Philosophy About the Quality of Our Indoor Climate

2011 ◽  
pp. 213-232 ◽  
Author(s):  
Leo de Ruijssher
Keyword(s):  
Indoor Climate

Short-term Measurements of Indoor Environmental Quality in Selected Offices – Case Study

2017 ◽  
Author(s):  
Ludmila Meciarova ◽  
Silvia Vilcekova ◽  
Eva Kridlova Burdova ◽  
Ilija Zoran Apostoloski ◽  
Danica Kosicanova
Keyword(s):  
Environmental Quality ◽  
Indoor Air ◽  
Indoor Environmental Quality ◽  
Indoor Climate ◽  
Climate Conditions ◽  
Healthy Environment ◽  
Health And Wellbeing ◽  
The One

Decent quality of indoor air is important for health and wellbeing of building users. We live, work and study in indoors of various types of buildings. Often people are exposed to pollutants at higher concentrations than these that occur out-doors. Continual investigation of indoor air quality is needed for ensuring comfort and healthy environment. Measuring and analysis of occurrence of physical, chemical and biological factors is the first step for suggestion of optimization measures. Inside school buildings there are often inadequate indoor climate conditions such as thermal comfort parame-ters or ventilation. The aim of this study was determination of indoor environmental quality in selected offices in the building of elementary school in Slovakia. The values of operative temperature were not within the optimum range of values for the warm period of the year in one of the monitored offices. The intensity of illumination was lower in the two offices. Low levels of particulate matters were measured except the one office where permissible value was exceeded by 7.6%.

Indoor Environment Influenced by Radiant Effect of Floor Heating

2016 ◽  
Vol 824 ◽  
pp. 218-225
Author(s):  
Mária Budiaková
Keyword(s):  
Indoor Environment ◽  
Office Building ◽  
Thermal Manikin ◽  
Experimental Measurements ◽  
Indoor Climate ◽  
Thermal Discomfort ◽  
Scientific Analysis ◽  
Radiant Floor Heating ◽  
Floor Heating

The paper is oriented on the indoor environment influenced by radiant effect of floor heating. Questionnaire survey has showed problems with providing quality of indoor climate in new office building in Bratislava. The cause of problems was formation of local thermal discomfort, in particular mainly radiant asymmetry. To clarify the radiant asymmetry, there were carried out experimental measurements with thermal manikin in a special microclimatic laboratory for the radiant floor heating. The scientific analysis and the outputs from measurements are presented in this paper. In the conclusion of this paper are introduced principals for designing the offices’ interiors without local thermal discomfort.

scholarly journals OVERALL EVALUATION OF INDOOR CLIMATE AND ENERGY FOR ALTERNATIVE OFFICE DESIGNS USING THE ECO‐FACTOR

2006 ◽  
Vol 12 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Erik Bjørn ◽  
Henrik Brohus
Keyword(s):  
Environmental Effects ◽  
Energy Use ◽  
Evaluation Method ◽  
Indoor Climate ◽  
Model Case ◽  
Design Alternatives ◽  
Energy Part ◽  
Overall Evaluation

To facilitate the decision‐making and communication, an evaluation method has been devised that incorporates environmental effects of the energy use with thermal and atmospheric indoor climate in a score on an absolute scale from 0–100 %, called the “Eco‐factor”. This factor is based on indicators of physical properties. For the indoor climate part these include mainly the indoor temperature, velocity, and concentration fields. The energy part considers the energy distributed to energy sources, and the environmental effects of the resulting airborne emissions evaluated by Life Cycle Assessment (given by default figures from a database). The tool is used to make an overall assessment of the quality of design alternatives, where the “costs” (energy) is compared to the “benefit” (indoor climate), and to identify possibilities for improvement. The paper shows a model case study of an office building, where choices are considered that must be made in an early design phase.

