Ambient temperature may influence both the emission and the perception of human odour. This paper studies how human odour is perceived at different temperatures.
In this demonstration project the energy consumption, temperature and humidity curves, and occupancy behaviour are measured, registered and evaluated in 8flats with air infiltration and ventilation as stated in VDI 2088 in thecentre of a block. These are compared with the other 16 flats in the block. Results of the first tests are presented.
Over a one-year period, measurements were taken of air temperature, air humidity, ventilation rate, concentration of organic gases and vapours, formaldehyde and odour intensity in a small unfurnished bedroom in each of 6 new unoccupied low energy houses. The indoor climate was on average characterized by an air temperature of 24.7 plus or minus 3 degrees C, and an air humidity of 5.9 plus or minus 2.0 g/kg. Ventilation in each room was between 0.79 and 2.92 air changes per hour. On average 14 different compounds were identified in the samples, a total of 23 compounds being identified.
The principal environmental factors that affect human comfort are air temperature, mean radiant temperature, humidity and air speed. Presents asimplified model of thermal comfort based on the original work of Fanger, whorelated thermal comfort to total thermal stress on the body. The simplified solutions allow the calculations of predicted mean vote (PMV) and effective temperature which (in the comfort zone) are linear in the air temperature and mean radiant temperature, and quadratic in the dew point, and which can be calculated without any iteration.
A new statistic for quantifying climate, Infiltration Degree-Days, is introduced. These serve the same function for infiltration and infiltration-related processes that standard degree-days have served for conduction and conduction-related p
Reports a case study dealing with the relation between ventilating and airing behaviour and the outside climate. Also the significance of other variables such as preferences with respect to the indoor climate are considered. Wind speed is found to correlate, but outside temperature (varying from -3 to +9 degrees C) does not correlate with the length of time the windows in the bedrooms and bathrooms are opened. Rainfall and sunshine also seem to have some influence. The main reasons for airing are that the bedrooms are too warm and not fresh.
This paper reports a case study dealing with the relation between ventilating and airing behaviour and the outside climate. Also the significance of other variables such as preferences with respect to the indoor climate are considered. An indication is found that wind speed correlates, but outside temperature (varying from -3 to +9 degrees C) does not correlate with the length of time the windows in the bedrooms and bathrooms are opened. Rainfall and sunshine also seem to have some influence. The main reason for airing is the opinion that the bedrooms are too warm and not fresh.
Discusses the effects of air infiltration and air change rate on temperature and humidity of indoor air. Attempts to quantify the relationship between surface temperature, thermal bridges, thermal resistance and indoor climate.
The air infiltration associated with ventilation in buildings is recognized in ASHRAE Standard 62-1981, Ventilation for Acceptable Indoor Air Quality. In the light of recent trends toward increasingly tight housing, which limits air infiltration for ventilation, dependence on this source of outside air is onepoint that must be carefully considered in the Revised Standard. Other points to be considered are ventilation efficiency, necessary dilution of particulates and other pollutants, and how changes in humidity, air temperature and local heating may alter pollution levels in buildings.
To update the National Association of Home Builders Thermal Performance Guidelines, models were developed, representative of the new houses being constructed in each American state. The models define the number and types of windows and doors,
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