Exergetic Analysis of a Building as a Key Element of a Heat Supply System

Abstract

the study of the complex influence of weather and climatic factors and their variability on the needs of en-ergy and exergy when creating thermal comfort in a house with various engineering and architectural charac-teristics is carried out. It is confirmed that even for houses with relatively low thermal characteristics built in accordance with regulatory documents, the role of solar radiation in the formation of the heat balance, espe-cially at the beginning and end of the heating season, is important. Studies showed that due to the combined influence of external meteorological factors, with the improvement of the thermal characteristics of houses, the correlation between the energy demand for creating a favorable microclimate and the outdoor air tem-perature significantly worsens. It is determined that in this case, the value of the approximation reliability decreases from 1 (with a linear dependence) to 0.55 and lower (with the maximum possible improved ther-mal characteristics of the house today). This position significantly corrects the operating modes and charac-teristics of the ST. In particular, this makes it necessary to improve the automatic control system of ST. And this, in turn, increases the investment component of the system. A method was developed for calculating exergy needs to create thermal comfort inside the house by taking into account, using the probability theory, the influence of the random nature of meteorological factors within the heating period, on the basis of which, in the conditions of the region, it is shown and calculated that when determining the seasonal exergy needs for the heat supply of the house, the use of a stationary approach leads to an underestimation of the results by 12...28% compared to the dynamic approach

Energy efficient indoor wireless communication techniques based on BLE technology

“…Therefore, a debugging software for the PC end needs to be designed for system testing purposes. The PC software is intended to monitor the information exchange status between the master and slave devices, and facilitate operation and observation [20][21][22][23].…”

Design of smart input devices

“…If the MPU6050 is placed between the voltage regulation area and the Bluetooth module, there will be too many vias, not to mention the difficulty of wiring, and it will also occupy a large area of the circuit board, which may even increase the area of the circuit board. , if it is placed on the bottom layer, it will not only reduce the transmission distance of the wire, but also reduce the number of via holes, indirectly reduce the area of the circuit board, and bring convenience to users [20][21][22].…”