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In recent years, increasing global warming has caused frequent heat waves, bringing continuous high temperatures and high humidity, and the resulting impairment of human cognitive performance has become a growing concern in society. In order to explore the response pattern of human cognitive performance under humid-heat exposure, five types of continuous cognitive tests were conducted under humid-heat environmental exposure at temperatures of 32, 35, 38, and 41 ℃, respectively, and relative humidity of 70%, during which the characteristics of the cognitive test results (mean reaction time and mean correctness) of 14 male subjects were observed in response to the environmental temperature. The cognitive tests were uninterrupted during the exposure until the subjects refused to continue the experiment. The results showed that: the subjects' mean reaction time to process the cognitive task increased with increasing ambient temperature, and the mean correct rate decreased with increasing ambient temperature; during the exposure time, the mean reaction time increased sequentially in the first 3 tests and then decreased in the 4th and 5th tests; whereas, the mean correct rate continued to decrease in the first 3 tests and increased rapidly in the 4th and 5th tests; furthermore, it was observed that the relative cognitive In addition, it was observed that relative cognitive performance decreased with increasing ambient temperature, but the rate of decrease slowed down when the ambient temperature was higher than 35 ℃. Relative cognitive performance showed an approximate U-shape distribution over the exposure time, and the higher the ambient temperature, the more the lowest point of the U-shape curve corresponded to the earlier time. This study provides a potential solution for the assessment of cognitive performance in hot and humid environments.

Recently, the 49th Geneva International Exhibition of Inventions opened, more than 1,000 invention projects from nearly 100 countries and regions made a stunning appearance. Haier Intelligent Building, as a representative of the exhibition, won one gold, three silver and four awards!

Traditional thermal comfort standards do not take into account the thermal comfort needs of China's continuously growing overweight or obese population, which may have important implications for human comfort and building energy efficiency. This paper explores the differences in subjective and physiological responses of people with different body mass index (BMI) in a cooler environment. The results show that: the average skin temperature of high BMI people is significantly lower than that of low BMI people and decreases with decreasing temperature; the metabolic rate of high BMI people is lower than that of low BMI people in a cooler environment, which leads to a higher percentage of thermal dissatisfaction than that of low BMI people, even though there is no significant difference; and it is necessary to predict thermal sensation separately for different BMI people.

During the same period of "green new life" - 2024 the United States of America building science and technology building energy-saving renewal solutions conference has also become a major highlight of the exhibition site, experts and big names gathered together to discuss the new path of building green reform, help buildings renewed new life.