EVALUATION OF HEAT PROTECTION CHARACTERISTICS OF BUILDINGS WITH INTERMITTENT HEATING INSULATED WITH SANDLESS COARSE-POROUS EXPANDED CLAY CONCRETE

Mathematical modeling of process of nonstationary heat transfer through walling exploited in intermitt ent heating conditions is viewed. Analytical dependence is revealed for fi nding of maximum permissible thickness of heat insulation layer providing required heating time. Based on this procedure the results of calculation of outer walls diff erent variants are presented. Comparative analysis of heating time of walling insulated with sandless coarse-porous expanded clay concrete.

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THERMOTECHNICAL CALCULATION OF FLOORS ABOVE UNHEATED BASEMENT IN COTTAGE EXPLOITED UNDER INTERMITTENT HEATING CONDITIONS

URBAN CONSTRUCTION AND ARCHITECTURE ◽

10.17673/vestnik.2017.02.5 ◽

2017 ◽

Vol 7 (2) ◽

pp. 27-31

Author(s):

Alexander A. CHULKOV ◽

Yury S. VYTCHIKOV ◽

Mikhail Ye. SAPAREV

Keyword(s):

Heat Transfer ◽

Energy Consumption ◽

Nonstationary Problem ◽

Heating Time ◽

Time Saving ◽

Intermittent Heating ◽

Calculation Results ◽

Thermotechnical Calculation

The procedure of thermotechnical calculation of fl oor above unheated basement exploited under intermitt ent heating conditions is presented. Procedure in question is based on research of nonstationary problem of heat transfer through walling and takes into account thermo-inertial characteristics of walling materials. Through the example of fl oor above cottage basement is evaluated energy consumption and walling heating time in passing from stand-by mode to work mode with proposed procedure. Based on calculation results recommendations for energy and heating time saving are presented.

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Mathematical Modeling Of Heat Transfer in the System “The Object Of Heating – Thermal Insulation Layer – The External Environment” and Microclimate Parameters of Industrial Premises

MATEC Web of Conferences ◽

10.1051/matecconf/20167201118 ◽

2016 ◽

Vol 72 ◽

pp. 01118

Author(s):

M. A. Ulchiekov

Keyword(s):

Mathematical Modeling ◽

Heat Transfer ◽

Thermal Insulation ◽

External Environment ◽

Insulation Layer

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Assessment of Heat Saving from Intermittent Heating of Buildings with Different Thermal Stability

Materials Science Forum ◽

10.4028/www.scientific.net/msf.931.910 ◽

2018 ◽

Vol 931 ◽

pp. 910-913

Author(s):

Elena G. Malyavina

Keyword(s):

Heat Transfer ◽

Thermal Stability ◽

Heat Resistance ◽

Heat Supply ◽

Operation Mode ◽

Internal Heat ◽

Heating System ◽

Heating Time ◽

The Past ◽

Intermittent Heating

Modern buildings are characterized by a high resistance to the heat transfer of the outdoor enclosing structures, a high density of translucent structures, which put the intermittent room heating in the conditions when the formerly made surveys of the past years are not sufficient. The heat resistance of the building enclosing structures reduces the savings in the intermittent heat supply for heating needs, as it requires an intensive heating before the start of the working days. The more the power of a heating system is and the shorter the heating time is, the more economical the operation mode of this system is. The less the internal heat resistance of the room is, the greater the heat economy is. The thermal savings are bigger, if the room cools quicker after reduction of the heat supply.

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The Comparative Analysis of Wood-Plastic Raw Material to Heat up the Experiment and Simulation of Heat Transfer Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.217-219.559 ◽

2012 ◽

Vol 217-219 ◽

pp. 559-562

Author(s):

Yue Tang ◽

Gang Liu

Keyword(s):

Heat Transfer ◽

Comparative Analysis ◽

Raw Materials ◽

Plastic Material ◽

Theoretical Calculations ◽

Heating Time ◽

Heat Transfer Process ◽

Raw Material ◽

Temperature Changes ◽

The Impact

The authors use the semi-infinite objects unsteady heat conduction theory analysis of the dry thermal conductivity of wood-plastic raw materials.The correspondence between theoretical calculations obtained wood-plastic material thickness and heating time, to determine the impact of wood-plastic raw materials in the water on the thermal diffusivity. ANSYS software material preheating and drying heat transfer to simulate the process to draw the curve of the relationship between temperature and time of the temperature rise process of wood-plastic raw materials, raw material moisture content of wood-plastic temperature changes. The comparative analysis of experimental results and simulation results are similar, and provides a reference for the study of predrying of wood-plastic raw materials.

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