Indoor Air Quality of Historic Buildings: A Comparison of Certified to Non-certified Buildings
Jacqueline Furcha Stephens,
Farah Abaza
Issue:
Volume 9, Issue 4, December 2021
Pages:
91-95
Received:
3 July 2021
Accepted:
26 September 2021
Published:
12 October 2021
Abstract: Since, there is a high level of concern for historic buildings becoming sustainable this paper will investigate the indoor air quality of three historical buildings that are on the National Registry of Historic Buildings and located around Fulton County, Georgia, USA and three historical buildings that are not certified in the same area. The certification for the three certified buildings was obtained thru Earth Craft Sustainable Preservation program, which is the only historic building certification in the United States. The research entails field measurements of CO2 levels, air borne particles (both types and sizes), and greenhouse gas emissions. This was done by counting the airborne particles with sizes between 0.3 to 5.0 nanometers, and identifying biological and non-biological airborne particles both indoors and outdoors. These tests were used to determine if the interior of the certified buildings have better CO2 levels than the exterior and to ascertain how much the certification process effects the indoor air quality. This information will be compared to the noncertified buildings to ascertain if the results of the testing will show that the indoor air quality and greenhouse gases are better than the noncertified buildings. This research will demonstrate the need for improved indoor air quality testing in historic buildings before certifying them as being sustainable in the area of indoor air quality.
Abstract: Since, there is a high level of concern for historic buildings becoming sustainable this paper will investigate the indoor air quality of three historical buildings that are on the National Registry of Historic Buildings and located around Fulton County, Georgia, USA and three historical buildings that are not certified in the same area. The certif...
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Experimental Study of the Annual Operation of an Air-soil Heat Exchanger in Ouagadougou
Boureima Kaboré,
Germain Wende Pouiré Ouedraogo,
Boukaré Ouedraogo,
Sié Kam,
Dieudonné Joseph Bathiebo
Issue:
Volume 9, Issue 4, December 2021
Pages:
96-103
Received:
15 September 2021
Accepted:
4 October 2021
Published:
21 October 2021
Abstract: The use of air-soil heat exchangers for cooling habitats has developed considerably in recent years. An air-soil heat exchanger (ASHE) is a geothermal system that uses the thermal inertia of the soil to heat or cool part of the air to renew a habitat. It is sometimes called a Canadian well or a Provencal well. In this present work, we have presented the experimental prototype implemented in Ouagadougou. It is an air-soil heat exchanger consisting of a U-shaped PVC pipe of horizontal length 15 m, diameter 16 cm and placed at a depth of 1.5m (slope of about 2%) in floor. The experimental work consists in measuring, on the one hand, the temperature of the air from the inlet of the tube to the outlet in steps of 2 m in length and, on the other hand, the temperatures of the ambient air, air in the habitat and soil at 1 m and 1.5 m depth. This study has allowed analyzing the evolution of air temperatures in the system. The thermals performances of air-soil heat exchanger have been also evaluated and his influence on air temperature in the habitat. The results show that the experimental setup is of good quality. In practice, the thermal efficiency is between 20% and 70%.
Abstract: The use of air-soil heat exchangers for cooling habitats has developed considerably in recent years. An air-soil heat exchanger (ASHE) is a geothermal system that uses the thermal inertia of the soil to heat or cool part of the air to renew a habitat. It is sometimes called a Canadian well or a Provencal well. In this present work, we have presente...
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