Improving the energy efficiency of the air conditioning system

The relevance of the study is due to the high-energy consumption of precision air conditioning units.

This study examines the issue of automatic regulation and control of precision-type air conditioning systems and its interaction with thermal processes occurring in the serviced room. Based on the design of both existing and newly introduced air conditioning systems in a building, it always assumes one or another optimization of the engineering decisions taken. However, this problem has recently become particularly important due to a sharp increase in the requirements for materials and the energy intensity of ACondS and the degree of security of the specified parameters of the air environment under variable external and internal influences. In addition, a significant expansion of the choice of equipment for ACondS, which in some cases leads to difficulties in finding the optimal option, also requires new approaches to the calculation, design and operation of ACondS and their automatic control systems.

The existing methods for calculating and analyzing the state of the air environment in a room have a number of drawbacks, since they either do not take into account some significant factors affecting the heat and humidity balance of a room, or are cumbersome and therefore unsuitable for engineering practice. In addition, both of them do not yet reflect the relationship between the dynamic characteristics of technical means of automation and AContS devices with the processes in the room.

The calculation of the non-stationary thermal regime of the room, taking into account the automatic control of the ACondS elements, is complicated by the relationship and mutual influence of transient physical processes both in the room itself and in the ACondS elements serving it and in automation equipment.

Therefore, it is necessary to develop such methods for calculating the thermal regime of a room, ACondS and AContS, which would be relatively simple to use and at the same time take into account to a sufficient extent the relationship between the processes occurring during the ACondS regulation.

Another important factor is the growing requirements for the annual reduction of energy resources for state-owned enterprises, as there is a constant increase in the cost of heat and electricity consumed by the engineering systems of residential and public buildings, which leads to the need to optimize design solutions and control algorithms for air conditioning and ventilation systems. According to various studies, the energy demand for air conditioning and ventilation, while providing standard air exchange, is more than 60% of the total energy consumption. The analysis of possible solutions should be based on the results of solving the optimization problem of the objective function, which is a convolution of operating and capital costs.

In this regard, this article is aimed at revealing the possibilities of regulating the fan units of the air conditioning system.

The main approach to the study of this problem is the development of quality control systems for air conditioning systems.

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