Numerical Simulation And Optimization Of Ward Air-conditioning Based On Individual Needs

With the increasing yearning of people for a better life,medical health has become an important livelihood concern.In addition to basic medical security,patients’ requirements for medical security have also been continuously improving on the quality of the medical environment.The ward shared by multiple people is the most common form of ward in the inpatient department.There are common conflicts among patients due to the use of air conditioning,which has become one of the triggers that affect the patient’s recovery experience and the conflict between doctors and patients.In order to alleviate the contradiction caused by the use of air conditioners in the same ward,this thesis designs a variety of ward air conditioning forms that meet the individual needs of patients,and uses FLUENT simulation software to analyze the indoor thermal comfort parameters of individual air conditioning schemes,and aim at the temperature field of each scheme carry out research on speed field,air flow line diagram,temperature uneven coefficient,wind speed uneven coefficient,etc.,to optimize the personalized air conditioning scheme of the ward,and provide a reference for the air conditioning design of modern medical buildings.First of all,the thesis takes the actual double room ward of the hospital as a reference,and compares and analyzes a variety of air-conditioning terminal forms to determine the fan coil and fresh air independent system as the research object.The air-conditioning load is calculated in detail for the selected standard double ward,which is the indoor airflow organization value.The setting of simulated boundary conditions provides a basis for the simulation results to be closer to the actual operating conditions of the ward.Secondly,based on the traditional fan coil unit and independent fresh air system,the thesis carries out the numerical simulation of summer cooling conditions,and carries out comparative research on the high,medium and low air volume conditions.The simulation results show that under the three working conditions,there is a phenomenon of the patient’s head and feet being cold,and there is a temperature difference and a difference in wind speed between the two patients,resulting in different thermal comfort,which is likely to cause differences in the demand for air conditioning;stroke volume conditions The obtained temperature distribution is the most uniform,the coefficient of unevenness of wind speed around the two patients is the smallest,and the thermal comfort difference between the two patients is the largest under high air volume conditions.Finally,the thesis carried out the design and numerical simulation of the single-coil double-vent type and double-coil type personalized air conditioner.The paper compares and analyzes the temperature field,the velocity field,and the air flow diagram of the two working conditions in which two patients use air conditioning at the same time and only one patient uses air conditioning.The simulation results show that when two patients use air conditioning at the same time,the two solutions can reduce the temperature difference and wind speed difference between the patients,and make the patients feel similar thermal comfort;the dual-coil side air supply solution can reduce the temperature difference and wind speed difference between the patients.Improve the thermal discomfort of patients with hot head and feet,but the single-coil type cannot;when only one patient uses airconditioning,both solutions can meet the patient’s personalized air-conditioning needs;double-coil side air supply The program has the best air supply effect,which can form a temperature difference of about 3°C between the non-air-conditioned area and the airconditioned area,and the temperature distribution in the working area around the two patients is the most uniform,which has a better thermal comfort effect.The paper compares and analyzes the temperature and wind speed unevenness coefficients of the traditional air-conditioning scheme in the ward and the double-coil side air supply personalized air-conditioning scheme.The results show that the temperature and wind speed unevenness coefficients of the working area around the patient are smaller in the double-coil side air supply scheme.It can alleviate the problems of patients with hot head and cold feet and uneven temperature distribution.