1. See supplementary material at https://techholod.com/blog/sovety-pokupatelyam/teplovaya-zavesa/ for the advantages of an air curtain.
2. Experimental study of the three-dimensional flow field in cross-flow fans
3. S. Darmawan, A. I. Siswantara, B. Budiarso, A. Daryus, A. Gunawan, A. Wijayanto, and H. Tanujaya, Journal of Engineering and Applied Sciences 10(16), 7086–7091 (2015).
4. M. E. Diskin, Ventilation, Heating, Air Conditioning, Heat Supply, and Building Thermal Physics 7, 58–65 (2003).
5. The effectiveness of an air curtain in the doorway of a ventilated building