Optimum ventilation and air flow control in buildings

Parent, Denis; Stricker, Saul; Fugler, Don

doi:10.1016/s0378-7788(97)00045-5

Cited by 11 publications

(8 citation statements)

References 1 publication

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“…Negative difference indicates that there is no heating source inside and ventilation is limited. When the ventilation rate is limited, it is well known that high formaldehyde levels can be reached in enclosed spaces [36,37]. In our study, it was found that (Table 4) there are significant variations in formaldehyde levels for different ⌬T values (pϽ0.05).…”

Section: Variation Of Formaldehyde Concentrations With Respect To Indoor Environment Characteristicssupporting

confidence: 48%

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Menteşe

Güllü

2006

Indoor and Built Environment

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A study in Ankara was performed to examine any association between formaldehyde levels and housing characteristics. This involved collection of 309 air samples which were analysed using a colorimetric method. Formaldehyde concentrations ranged from 2.34 g·m 3 to 866.22 g·m 3 (median, 71.48 g·m 3). Formaldehyde levels were elevated in homes inhabited by at least one smoker and were correlated with indoor and outdoor temperature, age of house and density of plywood furniture. Sufficient sample numbers were collected to allow the data to be statistically divided into five daytime periods. These data suggest that the formaldehyde concentrations were generally slightly higher in the afternoon. A simple mathematical model involving smoking activity has been developed for estimating the formaldehyde decay rates for two rooms in one of the typical background homes. When the windows and doors were closed, the formaldehyde concentrations in indoor air decreased within 10h to background concentrations, although this change depended on the room volume and the natural air exchange rate.

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Section: Variation Of Formaldehyde Concentrations With Respect To Indoor Environment Characteristicssupporting

confidence: 48%

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Menteşe

Güllü

2006

Indoor and Built Environment

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“…During a field study of indoor air quality in houses in Quebec involving continuous monitoring [ 1 ], it was found that under certain conditions, the level of CO2 in bed rooms often exceeds 4,500 ppm. Normal outdoor ambient levels are about 350 ppm.…”

Section: Introductionmentioning

confidence: 99%

Physiological Responses to Elevated Carbon Dioxide Levels in Buildings

Stricker¹,

Bourgeau²,

Fonberg³

et al. 1997

Indoor Built Environ

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Comparative tests were conducted involving 22 persons sleeping in a normal and in an elevated carbon dioxide (CO(2)) environment to determine respiratory and urinary responses. Carbon dioxide levels in bedrooms with 2 occupants with the bedroom doors and windows closed can rise to 4,500 ppm during the night. The results indicate that the exposure levels encountered in these bedrooms do not affect the respiratory response, and that urine pH levels are independent of room CO(2) levels, and somewhat dependent on diet. Since the buffering mechanism by the kidneys involves the release of phosphate for buffering, exposure to moderately elevated CO(2) levels for several hours at a time may affect the excretion of phosphate and the metabolism of bone in the body. The literature indicates that persons exposed to 10,000 ppm over a period of several weeks experience a measurable bone loss. The threshold ambient level of CO(2) at which this effect begins to take place and degree are not known.

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“…This implies important stimulus for a renewed research activity with the aim of finding energy saving measures that donot compromise IAQ (Parent et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Developing a new cost-efficient control strategy for an actual confectionery plant through the combined exploitation of experimental and numerical analysis

Lunghi

Mariani

2003

Int. J. Energy Res.

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SUMMARYAchieving energy absorption reductions while improving indoor air quality is a major task when designing new air conditioning systems. A cost-effective way to improve energy efficiency without compromising the thermal comfort consists of developing better control. In the present work, an extensive experimental campaign has been coupled with a theoretical analysis with an effective approach. A simulation tool has been implemented and, through its predictions, an efficient control strategy has been developed in a system that resulted in significant energy savings and environmental benefits.

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Optimum ventilation and air flow control in buildings

Cited by 11 publications

References 1 publication

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Physiological Responses to Elevated Carbon Dioxide Levels in Buildings

Developing a new cost-efficient control strategy for an actual confectionery plant through the combined exploitation of experimental and numerical analysis

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