Abstract
This paper focuses on energy consumption for heating single layer building envelopes, used in conditions of intermittent heating in different physical and mechanical and thermophysical parameters of construction materials. The authors investigated several variants of single-layer building envelopes, used frequently in building practice, with different density and coefficients of building materials thermal conductivity. For each variant of a building envelope heat leakage and time spent on heating were calculated. Heating time was calculated by both exact and approximate analytical method. Then the researchers draw a graphic dependence of energy consumption on the density of the material taking this computational data as a basis. Further analysis showed that building envelopes made of lightweight aggregate concrete and porous concrete were the most energy efficient.This paper focuses on energy consumption for heating single layer building envelopes, used in conditions of intermittent heating in different physical and mechanical and thermophysical parameters of construction materials. The authors investigated several variants of single-layer building envelopes, used frequently in building practice, with different density and coefficients of building materials thermal conductivity. For each variant of a building envelope heat leakage and time spent on heating were calculated. Heating time was calculated by both exact and approximate analytical method. Then the researchers draw a graphic dependence of energy consumption on the density of the material taking this computational data as a basis. Further analysis showed that building envelopes made of lightweight aggregate concrete and porous concrete were the most energy efficient.
Highlights
At present, there are various construction and thermal insulation materials with differing physical and mechanical and thermophysical parameters used in the construction of country cottages [1-2]
This study focuses on the energy consumption for heating of one layer of the building envelopes used in the conditions of intermittent heating in different physico-mechanical and thermophysical parameters of building materials
When solving the task by the approximate analytical method, heating time is calculated according to the formula provided in the work of B.A
Summary
There are various construction and thermal insulation materials with differing physical and mechanical and thermophysical parameters used in the construction of country cottages [1-2]. For the construction of single-layered exterior walls of buildings and structures of individual buildings with bearing walls the following building materials are used: sand-lime brick, lightweight aggregate concrete [3], ceramic bricks[4], porous concrete, timber beams and no-fine lightweight aggregate concrete. Country houses are rarely used in the cold period of the year for energy cost savings. That's why dynamic characteristics of building envelopes should be taken into account when designing such buildings. Frequency-response analysis is referred to a task of nonstationary heat transfer through outer walls and floor structures
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