A method of apportioning indoor radon concentration to the constituent building components

Indoor radon concentrations in high-rise buildings are found to be affected by two majorfactors, namely the ventilation rate and the radon production rate of building materials. In thispaper we present a method to apportion the indoor concentrations to their individual emissionsources. The method consists of two parts: one part is to determine the overall radonproduction rate in a sealed room space, and the other part is to determine the radon productionrate from a particular component. The methods are based upon mass balance models.

Natural ventilation of light well in high-rise apartment building

A large opening has to be designed at the bottom of a Void (light-well in high-rise apartment building) in order to keep the indoor air quality (IAQ) acceptable, because of the exhaust gas discharge of the gas water-heater. This paper presents a simple calculation method of the ventilation rate induced by wind force and thermal buoyancy through openings at the bottom, along with heat sources such as water-heaters.

A typically frustrating building investigation.

Describes a case study of the NIOSH investigation of the 101 Marietta Tower in Atlanta, USA, a high rise office building suffering from sick building syndrome. Concludes that the use of conventional industrial hygiene approaches for conducting indoor air quality investigations will in most cases by non-productive. States that first efforts should be directed toward understanding and evaluating the operation of the building's HVAC system to determine that enough outdoor air is provided. Distributing a follow-up questionnaire to the occupants is also important.

Study on effect of pulsation of high-rise building wind pressure upon indoor thermal comfort.

In accordance with the regular and irregular variation principle of high-rise building wind pressure with the variation of time, wind direction proposed in associated reference and high-rise building around flow aerodynamic characteristic. An analysis is made about the characteristic and range in which wind pressure on high-rise building changes largely with coming flow, time and wind direction in the paper. On this base, this paper points out that building heat load and air infiltration rate is unstable and has large fluctuation in certain period.

Comments on the design of smoke management in high-rise buildings.

This paper explores the problems about the layout of smoke emission for inside hallways of high-rise buildings and underground garages, the selection of smoke emission fans and fire proof valves for basement air feed systems. With the continuous development of urban construction in our country, high-rise buildings are greatly increased in the large and middle cities, the fireproof problems have been paid great attention by all parties concerned. Authors put forward some superficial views on the design of smoke management for high-rise buildings.

Study of airflow and contaminant migration simulation results for tall buildings finds some vary markedly from measured results.

Describes a project which attempted to match simulated and measured tracer gas test results and to determine how much effort is necessary to produce sufficiently accurate results. The research assessed the overall value of CONTAM96 as a representative example of available simulation-model programs from both technical and practical viewpoints.

Environmental design for an urban church complex in Hong Kong SAR. Process and methodology.

This paper outlines an environmental design research program on an urban high-rise church complex in Hong Kong. The main focus is on the methodology and process of the integrated design effort of the research team and the project architect during the schematic design and the on-going design development stage. Environmental design concepts and subsequent simulation/evaluation study on the daylighting and ventilation of the main church assembly hall and the progression route are documented.

Investigating IAQ complaints after renovations at an office building in New York City.

Describes an investigation of the indoor air quality of a music company at their New York City office. The office was on the 31st floor of a block. Recommendations for producing better IAQ were as follows: 1) Recalibrate return airflows where needed to harmonise them with the values specified in the HVAC system design. At the same time verify and adjust airflows from the supply-air diffusers. The amount of outdoor air should comply with the ASHRAE Standard 62.1-1999 industry guideline of 20 ft2 per person per minute in offices.

Modelling ventilation and infiltration energy impacts in mid and high-rise apartment buildings.

A literature search was undertaken to assemble and interpretthe-best available· data that can be used for perfonning multizone airflow modelling in mid and high rise apartment buildings. The best currently available data is presented and areas where further field testing research is required are identified. A multizone airflow modelling software tool was used to provide an analysis of ventilation related energy issues in a newly constructed 10 story high-rise apartment building.

Effectiveness of energy refurbishment measures applied to high-rise dwellings.

From 1953 to 1975, some half a million high-rise flats were constructed in the UK in response to the need at that time for the rapid provision of substantial numbers of affordable dwellings. For a variety of reasons, including environmental and social problems, many of these buildings were subsequently demolished. However, many housing authorities still own a considerable number of high-rise developments which, while structurally sound, will require to be upgraded if they are to continue in service for rental purposes.