Research On Thermal Environment Characteristics Evaluation And Energy Saving Potential Of Air-conditioned Room Based On Temperature Correction Model

Residential buildings in hot summer and cold winter areas have long used air conditioners to adjust and improve the indoor thermal environment.Up to now,setting temperature has been the main basis for controlling the environment of an air-conditioner room,but because of the difference between setting temperature and the ambient temperature of the working area of room with the air conditioner,it may result in a decrease in the comprehensive performance of comfort and energy saving.Therefore,by understanding the status and laws of the thermal environment of the air-conditioning rooms in residential buildings in hot summer and cold winter regions,the thermal environment characteristics are used to establish the model of thermal environment state values and distribution characteristic values,and on this basis,the air conditioning rooms in hot summer and cold winter regions are heated.Comprehensive guidance of comfort and energy saving,it is a meaningful thing to put forward a certain air-conditioning control strategy.In this paper,laboratory tests,field tests of residential air-conditioned rooms,numerical simulation,energy consumption simulation and other methods are used to conduct an in-depth study of the thermal environment law of air-conditioned rooms in hot summer and cold winter areas,and point out that the area has improved the heat of the air conditioning environment great possibilities for comfort and energy saving.The research content mainly includes the following aspects:(1)Through the combination of laboratory tests,field residential building tests,and numerical simulation of air-conditioned rooms,the main types of air-conditioning used in residential buildings,seasons of air-conditioning use,typical installation locations of different air-conditioning,size of air-conditioned rooms,wind speed and many other factors Starting from the setting temperature as a medium,the influence of various factors on the flow field characteristics of air-conditioned rooms was discussed and analyzed.(2)This paper scientifically introduces the temperature stable state value and distribution characteristic value(vertical temperature difference,temperature uniformity,maximum horizontal temperature difference)of the air-conditioned room to conduct an in-depth analysis of the room thermal environment,and discusses the temperature stable state value and distribution characteristic value of the air-conditioned room(Vertical temperature difference,temperature uniformity,maximum horizontal temperature difference)and the setting temperature.It systematically summarizes the current situation and characteristics of the thermal environment of air-conditioning rooms in residential buildings in hot summer and cold winter regions.(3)Based on the characteristics of the thermal environment,the correction relationship model between the setting temperature of different types of air conditioners and the temperature,vertical temperature difference,and temperature uniformity of the room working area was established.(4)Based on the temperature model,with the thermal comfort index PMV and the annual energy consumption index of the air-conditioned room work area as the guide,the thermal environment evaluation and energy-saving potential analysis and comparison of five typical types of air-conditioner rooms were conducted.It is found that model-based temperature control measures can not only ensure the thermal comfort of air-conditioned rooms in residential buildings,but also the theoretical deviation of energy consumption can reach about 40%.