Optimization of Building Air Conditioning Processes Applying Free Cooling

Purpose of research is to carry out an applied research of the thermal behaviour of the production premise of an industrial building and to develop air conditioning processes, including the search for an expedient circuit design for conditioning and increasing the effectiveness of the system by using the cold outdoor air.
Methods. In the work, based on the results of the energy audit, a technique for calculating the flows of harmful emissions in the production premise in the Production mode was developed and the thermal loads of the objects of the study were determined to achieve the set objectives. Possible options for air processing by technological conditioning systems including the minimization of energy costs are analyzed. For the assimilation of excess heat in the warm season and a rational choice of the air treatment process in order to save thermal energy consumption, techniques of air treatment with and without heating are proposed. In the cold season, it is proposed to carry out air conditioning using cold outdoor air. The versatility of the technique makes it possible to determine a process feasible in real conditions, including adjusting the processing scheme, in which air preheating is required.
Results. The result of the research work is the development of a number of engineering and technical solutions to ensure the energy efficiency of the engineering system and improve the consumer quality of the research objects.

Conclusion. Implementation of the developed measures for thermal protection of the research object and the use of energy-efficient engineering solutions will allow achieving the following results: to improve the consumer quality of buildings, to bring the parameters of the internal microclimate to the standard value; to extend significantly the service life of enclosing structures, to ensure the quality of the air intended for the technological process with a high degree of accuracy, to ensure energy savings for air conditioning through the use of the cold outdoor air; to maintain a minimum cooling temperature by mixing outdoor and recirculated air without the risk of frost formation on the surface of the heat exchanger and the formation of ice.

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