Xi Chen This email address is being protected from spambots. You need JavaScript enabled to view it.1,2, Jiangyi Li1, Xiangxiang Zhang1, Shuai Liu1, Kapnang Franky1, Wanwan Li1, Wenfeng Bi1 

1 School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450001, Henan, China
2 Key Laboratory of Heating and Air Conditioning, The Education Department of Henan Province, Zhengzhou 450007, Henan, China


Received: November 5, 2020
Revised: February 10, 2021
Accepted: March 10, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.4209/aaqr.200620  

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Cite this article:

Chen, X.,  Li, J., Zhang, X., Liu, S., Franky, K., Li, W., Bi, W. (2021). The Effects of Warm Air Heater on the Dispersion and Deposition of Particles in an Enclosed Environment. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.200620


  • The particle deposition in a storeroom with a warm air heater is probed.
  • The particle concentrations and some parameters in eighteen cases are measured.
  • The effect of the warm air heater on indoor particles is presented.


The warm air heaters are now widely used in enclosed environments without central heating systems or as auxiliary heating facilities. However, the effect of warm air heaters on indoor air quality has received scant attention with insufficient available data. Therefore, the present work deals with an experimental investigation of the particle concentration, air velocity, temperature, and relative humidity in a storeroom with a warm air heater. The influences of the warm air heater on the dispersion and deposition of 0.3, 0.5, 1.0, 3.0, and 5.0 μm particles in eighteen cases with different heating powers and air blowing directions are discussed. The results indicate that the deposition rates of particles are higher in cases with the working warm air heater. We also found that the particle decay rate loss coefficients increase with rising output powers of the warm air heater, decrease when the distance from the air outlet increases and can be further influenced by air blowing directions.

Keywords: Particle concentration, Warm air heater, Particle decay rate loss coefficient, Particle dispersion, Particle deposition

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