English

In this article the authors discussed the issue of how to design a healthy building from three viewpoints : - the importance of an environmental sustainability that contributes to health, productivity and quality of life. - the human influence on healthy indoor air- and ongoing developments in controlling emissions from products and building materials ( low chemical emissions and good fungal resistance).

Ozone removal, concentration of ultrafine particles (2 to 64 nm), and VOCs were measured on sooty ventilation filters. A F8 class filter loaded by diesel soot particles in a motor laboratory and a heavily loaded F5 class filter used for 8 months in a bus service terminal were used in the tests. In addition, both filters were saturated with alphapinene vapor to examine possible formation of secondary aerosols by heterogeneous reactions. Both filters removed ozone effectively in the beginning. Then, the removal efficiency declined until it reached a steady state level in three hours.

This study is in the frame of indoor air quality from the particle pollution point of view and its goal is to determine the particle penetration factor for different common types of leaks which deteriorate the filter capacity of building envelope. The most important parameters for the particle penetration are: the crack geometry, the pressure difference and the particles diameter. CFD numerical simulations have been done for rectangular cracks with 0.2mm and 1mm height for 40mm and 94mm length, also changing the pressure difference between 4Pa and 10Pa.

AIRSECURE project develops a protective solution against airborne threats for airport environment. The development efforts are based on risk analysis, and the developed technologies include high efficiency particle filtration, chemical filtration, detection of aerosol particles and hazardous chemicals

Three different air purifying devices are compared in terms of their influence on indoor air quality. Two systems use ozonisation and ionisation. One system uses ionisation and special filter devices (manufacturer's specifications). In the case of ozone production the perceived intensity and the PD value will increase to inacceptable values. The chemical analyses shows that the increase aldehyde concentration is probably caused by surface reactions between material and ozone.

This paper reviews indoor air quality needs; then it addresses gas phase air cleaning (a little understood, little used in HVAC, high opportunity technology) - particularly by adsorption. Opportunities and limitations are discussed and the capital and energy cost impacts of use are detailed. The role of ventilation/IAQ standards is addressed.

The application of a ventilation system in a new building is a multidimensional complex problem that involves both quantifiable and non-quantifiable data e.g. energy consumption, indoor environment, building integration and architectural expression. This paper presents a structured method for evaluating the performance of a ventilation system in the design process by treating quantifiable and non-quantifiable datasets together.

The building of the warehouse complexes, equipped with the contemporary technologies of storage and the sending of goods, intensively is developed in Russia. In 2002-2005 scientific production venture "Termek" and The Central Research Institute for Industrial Buildings was executed the design and the building of the heating systems and ventilation of the warehouse complex "SHERLAND" (area of drying storages - 26000 m, the height 17m.).
The system of hot-air heating and ventilation with the supply of heated air through the nozzles

Measuring AERs in an effective, real-time, easy and low-cost way is still a challenge, especially in China where rooms were usually naturally ventilated but not with the Heating, Ventilating and Air Conditioning (HVAC) system. A new AER monitoring method using continuous CO2 sensor was validated through both laboratory experiments and field studies. Controlled laboratory simulation tests were conducted in a 1 m environmental chamber at different AERs (0.1~10.0 hr-1). AERs were determined using steady-state method and decay method based on box model assumptions.

Changes of actual load often lead to trouble with the operation of the ventilation system. The design data are no longer correct if, for any reason, the actual load has permanently changed during the usage. The proposed ventilating system maintains the most commonly developed harmful gaseous contaminant content below the permissible level in spaces with forced ventilation. Sensors are mounted in every room, in a given height. By following the demand, the supplied fresh air volume matches the momentary load.