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.

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.

scholarly journals Intelligent Autonomous Vehicle for Indoor Mail Delivery Using Wireless Sensor Network

2019 ◽  
pp. 12-19
Keyword(s):  
Indoor Environment ◽  
Autonomous Vehicle ◽  
Office Building ◽  
Wireless Sensor ◽  
Generalized Regression Neural Network ◽  
Improve Quality ◽  
Office Work ◽  
Localization Accuracy ◽  
Delivery Problem

The number of office transactions continually increasing ,therefore, several techniques proposed to improve quality of service for the office work. Improvements including electronic archiving limited; they didn’t solve the problem of transferring parcels. Thus, paper transactions still exist inside a single office building and the transfer needed within a time limit. This leads to suggesting the autonomous vehicle for solving the delivery problem. In-order-to enable such the navigation within the indoor environment, an acceptable localization accuracy must exist. The wireless fingerprinting with Generalized Regression Neural Network (GRNN) for classification suggested in this research for localization estimation. Furthermore, the estimated location fused with the Odometer to bring more stable results. The Accuracy gained about 4.1cm which enables the vehicle to localize and navigate. ZigBee modules with Arduino microcontrollers are the basic items of the research.

scholarly journals Energy Flexibility Assessment of a Zone with Radiant Floor Heating System by Means of Experimental Measurements

2020 ◽  
Vol 172 ◽  
pp. 12010
Author(s):  
Ali Saberi Derakhtenjani ◽  
Andreas Athienitis
Keyword(s):  
Concrete Slab ◽  
Heating System ◽  
Experimental Measurements ◽  
Point Change ◽  
Office Space ◽  
Heating Load ◽  
Radiant Floor Heating System ◽  
Radiant Floor Heating ◽  
Signal Profile ◽  
Floor Heating

This article investigates the potential energy flexibility of a thermal zone that contains a hydronic radiant floor heating system embedded in a concrete slab. The energy flexibility of the zone is quantified from experimental measurements for a specific zone air set point change. The experiment was carried out in an experimental perimeter zone test cell (PZTC) designed to simulate the conditions of an office space near a window which has a radiant floor heating system. The PZTC is located inside a controlled environmental chamber (EC). The EC provides the desired exterior conditions. The temperature inside the PZTC is controlled with a thermostat that adjusts the heating power delivered from the hydronic pipes to the slab. It was observed that modulating the zone air temperature setpoint results in significant changes in the heating load, and thus providing a certain amount of energy flexibility. Application of the quantified energy flexibility along with applicable strategies in response to a specific price signal profile are discussed.

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.

Method and Analysis of a Dynamic Simulation of Ondol Heating

2010 ◽  
Vol 20 (1) ◽  
pp. 112-119 ◽  
Author(s):  
Sun Kuk Kim ◽  
Hiki Hong ◽  
Sihwan Kim ◽  
Jeong Tai Kim
Keyword(s):  
Energy Consumption ◽  
Dynamic Simulation ◽  
Indoor Environment ◽  
Building Energy ◽  
Housing Unit ◽  
Heating Systems ◽  
Housing Environment ◽  
Precise Simulation ◽  
Radiant Floor Heating ◽  
Floor Heating

Ondol heating, a kind of radiant floor heating, is the main form of heating being used in housing units in Korea. Although Ondol can provide a more comfortable and healthy indoor environment than any other form of heating systems, a more precise simulation is required to further improve the system to prevent over and under heating of the housing environment. However, due to complexity, building energy simulation has so far not been performed, for systems such as Ondol and other relevant facilities. For evaluating energy consumption and indoor temperature variation, a new method has been proposed. In this study, a dynamic simulation of Ondol heating was carried out by combining TRNSYS and EES. This new system of building simulation could contribute to determine over or under heating of the system in a housing unit. The simulation results of a typical housing unit in Korea showed a good trend in a viewpoint of actual behaviour of Ondol heating, maintaining a comfortable and healthy indoor environment with less energy consumption.

Aerodynamic Mode of Double-Skin Transparent Façade with Narrow Physical Cavity and its Influence on Indoor Environment in the Summer Season

2013 ◽  
Vol 649 ◽  
pp. 29-32
Author(s):  
Boris Bielek ◽  
Milan Bielek ◽  
Stanislav Mikle ◽  
Jan Szabo
Keyword(s):  
Lift Force ◽  
Indoor Environment ◽  
Aerodynamic Resistance ◽  
Summer Season ◽  
Indoor Climate ◽  
Thermal Discomfort ◽  
External Wall ◽  
Double Skin ◽  
Air Lift

Tall slab-shaped building of north-south orientation. Narrow-cavity double skin transparent façade. South (S) external wall with application of double-skin transparent façade. Aerodynamic regime of narrow-cavity double skin transparent façade in summer. The total aerodynamic resistance of natural physical cavity and its relationship to the convection air lift force. Air stagnation in the cavity as the physical defect of the double-skin façade. Aerodynamics of the double-skin transparent façade as a conditional factor of the thermal discomfort of indoor climate in the building.

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