Simulation And Analysis Of Indoor Thermal And Humid Environment Under Independent Control Of Temperature And Humidity

In recent years,with the improvement of people's living standards,people have not satisfied the current indoor air quality,and improving indoor comfort is an important issue to be solved urgently.From the simple temperature and humidity demand to the demand for air quality,the conventional air conditioning system has higher energy consumption and cannot solve indoor air quality and energy consumption problems.Therefore,the temperature and humidity independent control(THIC)air conditioning system is energy-saving.Its application in construction has gradually increased and has been widely used.However,the research on indoor thermal comfort law of air conditioning systems with independent control of temperature and humidity in China is lacking.The passive heat floor of a unit adopts the ground source heat pump system as the cold and heat source,and the air conditioner terminal device is the fan coil and fresh air system.The temperature and humidity are independently controlled.The indoor temperature is controlled by the fan coil system,and the indoor humidity is passed through the new fan unit.To control.Taking the passive building as an example,this paper simulates and tests the indoor thermal and humid environment of the building,and gives the distribution of indoor temperature and humidity distribution,velocity distribution and other related parameters.The traditional air conditioning system adopts the method of heat and moisture coupling to eliminate the residual heat and moisture in the room.This paper first reviews the research results in related fields at home and abroad,summarizes several major shortcomings of the traditional air conditioning system,and briefly introduces the THIC air conditioning system.Great features,and proposed factors and evaluation indicators that affect indoor thermal comfort,as well as indoor air quality evaluation indicators.Then,through the field test method,the temperature,humidity and wind speed values of each measuring point in the summer room of Room 601 of the passive building are obtained under the independent temperature and humidity control conditions,and the variation law of each value is analyzed,and the measured value and the following analog value are compared.I found that the data is basically consistent.Finally,an office simulation model was built with Airpak software.The finite volume method was used to discretize the equations by meshing,and the zero-equation turbulence model was used to simulate the equations.Three conditions to simulate the air conditioning system change law of indoor thermal environment such as indoor temperature,humidity,air velocity,air age and PMV-PPD of distribution,to verify the THIC comfort air conditioning system is superior to the conventional air conditioning system,and gives the THIC best airflow organization form of air conditioning system of fresh air system and dry fan coil best air supply velocity.In this paper,through field test and numerical simulation method,the temperature field,humidity field,velocity field and air age of the air conditioning system are controlled independently.The design scheme of THIC air conditioning system is optimized,and the air conditioning system is selected for different work places.Provide theoretical basis and reference.