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According to Frank E. Little of the Texas A&M University Aerospace Engineering Research Center, in fact, the Japan Aerospace Exploration Agency (JAXA) is promoting its demonstration of space-based solar technology. The plan, while its artificial satellite is expected to be airlifted by the end of the next decade, will establish a complete test system by 2030.
According to the report of the International Academy of Aeronautics and Astronautics, the time is ripe to verify the concept demonstration of the solar power satellite system. This verification plan is crucial for building confidence for engineers, decision makers and the public, and it can also promote space solar power generation technology. Gradually mature, and promote the deployment of solar power satellites continue. However, the obstacle to deployment and even testing now is that many existing space solar platforms are at the cost of launching the necessary equipment to enter the orbit.
Frank said that it is costly to prepare this necessary equipment, and this cost is also related to the manned experiment. Because the experiment involves people, the consideration of security risks will increase the cost of this demonstration program. In addition, the cost of this project from the earth to the space station costs millions of dollars. This is why some experts in this field think that conducting large-scale solar energy experiments may not be the best choice after considering the return on investment.
Stephen Sweeney of the University of Surrey in Germany, who works on laser experiments in Germany, said that the initial goal of this work is not to replace all existing energy supply systems, but to provide energy for special situations, such as Disaster areas and war-torn areas.
The core concept of space-based solar energy began to develop in the 1970s: placing solar panels on artificial satellites, transmitting the collected energy back to earth's receivers, and finally converting them into electricity. Collecting sunlight in space means that solar panels must completely absorb solar energy under atmospheric pressure. Satellites in synch with the Earth can be exposed to the sun all day and avoid cloud cover. At the same time, due to the height of the satellite, the collected sunlight can be rapidly re-transmitted to where it is most needed.
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Site Selection for Mass Flow Meter Installation
a) Sensor stays away from mechanical vibration source, for example, pump. Use flexible pipe to connect meter with pipeline if inevitable. The housing of meter must be standalone, out of touch with any other device. There must be 3 times the size of sensor between 2 sensors if there are many flow meters on the same pipeline, to avoid resonance.
b) Do not install sensor on pipeline that easily expands with hot and contracts with cold, especially near expansion joint, which leads to a worse stability.
c) Sensor stays away from industrial electromagnetic field, such as large generator and transformer, better 5m at least. Such device influences the performance of drive coil and pickoffs. Make sure magnetic field intensity less than 400A/m.
d) Sensor shall be installed on lower pipeline, to be easily full of fluid.
e) Make sure Ex-mark meet application requirements if in hazardous area.
f) Build a sunshade if the meter is under direct solar radiation. g) Keep the meter from corrosive liquid.
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