An air cleaner model with HEPA 11 filter inserts and a heat exchanger for heating the outside air in the recirculation section
DOI:
https://doi.org/10.46299/j.isjea.20240302.05Keywords:
air cleaner, recuperative heat exchanger, recirculation air cleaner, air purification, HEPA filterAbstract
This theoretical study considers the possibility of installing a section for heating the sanitary norm of air from the outside in an air purifier with HEPA 11 filter inserts. This section is planned to be placed in the middle of the recirculation part of the air cleaner. The estimated productivity of the recirculation part is taken as 800 m3/hour. This amount of air allows you to heat fresh air from the street using a heat exchanger without additional heating. Due to the recirculation of the cleaned air, without using energy for heating: a large amount of air cleaned in the recirculation chamber of the air purifier allows you to heat a certain volume of air from the street, while the temperature of the air recirculating in the room will decrease by only 2C, with initial temperature of 20C to 18C. Thus, the presented model will save more than 500W per hour for heating the outside air, while providing the room with the necessary amount of fresh air for breathing in the amount defined as the sanitary norm for the breathing of one person with compensation for the level of CO2 emissions by people in various controlled conditions during sedentary activities . In this case, the use of a filter insert of the HEPA11 type in combination with a high air exchange rate, which is more than 14 times, allows to obtain a minimum efficiency of cleaning the air in the room up to 95% of the initial pollution from respiratory and other pollutants of the air environment. The necessary parameters of the heat exchanger and overall dimensions of the heat exchanger itself have been determined. The operation of the device is designed for periodic operation: when a person is in the room, when there is a need for ventilation or exhaust air compensation from the operation of other low-power exhaust systems. All theoretical calculations need to be verified in natural conditions.References
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