Heating,ventilation,and air conditioning(HVAC)systems account for one-third of the total energy consumption in office buildings.The use of airflow measurements to control the operation of HVAC systems can reduce energ...Heating,ventilation,and air conditioning(HVAC)systems account for one-third of the total energy consumption in office buildings.The use of airflow measurements to control the operation of HVAC systems can reduce energy consumption;thus,a sensor capable of monitoring airflow in a duct system is critical.Triboelectric nanogenerators(TENGs)can be utilized as self-powered sensors in airflow-driven TENGs(ATENGs)as self-powered sensors.By employing ferroelectric materials and surface modifications,the surface charges of TENGs can be increased.In this study,fibrous-mat TENGs were prepared using ferroelectric materials consisting of poly(vinylidene fluoride-co-trifluoroethylene)(PVDF-TrFE)and polyamide 11(nylon-11).And these materials were subsequently investigated.Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)was added to PVDF-TrFE to enhance the ferroelectric crystalline phase.X-ray diffraction analysis revealed that this incorporation affects theβphase.In addition,the surface of nylon-11 was modified using the electrospray technique for post-treatment,thereby improving the interfacial adhesion between the fibers.These materials were then utilized in fibrous-mat ATENGs(FM-ATENGs)to demonstrate their practical application.The FM-ATENGs can be effectively used in an Arduino airflowcheck sensor,showcasing their potential for application in HVAC systems,to enhance airflow control and energy efficiency.展开更多
基金supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP)grant funded by the Korean government(MOTIE)(grant number:20202020800030).
文摘Heating,ventilation,and air conditioning(HVAC)systems account for one-third of the total energy consumption in office buildings.The use of airflow measurements to control the operation of HVAC systems can reduce energy consumption;thus,a sensor capable of monitoring airflow in a duct system is critical.Triboelectric nanogenerators(TENGs)can be utilized as self-powered sensors in airflow-driven TENGs(ATENGs)as self-powered sensors.By employing ferroelectric materials and surface modifications,the surface charges of TENGs can be increased.In this study,fibrous-mat TENGs were prepared using ferroelectric materials consisting of poly(vinylidene fluoride-co-trifluoroethylene)(PVDF-TrFE)and polyamide 11(nylon-11).And these materials were subsequently investigated.Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)was added to PVDF-TrFE to enhance the ferroelectric crystalline phase.X-ray diffraction analysis revealed that this incorporation affects theβphase.In addition,the surface of nylon-11 was modified using the electrospray technique for post-treatment,thereby improving the interfacial adhesion between the fibers.These materials were then utilized in fibrous-mat ATENGs(FM-ATENGs)to demonstrate their practical application.The FM-ATENGs can be effectively used in an Arduino airflowcheck sensor,showcasing their potential for application in HVAC systems,to enhance airflow control and energy efficiency.
