Thermal environment in rural primary and secondary school classrooms in Gansu province in winter

Taking twelve typical classrooms of five rural primary and secondary schools as examples, measures the indoor thermal environment parameters in winter, and conducts the subjective questionnaires on thermal comfort among 366 students. The results show that the predicted and measured thermal neutral temperature is 15.1 ℃ and 14.7 ℃, respectively, and the preferred temperature is 15.6 ℃. The thermal comfort temperature range accepted by 90% students is 11.9 to 17.1 ℃, which is lower than that in codes. The cold climate conditions, students’ dressing habit, psychological expectation and physical characters make students have a strong adaptability to cold environment. Adaptive PMV model (aPMV) can be used to predict students’ mean thermal sensation.