| In hot-summer and winter-cold area,the conditions of comfort is poor if don't use HVAC equipment during summer and winter.This region has become one of the most electricity load area in China.It is urgent to require this zone to carry out building energy conservation actions.Hospital is an important part of China's public buildings.Expansion of the hospital to improve the medical environment because people's demand for medical services grow rapidly.The increase in the size of the hospital and the improvement of the medical facilities have made the hospital's energy consumption level have increased greatly.Data show that hospital building energy consumption accounts for about 27% of the total hospital energy consumption.How to protect the comfort of the hospital environment,but also reduce the energy consumption,has become an important issue in hospital building energy efficiency.First of all,this article based on a hospital building renovation project in Shanghai,the actual parameters of the project were investigated and summarized.In order to get the objective data of the hospital outpatient staff distribution density,a survy of personal acesss was conductd.Then use energy consumption simulation software eQUEST to modle this hospital building.Analyse the energy saving potentional for the problems existing on outer envelope.Feasible energy conservation methods was designed for different energy saving conditions,based on the original building,the external walls,the roof and the outer window are used as variables,the simulation of the building's annual building energy consumption were conducted respectively,economic analysis asls made to get the optimal solution for each transformation,the ultimately program was determined.Relative to the original program,the annual energy saving efficiency of air conditioning can reach 26.6%.At the same time,also use DeST to simulate the energy consumption of the project,the annual energy saving efficiency of air conditioning can reach 25.3%.And compared with the eQUEST simulation results,the reasons for the differences between the simulation results are analyzed.Computer energy simulation software can facilitate the analysis of building energy consumption,but the simulation results of the software can not be completely accurate,still need to consider the difference between simulation software and actual engineeringSecondly,the transformation of building air conditioning systemand lighting system are analysised.Conducted a questionnaire survey of he existing small area of the building air conditioning market,concluded the VRV system is gradually accepted by users.In office use,the VRV system is still the first choice of majority of people about 90.32%.Then analyze the cooling and heating power consumption of the air conditioning system.In this project,energy saving of VRV system can be up to 63%.Finally,anslyzed the transformation of the building lighting system,the main transformation is replace the light with LED lighting,Energy saving rate is 57.8% and the energy saving efficiency is considerable.At the end,investigates energy consumption of 33 large-scale hospital buildings in hot summer and cold winter area,and carries out statistical processing on the survey data,verifies its normality and confirms its rationality.The power consumption index of the building air conditioner is replaced with the energy consumption index of the air conditioning in the research data and the result is 192KWh/(m2·a).Take the quota level is 0.5,that is about 50% of the building to meet the quota standard,and the construction energy consumption quota is obtained as the reference data of the building energy consumption quota. |
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