| Room air conditioner in China 2015 annual sales volume of over sets,accounting for 90 of global production,ranking first in the world.At present,the domestic air conditioner market retains nearly 500 million units,about 30% of the total electricity consumption.Nowadays environmental protection,energy efficiency is the dominant idea of global sustainable development,countries around the world are also getting higher and higher requirements for the energy efficiency of air conditioning,how to improve product performance and energy efficiency,to maintain market share and guide position has become the primary task of the air conditioning enterprises of China..therefore,to develop more energy-efficient,air conditioner,from the new technology,new technology,new materials,effectively enhance the air-conditioning energy efficiency research is increasingly urgent and important.To our room air conditioner industry and the global market development has important significance.The heat pump type air conditioner products accounted for than has been nearly 80% and increasing,China’s air-conditioning popularity rate highest in the Yangtze River Basin,the winter low temperature and high humidity environment makes air conditioning heating operation more easy to frost.Frost layer thickening will make air conditioning heating capacity attenuation,and besides the defrosting process will cause a substantial decline in room temperature,seriously affect the indoor environment comfort.Therefore,considering the comfort and energy saving,heat pump frosting and defrosting is the urgent need to improve and optimize the project.Based on the existing model test and Simulation of the seek on the basis of the existing effectively improve energy efficiency and except cream comfort low cost improvement program: optimization outdoor unit heat exchanger refrigerant distribution,the environmental protection refrigerant R32,adopts a micro channel heat exchanger to improve energy efficiency;research of thermal non-stop defrosting optimization model.Using the appropriate method can increase the maximum APF 6.02%.Heat storage in addition to the frost pattern of indoor air temperature fluctuations during the period from the traditional four way valve to 8.1 degrees down to 3.1 degrees. |
