society of Heating, Refrigeration, and Air-conditioning Engineers (ASHRAE) provided intriguing insights into this question. In addition to the ...

COVID-19 caused by severe acute respiratory syndrome (SARS) has accounted for huge collateral damage and as the virus is spreading faster this study deals with isolation rooms or negative pressure 12 more air changes per hour maintaining a difference of 2.5 pa which can help in reducing transmission from affected to not persons. ANSI/ASHRAE/ASHE Standard 170–2008 recommendations are followed ho...