Search academic texts

Information × Registration Number 0215U008326, 0114U001525 , R & D reports Title Development and research of energy-saving LED chandeliers with heat pipes for indoor lighting. popup.stage_title Head Nikolaenko Yurii E., Registration Date 24-12-2015 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 Object of study - saving LED system with heat pipes for domestic lighting. Purpose - development, manufacturing and thermal studies of physical model of energy saving lamps fundamentally new design for indoor lighting based on high power LED modules and heat pipes. In this research work the world's first new approach is proposed and implemented for building a strongly energy-efficient LED chandelier for indoor lighting of premises. The approach consists in the implementation of elements of the decorative frame of the chandelier in the form of high-performance heat transfer devices - heat pipes, and using LED modules as a light source. As a result, the LED modules power (24 W) and their emitted light output is increased by 2-3 times as compared to the case when 8-12 Watts direct replacement LED bulbs are used in the same chandeliers. This allows reducing the number of chandeliers required for indoor lighting by 2 to 3 times. At the same luminous radiation flux the power consumption (120 W) of the developed 5-jar chandelier is 5-10 times less than the consumption of the chandelier with incandescent bulbs (600-1200 watts). By reducing the power consumption, a reduction of the volume of harmful emissions on thermal power stations is achieved as well as the reduction of environmental pollution. A model LED chandelier with heat pipes was produced. The following results were obtained experimentally: new dependencies of the LED modules temperature on the heat flux in a free and forced convection regimes; the value of the maximum heat flux, which can be transmitted from the LED modules by the heat removal system; the coefficients of heat transfer in the heating and condensation zones of heat pipes; the influence of the heat pipe orientation on the thermal characteristics; the value of the contact thermal resistance between the LED module and the heat pipe. Sketching design documentation was developed for the layout of chandeliers and engineering methods for calculation of the chandelier thermal characteristics. Product Description popup.authors Алексеїк Євгеній Сергійович Баранюк Олександр Володимирович Биков Євген Вікторович Козак Дмитро Віталійович Кравець Володимир Юрійович Лозовой Максим Олексійович Нікітюк Павло Сергійович Наумова Альона Миколаївна Олійник Олександр Сергійович Постол Артем Сергійович Рибалочка Андрій Володимирович Руденко Олександр Ігорович Хайрнасов Сергій Манісович Хмельов Юрй Олександрович popup.nrat_date 2020-04-02 Close