Indoor Climate of Residential Interiors and Asymmetry of Radiation

2014 ◽  
Vol 1041 ◽  
pp. 367-370
Author(s):  
Mária Budiaková
Keyword(s):  
Questionnaire Survey ◽  
Residential Building ◽  
Convective Heating ◽  
Experimental Measurements ◽  
Indoor Climate ◽  
Thermal Discomfort ◽  
Glazed Surface ◽  
Scientific Analysis

The paper is oriented on the indoor climate of residential interiors. Questionnaire survey in new residential building has showed problems with securing quality of indoor climate. In smaller residential interiors with large glazed surface was this problem bigger. Cause of problems was formation of local thermal discomfort. One of the most serious area of local thermal discomfort is asymmetry of radiation. To clarify asymmetry of radiation, there were carried out experimental measurements in a special microclimatic laboratory for convective heating. In this paper, there is presented the scientific analysis and the outputs from measurements. In the conclusion of this paper are introduced principals for designing the residential interiors without local thermal discomfort.

Analysis of Thermal Comfort and Microclimatic Conditions in Special Workplaces

2019 ◽  
Author(s):  
Zuzana Kolková ◽  
Peter Hrabovský ◽  
Jozef Matušov
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Operating Conditions ◽  
Working Environment ◽  
Physical Parameters ◽  
Indoor Climate ◽  
Microclimatic Conditions ◽  
Radiant Temperature ◽  
Graphical Presentation

Microclimatic conditions and thermal comfort are important factors in the design of high quality buildings and the quality of working conditions for people in different operations. The importance of thermal comfort in the indoor environment can not be underestimated. A vast majority of complaints about indoor climate relate to poor thermal comfort. This paper presents an analysis of subjective thermal comfort measurement. The experiments were conducted to collect the data in the real conditions. ComfortSense system was used in these experiments. A Humidity and an Operative probe are available together with application software with graphical presentation of results including the Predicted Mean Vote (PMV) and Predicted Percentage Dissatisfied (PPD). The operating conditions are regulated by law in our country. The aim of the legislation is to protect people in the working environment and create appropriate health conditions for them. The goal of a thermal comfort analysis is finding an appropriate function of the physical parameters (background radiant temperature, air temperature, air humidity, wind speed, clothing, metabolic rate, and core temperature), which would yield the corresponding comfort/discomfort level.

scholarly journals Cognitive Occupancy Appraisal for Sustainable Housing

2020 ◽  
Vol 9 (1) ◽  
pp. 68-72
Keyword(s):  
Energy Efficient ◽  
Indoor Climate ◽  
Sustainable Buildings ◽  
Sustainable Housing ◽  
Inappropriate Use ◽  
Energy Efficient Buildings ◽  
Building Operation ◽  
Occupancy Behavior ◽  
And Training

Concept of sustainable buildings is defined as use of various strategy and standards of working to intensify the quality of life of occupants, secure the environment of neighborhood by lessen the construction rate of consumption of natural resources. Conventional buildings are not much conveniently rated over energy efficient buildings as per indoor climate basis, whereas when studied furthered the users have different reviews. The quality occupancy when evaluated from varying results of users has various aspects. Inappropriate use of building may concerns in bad experience in conventional buildings by the users. New area for further research could be identified as required information for an operation and use is difficult for overall quality experience of the building. There is a shortage of research that takes into account of “Unawareness” or “inconveniences” of occupancy behavior with a survey defining the authentic gap in research. Research on use of energy efficient buildings is increasing, but there is still a scope to give more information and training in operation and use. This paper justifies occupancy evaluation with indoor climate, building operation, occupancy attitudes, and economic.

INCENTIVE TOURISM AS A WAY OF PERSONNEL MOTIVATION

2016 ◽  
Vol 10 (5) ◽  
pp. 40-48
Author(s):  
Ирина Агальцова ◽  
Irina Agaltsova
Keyword(s):  
Positive Impact ◽  
European Countries ◽  
Indoor Climate ◽  
Quality Of Work ◽  
Incentive Programs ◽  
The Us ◽  
Basic Features ◽  
Positive Results

The article investigates the incentive tourism as one of the effective ways of non-monetary encouragement of staff. The author defines the incentive tourism as one of the components of business tourism and the considers the basic features of the organization of incentive tour. The article presents the statements of well-known motivation theories and based on them analyzes incentive tourism as a way of motivation. The author proves that incentive programs can meet the specific needs of an employee, encouraging to a more qualitative and productive work. The article also notes the high valence of incentive tourism, and explains why this type of tourism is not well developed in Russia in comparison with the US and European countries. The author concludes that the using by companies incentive tourism programs not only can positively affect the indoor climate in the team, but also have a positive impact on strengthening the company´s commitment, improving the quality of work, professional-level rise, and this, in turn, necessarily affect on the favorable development and prosperity of the organization. Thus, the use by organizations of incentive programs is regarded as an effective investment, bringing positive results over the long term.

