Study On The Effect Of Heating Terminal Form On Indoor Thermal Environment

Nowadays,people's demand for ambient air quality is higher and higher.Indoor air quality also affects people's work efficiency and health.As far as winter heating is concerned,the end of the heating system is the link to prepare the required environment directly.The research on the end of the heating is of practical significance to the suitable choice of the form of the heating end for the single building and small office buildings.First of all,this paper introduces three kinds of common heating end forms in cold regions,and analyzes their working principles and heating characteristics briefly.Secondly,with the help of Airpak software,three kinds of room models with different heating terminals are built,and the corresponding thermal environment is simulated.Combined with the results of software calculation,the indoor temperature distribution,velocity distribution and PMV-PPD index under different heating modes are compared.The results show that the room temperature distribution,velocity distribution and PMV-PPD index of floor radiant heating are better than those of the other two kinds of terminal heating,and the comfort degree of floor radiant heating is the highest.Finally,the temperature response speed of various terminal heating rooms is also studied.The research direction is studied by field measurement.This paper makes a survey on the 310 room of the science and technology building in our school.The postgraduate study room is equipped with three kinds of heating end forms:radiator heating,floor radiant heating and fan coil.Based on the test data,the relationship between the temperature change in different heating terminals and the opening and closing of heating system is studied.The results show that after the heating system is opened,the fan coil heating room can be quickly reached to the indoor thermal comfort.The slowest is the room with floor radiant heating;when the system is closed,the room cooling is the fastest in the room which is heated at the end of the fan coil,and the room with the ground plate radiant heating can be maintained.An indoor thermal environment that can be accepted for a long time.