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Enhancing Indoor Air Quality for Residential Building in Hot-Arid Regions

  • Ghanim Kadhem Abdul Sada
  • Tawfeeq Wasmi M. Salih
Chapter
Part of the Innovative Renewable Energy book series (INREE)

Abstract

Indoor air quality (IAQ) in the building depends mainly upon the level of temperature and humidity, where it is an indication of the comfort and health of occupants. The enhancement of indoor air needs to take care of both internal and external conditions. The internal conditions required to control the variation of room temperature and humidity as well as the discomfort sources like kitchen, laundry, and bathroom. The external conditions required to reduce the climatic effects upon buildings. In this study, a test model has built in order to apply some important passive techniques including insulating materials, airtightness, and air ventilation system. The experimental work includes the improving of indoor air quality by source control, suitable filtration, and the use of ventilation system. This study gives good indication to the benefit of using the passive house criteria in hot-arid regions like Iraq where there are high level of solar radiation and large fluctuations of air temperature. The results in summer time show that the indoor temperature could be reduced to 31 °C instead of 42 °C for conventional house. In Iraq, due to low ambient humidity in summer, about 15–40%, there is no need to the dehumidification process. However, measurements show stability in the fluctuations of relative humidity in the passive model compared to that measured in the traditional one, where the indoor relative humidity was maintained less than 37%. Furthermore, a local simulation program is used to calculate the energy consumption and the greenhouse gas effect. The results show that energy consumption could be saved up to 80%. The fuel consumption that is used in the power plant to produce electricity for cooling could be saved from 32 L/m2 for traditional house to 3 L/m2 for passive house which means reducing by 29 L/m2. The corresponding CO2 emission is saved from 85 kg/m2 for traditional house to 11 kg/m2 for passive house which means reducing by 74 kg/m2 or 87%.

Keywords

Indoor air quality Passive system Temperature Humidity Cooling 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Ghanim Kadhem Abdul Sada
    • 1
  • Tawfeeq Wasmi M. Salih
    • 2
  1. 1.Mechanical Engineering Department/Al Mustansiriyah UniversityBaghdadIraq
  2. 2.Materials Engineering Department/Al Mustansiriyah UniversityBaghdadIraq

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