This analysis was carried out to present the distribution of energy demand for air heating, air cooling and technology equipment for a warehouse through the year. The supplied energy is used to maintain the assumed temperatures in the rooms and for the needs of technology. During the work, the calculation model of the building was prepared and imported into the calculation program. The simulation was based on the planned building parameters (partitions structure, dimensions, technology) taken from the architectural executive design. Several versions of the structure of the construction and technical equipment have been analyzed. The obtained results show differences in the formation of energy demand and indoor room conditions.
The article presents the possibility of using exhaust air from ventilation system to increase the efficiency (SCOP, COP, SEER and EER) of commonly used air conditioners with the function of a heat pump. These types of devices are very popular both in residential and in public buildings. The topic discussed in the article is very important, because the widespread increase of the energy efficiency of these devices significantly influences national electricity consumption. The possibility of increasing their efficiency by directing the exhaust air from the ventilation system to the heat exchanger of the air conditioner outdoor unit has been analysed. It has been shown that the use of the simple design solution described in the article allows for a significant increase of the efficiency of these devices (seasonal efficiency even up to 35% at 100% share of exhaust air), reducing the energy consumption and increasing their capacity and operation range. By increasing the share of exhaust air it is possible to ensure year-round operation of the device and even 100% coverage of heat demand.
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