LED high bay lighting reliability (life) largely depends on the heat level, so the level of progress in cooling is one of the key technologies. Mainly to the disposal of chips to produce excess heat through the heat sink, cooling the body passed in, this is a very complex technical problems. Following respectively narrative:
The power LED high bay lighting, which LED needs to think the heat issues, the power LED cooling needs. Power LED is a light-emitting diode operating current more than 100mA. Line marked in China with reference to the League of the United States ASSIST defined, according to two kinds of LED forward voltage of typical 2.1V and 3.3V, the input power are more than 210mw, and 330mW LED power LED, needs to think the device heat dissipation problem, some people may have a different insight, but the theory proved to progress the power LED high bay lighting reliability (life), it is necessary to think about the power LED thermal problems.
The LED high bay lighting. Just a few years ago LED technology could not produce a reliable LED configuration to compete with T5 or 400 watt Metal Halide output. Those days are gone!
James Lighting has a new LED high bay lighting offering that boasts some very impressive numbers when it comes to lumen output.
Utilising the latest in LED technology, the LED high bay lighting offers superb energy efficiency combined with lumen outputs that allow effective replacement of 400W metal halide luminaires. The LED high bay lighting also utilises lens control providing accurate distribution of light ensuring minimal wastage and energy consumption.
The LED high bay lighting is also offered with a range of sensor controls to further enhance your energy saving giving both daylight regulation and presence detection and also offering ground level remote programming for ease of commissioning. Integral sensors allow these luminaires to be installed on a one for one basis with no need to install additional BUS wiring therefore minimising your installation costs.
A typical 400 watt highbay produces 20,000 lumens with a brand new lamp. However, that number quickly decreases due to the poor life of metal halide. so lets assume the lamp is running at 70% output(most places I have been are far wore than that). That takes us down to 14,000 lumens, all while consuming 456W of electricity.
The LED fixture produces 18,000 Lumens while consuming a paltry 213W….thats a 54% reduction in operating costs!!! Not to mention that the LED high bay lighting maintains 92% of it’s output at 60,000 hrs. and has a rated life of 100,000 hrs!
By the way, you can also do motion sensors on LED.
Heat related parameters and LED high bay lighting heat dissipation on the main parameters of thermal resistance, junction moderate temperature rise. Thermal resistance refers to the steady-state power dissipation of the quotient of the effective temperature of the device and external rules, the reference point temperature difference divided by the device. It is said the most important parameters of the device cooling. Heat better power LED thermal resistance is less than10 Celsius / W to reports, the best thermal resistance is less than 5 Celsius/ W thermal resistance abroad up to less than 3 Celsius / W, to achieve this level ensures that the power LED life .
Junction temperature of LED high bay lighting in the main heating part of the semiconductor junction temperature. It is the performance of LED devices in the operating conditions, can withstand temperature. To this end the SSL planning progress heat purposes. The heat resistance of the chip and the phosphor is still high, had arrived in the chip junction temperature of 150 Celsius, the phosphor at 130 Celsius, the basic life of the device will not have any effect. Description of the chip, phosphor heat resistance, the higher the cooling begged the lower
Temperature rise of several different temperature rise, we are discussing here is: shell and tube – Environmental temperature. It refers to the LED device shell and tube (LED lamps can be measured to the hottest) temperature and the environment (in the luminaire plane 0.5 m from the lamps) temperature difference. It is a direct measurement of temperature and direct degree of peripheral thermal performance of LED devices, the theory has been proved in the ambient temperature is 30 Celsius, it is assumed that the measured LED tube shell of 60 Celsius temperature rise should be 30Celsius at this time is basically to ensure that Heat LED lamps. With the commencement of LED lighting products, there are two kinds of new technology: First, in order to increase the luminous flux of a single tube, inject greater current density, as in the following referred to, resulting in chips generate more heat and cooling demand. Second, the package structure, as the LED light source power increases, the demand for more power LED high bay lighting chip collection package together, such as the COB structure, modular lamps and so on, will generate more heat, the demand for more effective heat dissipation structure and measures, which gave heat a new topic, otherwise it will greatly affect the performance and life of the LED lamps,Lamp holders manufacturer,