Study On The Effect Of Indoor Heat Exchanger On The Performance Of Refrigerant Radiant Air Conditioning System

At present,with the development of the global economy,the population is also increasing,and the problem of energy shortage is becoming more and more serious.As air conditioning accounts for a relatively large part of global energy consumption,energy-saving transformation is imperative.On the other hand,the traditional air conditioner has a series of problems,such as low energy efficiency,loss due to temperature and humidity coupling processing,air supply noise,and blowing sensation.Based on the above problems,this paper proposes a refrigerant radiant air conditioning system based on a metal capillary network.The system uses an innovative metal capillary network as the terminal equipment of the air conditioner,and the metal capillary network is directly laid on the ground,wall or ceiling of the building To realize the integration of the terminal of the air conditioner and the building.The metal capillary network and the envelope structure form a huge radiation heat exchange surface,which greatly improves the system efficiency.The refrigerant R410 A is directly circulated in the pipe network,eliminating the heat exchange link between water and refrigerant,and reducing energy consumption.Through the heat transfer analysis of the wire mesh and the comprehensive evaluation of the refrigerant R410 A,the state parameters of the refrigerant in the circulation process are obtained,and the compressor,condenser,expansion valve,and wire mesh head of the system are replaced to design Calculation.The simulation environment selected a room of the member unit on the second floor of the office building of the Green Building Committee of Shenyang City.Wen used AMESim software to model and simulate the system,converting the indoor metal wire mesh at different laying positions,different plastering thickness,and different ground laying under the material,the cooling coefficient,the surface temperature of the laying surface,the size of the conversion range per unit area,and comparative analysis of the system performance and cooling effect under different working conditions.The simulation guarantees that the metal capillary network has the same laying area and the same tube spacing.Through a series of comparative analysis,the study found that:(1)The system performance and supply when the indoor metal capillary network is placed on the ceiling is10 mm thick,and when it is laid on the ground,the cooling effect is better.(2)When the laying position of the metal capillary net is the ground and the floor laying material is the floor,the smaller the thickness of the plastering layer,the better the system performance and cooling effect it is.(3)When the laying position of the metal capillary net is on the ground,the thickness of the ground and plastering layer is 10 mm,and the ceramic tile is used as the ground laying material.The system performance and cooling effect are better than floor.(4)According to the five working conditions simulated in this paper,when the indoor metal capillary net is laid on the ceiling,When the thickness of the plaster layer is 10 mm,thesystem performance and cooling effect are better than the four types of floor laying conditions.Compared with traditional air-conditioning indicators,the refrigerant radiant air-conditioning system based on wire mesh has improved many of the disadvantages of traditional air-conditioning,and has a high energy efficiency ratio and low operation and maintenance costs.The first-level advantage has a wider scope of application and has huge development potential and value.