Evaluation оf Microclimate Parameters by Indicators of Local Heat Comfort in the Room Which Has Failures of Outside Observing Structures
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2018, Vol 27, Issue
Abstract
The article deals with the task of evaluating the parameters of the microclimate in the room, which has defects of external enclosing structures, using the indicators of thermal comfort PMV (Predicted Mean Vote), PPD (Predicted Percentage Dissatisfied) and criteria of local thermal comfort. Objectives of the study is the evaluation of the influence of the parameters of the microclimate in the room, which has defects of external fencing structures on the indicators of thermal comfort PMV and PPD and criteria for local thermal comfort; determine the limits of a possible reduction of the temperature of the internal air in the room, depending on the percentage of defective zone of the outer wall, the moving activity of man and the thermal resistance of clothing. The basis of the task of evaluating the parameters of the microclimate in the room is the calculation method for predicting and evaluating the microclimate in the room and its impact on the human condition. The method is based on the temperature sensations of the body and its thermal balance. The analytical data obtained in the article show that in a building that has defects in external fencing structures it is possible to obtain uncomfortable conditions of microclimate parameters, which affect the human body and its senses. From the data obtained by forecasting the parameters PMV, PPD it is seen that at internal air temperature of 20 °С and internal velocity in the range 0...0.5 m/s, for the senses of a person, the room belongs to class C, and the appearance and increase of defects only enhances these feelings. By parameter PD, although we get it in class A. But complex evaluation shows that the parameter is reduced to the lowest class. The calculation method can be used to predict and evaluate the microclimate in a room that has defects in external enclosing structures
Authors and Affiliations
V. Petrenko, К. Dikarev, А. Petrenko, I. Holiakova
Keywords
Related Articles
- EP ID EP556034
- DOI -
- Views 75
- Downloads 0
A Method for the Analysis of Isotherms, Surface Fractal Dimension and Dynamic Chaos of Moisture Exchange in Colloidal Capillary-Porous Museum Exhibits at Changeable Microclimate Conditions
On the basis of sorption-desorption isotherms in colloidal capillary-porous bodies (CCPT), their surface fractal dimension was calculated and its spatial-temporal changes were investigated. The physic-chemical and rheolo...
Analysis of Heat And Mass Transfer and Deformation of Colloid Capillary-Porous Bodies Processes by Fractal Analysis and Discrete Nonlinear Dynamics Methods
The fractal analysis of long-term series of parameters of colloidal capillary-porous bodies in conditions of heat and mass transfer to the environment and the resulting deformation process are presented. A fractal estima...
Increasing the Efficiency of Cleaning Coke Oven Gas from Dust, Carbon Dioxide and Formaldehyde Vapors in Scrubbers of the Attachment Type
In this paper, the results of industrial tests of a new triangular attachment with cross-holes for cleaning coke oven gas from dust, carbon dioxide and formaldehyde vapours are given. According to these data, comparative...
Optimization of the Parameters of the Heat Network Under a Reduced Temperature Schedule
The economic and environmental problems of Ukraine lead to decrease the water temperature in heat supply systems. Increasing the cost of fuel made it inappropriate to schedule temperature 95/70. To switch to a lower temp...
Influence on the Environment of a Thermal Power Plant on Wood Waste
The possibility to increase the effectiveness of the solar radiation energy usage up to 30^40 percent was established. This result was achieved by heating the energy source with increased flow rate during the expanding o...