Heat Transfer in Three-Dimensional Single-Span Greenhouses Containing a Roof Ventilator

2017 ◽  
Author(s):  
Sunita Kruger ◽  
Leon Pretorius
Keyword(s):  
Heat Transfer ◽  
Rayleigh Number ◽  
Crop Production ◽  
Three Dimensional ◽  
Plant Production ◽  
Indoor Climate ◽  
Cfd Models ◽  
Dimensional Version

Greenhouses are used worldwide to grow various types of plants in climates and seasons not usually adequately suited for optimum growth. The microclimate inside greenhouses is of major importance as it directly affects the quantity and quality of crop production. Ventilation is a vital mechanism for maintaining an acceptable indoor climate for optimum plant production. A three-dimensional CFD model of a single span greenhouse with roof ventilators is presented. CFD results from a two-dimensional version of the model are compared with appropriate previous experimental results. The role of the Standard versus Low-Reynolds number k-epsilon turbulence model is emphasized. The addition of a ventilator to the roof of a single-span greenhouse was found to have an influence on the heat transfer inside the cavity. Various configurations of three-dimensional CFD models of the greenhouse with different ventilator opening sizes for zero and 45 degrees roof angle were investigated. Additional Nusselt-Rayleigh number relationships for specific Rayleigh number ranges were deduced, and can be useful for a greenhouse designer.

scholarly journals Heat Recovery Ventilation Systems and their Physical Quantification

2021 ◽  
Vol 1203 (2) ◽  
pp. 022045
Author(s):  
Boris Bielek ◽  
Daniel Szabó ◽  
Josip Klem ◽  
Roman Grolmus
Keyword(s):  
Energy Efficiency ◽  
Heat Recovery ◽  
Ventilation System ◽  
Co2 Concentration ◽  
High Energy ◽  
Operating Conditions ◽  
Indoor Climate ◽  
Measurement Results ◽  
Ventilation Systems

Abstract The essence of ventilation is the exchange of air in the room for fresh outside air. At the same time ventilation is a factor that can significantly affect the energy efficiency of a building. Hygienic requirements for ventilation of interiors of buildings in the context of increasing the energy efficiency of buildings lead to the transformation of unregulated ventilation by infiltration to regulated ventilation systems with heat recovery. The regulated ventilation system makes it possible to optimize the ventilation intensity on the basis of a stimulus from the room user or automatically on the basis of sensors monitoring the quality of the indoor climate (temperature and relative humidity, CO2 concentration in the air, etc.). In addition, if we use a ventilation system with heat recovery from the exhaust air to preheat the fresh supply air to the room, we can achieve high energy efficiency of the building by meeting the hygienic criteria of the indoor climate. The article describes heat recovery ventilation systems and their basic conceptual solutions applied in the modern architecture. The heat exchange between the hot exhaust air and the cold supply air in the winter takes place in heat recovery ventilation units in the heat exchanger. The efficiency of heat recovery defines how much heat we can transfer from the exhaust air to the fresh air in the heat recovery exchanger. The article analyses individual factors influencing the efficiency of heat recovery. Due to the fact that the manufacturers of heat recovery ventilation units declare in their brochures or websites the values of the maximum efficiencies of their products, we were interested in their real efficiencies under normal operating conditions. Therefore, we subjected to experimental research in a large climate chamber a product from the German manufacturer Lunos, namely a specific type of decentralized heat recovery unit Lunos Nexxt E. The article describes the methodology of laboratory experiment, used experimental basis, brings and analyses measurement results and calculates real efficiency of the subject heat recovery in accordance with STN EN 13 141. In the end it compares measured values with the values from the manufacturer.

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