Abstract
A dynamic thermal environment meeting human health requirements can be created with natural wind simulated by artificial means. Simulating natural wind can provide an innovative air-conditioning mode that reduces the energy consumption of air-conditioning systems and avoids the body-resistance decrease and body-temperature regulation mechanism failure that limit the traditional steady air-conditioning mode. In this paper, new methods for simulating natural wind are presented in which the controllable fluctuation of mechanical wind is improved to make its characteristics more similar to those of natural wind. Experiments carried out to verify the effectiveness of these mechanical-wind methods are reported. A self-operated air supply device improving the fluctuation of the air supply is proposed, which can increase the value of the characteristic parameter β (the negative slope of the double-logarithmic power spectrum curve) to 1.2 when the wind speed is greater than 1 m/s. With a second proposed device based on the gas-washing process, this value can reach 1.4 when the wind speed is greater than 0.5 m/s. In summary, this paper provides simple solutions for simulating natural wind.
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