Thermal barrier efficiency
author:
WŁADYSŁAW SZAFLIK
ORCID ID:
0000-0003-3767-8766
No:
06/2023 Instal p.15-18
DOI:
10.36119/15.2023.6.2
The problem of reducing primary energy consumption is increasingly discussed in the technical literature. Relatively
large amounts of energy are used to heat rooms. In the case of resources of much cheaper waste energy or energy
from renewable sources with a temperature lower than required in the rooms, the so-called “thermal barrier” placed
in external walls can be used to reduce heat transmission losses. The thermal barrier is a vertical wall element with
pipes with a heating medium installed in the partition, with a temperature lower than the temperature in the room but
higher than that resulting from the heat transfer through the partition without a barrier. In the paper, on the basis of
the developed model of a partition with the thermal barrier, for the assumed input values and the partition’s
surroundings, the efficiency of the thermal barrier was defined and determined. For the selected case, the paper presents the results of the analysis of the impact on the efficiency of the thermal barrier of half the distance between
the pipes of the barrier and the thermal conductivity coefficient. The results of the calculations are presented in the
graphs. The received conclusions regarding the impact of these parameters on the efficiency of the barrier confirmed
the expectations. As the distance between the pipes increases, efficiency of the barrier decreases, and as the product
of the thickness and conductivity of the barrier material increases, its efficiency increases. Knowledge of the barrier
efficiency will allow to easily determine the average barrier temperature and the amount of heat given off by the
room and by the heating medium flowing in the barrier. It should be noted that the total amount of heat given off by a wall with a thermal barrier is greater than through a wall without a barrier, but the costs of heating the room may be lower.
Keywords:
About Authors:
prof. dr hab. inż. Władysław Szaflik, https://orcid.org/0000-0003-3767-8766 – Zachodniopomorski Uniwersytet Technologiczny,
Wydział Budownictwa i Inżynierii Środowiska, Corresponding adress: Wladyslaw.Szaflik@zut.edu.pl