Research On Performance Of Modular Temperature-adjustable Energy-saving Decorative Board

With the development of society,people’s requirements for the living environment are also gradually increasing.From the basic requirement of sheltering to the pursuit of comfort in the indoor environment,there is a market demand for corresponding HVAC technology.The existing cooling and heating systems are mostly provided with a single cooling or heating function,and less research is conducted on direct refrigerant power supply.This article proposes a modular thermostat energy-saving decorative plate(hereinafter referred to as thermostat decorative plate),which not only can meet the requirements of a set of equipment heating in winter,summer cooling,but also help to save the interior space,beautify the appearance of indoor cooling and heating equipment.In addition,the system uses air source heat pump as a source of heat and cold,making full use of renewable energy like air energy.Compared with traditional coal-fired heating methods,the system has high energy utilization and low carbon emissions,and has the advantages of energy conservation and environmental protection.Through theoretical analysis,experimental testing and computer simulation,the performance,structure and operation mode of the temperature-adjusting decorative board were analyzed and optimized.The heat transfer analysis of the temperature-adjusting decorative plate is specifically divided into three parts:the heat exchange between the refrigerant and the copper tube,the heat transfer inside the radiation plate,and the heat exchange between the radiation plate andthe indoor environment;The composite heat transfer coefficient of the surface of the temperature-adjusting decorative plate with the indoor air are obtained through theoretical calculations.Experiments respectively measured the indoor air temperature of the building with the temperature-adjusting decorative plate in summer and winter.The results show that the temperature-adjusting decorative plate can fully meet the requirements of indoor winter and summer temperatures at the test site,and the indoor temperature is distributed uniformly in the vertical direction.The experiment has also tested the crew operating in three different ways(mode one: 8:00-12:00;14:00-18:00;mode two: 8:00-18:00;mode three:8:00-11:00;14:00-17:00),to get indoor air temperature and power consumption,it is results that the indoor air quality under the three operating modes can reach the temperature requirements,but the power-saving of third mode is at least 20%,which can be seen that controlling system running time on the premise of meeting the indoor environment is of great significance for energy saving,and if the equipment is selected too large,it will cause energy waste.After the accuracy of the model was verified by experiments,the influences of medium temperature,copper tube position and tube spacing on the surface temperature of the temperature-adjusting decorative plate were simulated respectively.The simulation results showed that the surface temperature of the temperature-adjusting decorative plate changes rapidly when the copper tube approaches the air side.When the position is close to the insulation side,the plate surface temperature is more uniform;the difference between the plate surface temperature and the medium temperature increases as the tube spacing increases.Through computer simulation,the cooling/dissipating scale of the temperature-adjustable decorative plate per unit area under different tube spacings,different media temperatures,and different indoor air temperatures(Appendix 1)is provided,which provides basic data for the temperature-adjustable decorative plate during the cooling and heating design process of buildings.