The development of new semiconductor technology leads to green and Energy Saving Campus

Each Chinese University Campus due to geographical location, the student profile is different, will have their own unique energy needs. We can refer to the United States in 2001 a study to see the energy consumption patterns.

As can be seen from the chart, the largest single source of electricity consumption in the campus is lighting, which may account for 30% of the overall power consumption of the campus. Followed by heating / heating (including boiling water) and (space) refrigeration, the proportion of these two energy consumption may be more than 35%. In addition, about 20% of the energy consumption comes from refrigerators and other appliances. Computers and other electronic products, such as TV, music players, DVD and set-top boxes, chargers, account for about 15% of the total energy consumption on campus.

The biggest power consumption on campus is from Yu Zhaoming

Choose CFL with LED lighting, energy saving 75%

"In terms of lighting, the greatest source of energy savings will be shifted from the traditional incandescent light emitting diode (LED) or compact fluorescent lamp (CFL). "Semiconductor automotive and power management department of marketing director Eamonn Ahearne said," LED has been used in outdoor lighting is very good, but now more and more extended to the indoor application. "

For example, he said: "A Morimi semiconductor has done an experiment, we bought a fashionable international furniture store in a very popular among the students 50W reading lights. The reading lamp uses a halogen bulb, driven by a 60Hz transformer (1.5 kg). We measured the input power of the lamp is 44.2W (power dissipation in the transformer is 9.7W), the corresponding light intensity is 65.7 feet. We use a LED instead of halogen lamps, and replace the transformer with the NCP1013/14 controller circuit board based on the A Morimi semiconductor. When we turn on the reading light, we find that the input power of the 6.0W (the power dissipation of the LED lamp power supply is 1.69W), we get the light intensity of 75.1 feet per watt. So, by switching to electronic solutions, we get the light output per watt is 8 times that of the original, and the total power consumed by our new lamps is less than the original halogen lamps in the power of the transformer waste alone. "

On the CFL side, Ahearne points out that the main power savings are achieved through the success factor correction (PFC) of the electronic ballast. For example, if the power factor is not regulated, 1 power socket current capacity of 16A can only drive about 7 personal computers (PC); but the power factor by adjusting the same power socket, can drive 12 sets of PC. Therefore, through the application of PFC in lighting and general electronic products, we can eliminate some of the energy loss, and reduce the expansion of the distribution network, thereby compensating for the loss of traditional demand. "Although CFL and LED lamps are more expensive than incandescent bulbs, they work 10 to 20 times longer than incandescent lamps and are more efficient. Therefore, the university president not only to consider the cost of lighting to reduce, but also to consider the campus in the replacement of lamps and lanterns required to reduce labor costs. He pointed out.

Chen Kun, vice president of sales in China and Southeast Asia, and is clearly pointed out that by using compact fluorescent (CFL) and light-emitting diode (LED) lighting, can save up to 75% power. He explained: "CFL contains semiconductor devices, the use of electricity has been reduced by 75%, the service life of up to 10 times. LED lighting is also used in semiconductor devices, can save more energy, service life of up to 20 years. Fairchild offers for CFL and LFL design of highly integrated ballast IC products (FAN7710 and FAN7711), in a single solution in the integration of high-end 550V MOSFET, gate driver circuit, frequency control circuit and a shunt regulator is very compact, high efficiency for the generation of products.

Source: International Electronic Business