Analysis and Optimization of a VRF System in a Residential Building Using the Bosch AirSelect Software Tool

Abstract

The paper presents the analysis and optimization of a variable frequency (VRF) air conditioning system for a single-family residential building in Belgrade. Special emphasis is placed on the theoretical foundations of the dimensioning of freon pipelines, the importance of proper equipment selection and the application of software tools in the design process. The calculation and validation of the system were performed using the Bosch Air Select software, which enabled checking of capacity, pipeline length and height differences. The results of the analysis showed a slight overload of the outdoor unit, based on which optimization of the system was proposed by selecting a more powerful outdoor unit. The techno-economic analysis determined that the proposed solution provides greater reliability, more stable operation and improved energy efficiency of the system in long-term operation.