Risk assessment of formaldehyde in typical office buildings in Taiwan

Field investigations have been conducted for that study in 5 office buildings of Taiwan to assess the risk of formaldehyde exposure for general population.This study demonstrates that the level of formaldehyde emitted from building materials can be affected by climatic conditions such as temperature and relative humidity. Consumers must be protected from exposure and it is urgent to help the industry to develop low emission materials in that part of the world.

Significance of humidity and temperature on skin and upper airway symptoms

The aim of that study was to assess the impact in an office environment of absolute and relative humidity, temperature and humidification on workers' skin and upper airway symptoms (such as nasal or pharyngeal dryness, eyes problems, congestion). Physical factors associated with symptoms and perceptions were appraised with logistic regression models.

Indoor air quality and energy performance of air-conditioned office buildings in Singapore

This paper presents the results of an indoor air quality-energy audit made in five air-conditioned office buildings in Singapore. Data are presented from both objective and subjective measurements.It appears that on the one hand BSI (Building Symptom Index) values are in correlation with IAQ and thermal comfort acceptability but on the other hand, no significant correlation exists between BSI (Building Symptom Index) and IPSI (Indoor Pollutant Standard Index).

The link between symptoms of office building occupants and in-office air pollution : The Indoor Air Pollution Index

The Indoor Air Pollution Index (IAPI) has been developed to put an end to communication concerns among building tenants, building managers, and IAQ investigators. That index, simple and easy to understand, satisfies the 3 criteria of environmental indices because it relates to occupant symptoms, is easy to communicate to the consumer and can be used as an environmental and management tool for reducing in-office air pollution effectively.The index uses a unitless single number between 0 (lowest pollution level and best IAQ) and ten (highest pollution level and worst IAQ).

Too hot Too cold - Diagnosing occupant complaints

Diagnosing occupant complaints is not an easy task. The following article is a guide for engineers and owners confronted with hot/cold problems. It advises how to evaluate the occupant's complaint (with seven questions), then to review the HVAC equipment performances for a proper operation, to make load calculations, to review zoning conflicts and draft problems, to measure the humidity level, and the omni-directional drafts.

Local capture of contaminants

Major sanitory problems occuring at industrial workplaces are induced by air contaminants. They represent a high financial cost. This paper sums up the main steps and results of the European Research project COST that has developed and optimized a system specifically geared to the local capture of contaminants : the REinforced EXhaust System (REEXS)

Thermal response of Korean college students in a thermal environment chamber

The thermal comfort response of Korean college students was investigated in a thermalenvironment chamber both in summer and winter seasons. Eight thermal conditions consistingof four air temperatures (24, 26, 28, 30C) and three relative humidities (40, 60, 80%) wereselected in summer. Eight thermal conditions consisting of five air temperatures (18, 20, 22,24, 26C) and two relative humidities (40, 60%) were chosen in winter. In each test, sevenfemales or seven males were questioned in the chamber for 3 h, where thermal and comfortsensations were surveyed every 15 min.

Thermal diary-records of temperature exposures during a 24-h period

This paper documents people’s comfort during a 24-h period of typical daily life, immediately followed by a standard climate chamber experiment. The objective of this study is to determine the influence of outdoor weather, expectation, adaptive behaviours

Prediction of indoor sol-air temperature in an atrium space with a vertical distribution

This study suggests a computer model capable of predicting thermal environment of an atriumand calculating indoor sol-air temperature, which can evaluate the influence of heat loads thatthe atrium space puts on the adjoining rooms. The computer model is based on zonal modelcombined with the solar radiation model using the Monte Carlo method and ray-tracingtechnique. The accuracy of computer model was validated through scale model test and fieldmeasurement. The average relative error of solar radiation model for predicting solar radiationintensity in atrium space was 11.8%.

Transient thermal sensation and comfort resulting from adjustment of clothing insulation

This study investigated the transient effects on human thermal responses of clothingadjustments. Two different levels of activity were tested, and the temperature was set to resultin a warm or cool thermal sensation at each activity level.

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