On the vast sea, fish lanterns are important tools for fishermen to attract fish and purse-seine fishing. When LED lights for energy saving and environmental protection into the daily life of tens of thousands of households, because of ultra-low-power LED chip low cost heat dissipation problem can not be effectively resolved, in the sea fishing using LED lights instead of traditional metal halide lamp is not easy.
The traditional metal halide lamp power is high, the energy consumption is big, plus the fishing vessel Marine Electric power all relies on the ship to carry on the diesel power supply, has restricted the fishing vessel's sailing time and the fishing quantity seriously.
With the advent of a new collection of fish lights, the dilemma is expected to be cracked. Recently, the Shandong Provincial Academy of Science Energy and Shandong Ren Bo Energy Technology Co., Ltd. cooperation in the implementation of high-power led set fish lamp demonstration project in Rongcheng Shidao Xingang Wharf successfully launched.
It is learnt that in the demonstration project, independent research and development by the Institute of Energy Research 104 sets of high-power led set of 1200W power-fish lamp, mounted on a 56-meter-long, 11-metre-wide standard squid fishing boat, the fishing boat has been far away to the South Pacific (601099, shares bar) to carry out fishing operations, The two-year demonstration project kicked off and was favored by the industry because of its energy saving and excellent fish-collecting effect.
Heat dissipation troubles fishermen
For fishermen, the energy consumption of fish-collecting lamps is a big expense. "A standard squid fishing boat, about 3000 watts of traditional metal halide lamp 300, according to work 10 hours per night to calculate the power consumption of 9,000 degrees." "Research Fellow of Shandong Academy of Science of Energy, high-power LED set Fish Lamp demonstration project director Liu to Economic Herald reporter calculate a sum."
The Marine electrical energy of fishing vessels relies on shipboard diesel power supply, and the cost of generating electricity per kilowatt hour is 2. 5-3. About 5 Yuan. The cost of traditional metal halide lamps is high in fishing.
In fact, fishermen do not want to use low energy and environmental protection LED lights to fish it? The problem is that the super high-power LED lamp heat dissipation problem is plagued the industry for a long time. LED lights in the photoelectric conversion rate of only 15%-36%, nearly 70% of the electrical energy into thermal energy, which led to the high temperature of the LED lamp.
"LED Lamp center temperature can not exceed 90 ℃, if more than this temperature, will speed up light decay, increase electronic components temperature, reduce the life of LED lights." To solve this problem, we must adopt unconventional means to effectively dissipate heat. Liu explained.
Data show that the LED device temperature of 2 ℃ per increase, its service life will be reduced by 10%. Therefore, the high temperature on the quality of LED lights negative impact is great.
When we walk in the road, we often find such a phenomenon: After a summer, just installed not long time LED lights dimmed, and even some lights installed not long time on the bad. If high-power LED lights do not effectively solve the problem of heat dissipation, it is difficult to last.
It is precisely because the technology is not mature enough, fishermen in time again to high-power LED lights attempt, gradually lost confidence, resistance to the mood.
LED Set Fish lamp performance
Obviously, to make the LED lights widely used in fishing vessels, the first thing to be solved is the ultra high power LED chip low-cost heat dissipation problem.
September 2017, a long 24 meters, 8 meters wide small light fishing boat, in Shandong Peninsula 50 nautical miles from the Yellow Sea sea. On this fishing boat, a traditional collection of fish metal halide lamp and super high-power LED set fish lamp performance comparison between the experiment unfolds. One of the super high-power led set fish lamp is Liu as the leader of the Shandong Academy of Science and Energy Research Institute of Micro-Heat transfer team developed the results, this work has undergone 5 years of research.
"Heat dissipation using no power cooling mode and non-corrosive, non-polluting cooling medium, heat dissipation capacity reached 100w/cm2, after rigorous testing, in 95°c working environment, can also ensure the long-term work of the chip." "Liu said.
This led set of fish lights seemingly ugly, but in the industry for the first time to achieve a single 1000W above the effective heat dissipation, while solving the traditional water cycle refrigeration series single point of failure and low efficiency of refrigeration, so that ultra-high power LED lighting equipment applied to the actual become possible.
The comparison experiment also lets the fisherman see its superior performance, the energy saving, the lure fish, the response speed and the stability and so on aspect have behaved well. "In terms of energy consumption, the same voltage and frequency, the metal halide lamp Current is 240A, we developed the LED lamp current only 80A, electric energy consumption for the metal halide lamp 1/3." This means that a standard squid fishing boat, based on 300 days of work a year, can save at least 4 million-5 million of the electricity bill. "Liu said.
The effects of fish-collecting and response speed are also shown to be powerful.
September 20 The use of gold halide lamp operation first Nets fishing 36 cases, economic value of 2223 yuan; September 21 in the same sea use of energy research and development of LED operation of the first nets fishing 40 cases, many species of fishing, direct economic value of 11285 yuan; the second net uses the gold halide lamp Fishing 38 boxes, the economic value 6650 yuan.
In order to improve stability, Liu and his team also developed a low-power LED power supply with low harmonics, no strobe, a unique power management scheme, and the use of active PFC technology to make the power factor >0. 99, the current harmonics control under 3%, for the led to provide a stable and reliable output.
According to the Economic Herald reporter understand, high-power led set fish lamp demonstration project has attracted the first round of strategic investors 50 million yuan financing.
The most concerned about the cost of fishermen, the LED collection of fish lamp has also been the research team of multiple estimates, and finally realized the traditional metal halide lamp price is comparable.