Monitoring Hot Spots In Photovoltaic Systems

Mitigation of Hot-Spots in Photovoltaic Systems Using Distributed Power Electronics

Energies ◽

10.3390/en11040726 ◽

2018 ◽

Vol 11 (4) ◽

pp. 726 ◽

Cited By ~ 13

Author(s):

Carlos Olalla ◽

Md. Hasan ◽

Chris Deline ◽

Dragan Maksimović

Keyword(s):

Power Electronics ◽

Hot Spots ◽

Photovoltaic Systems ◽

Distributed Power

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A high-performance oil-free backing pump for electron microscopes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100107691 ◽

1978 ◽

Vol 36 (1) ◽

pp. 110-111

Author(s):

G.K.W. Balkau ◽

E. Bez ◽

J.L. Farrant

Keyword(s):

Molecular Weight ◽

Electron Microscope ◽

Hot Spots ◽

High Performance ◽

Carbonaceous Material ◽

Contamination Rate ◽

Low Molecular Weight ◽

Principal Source ◽

Rotary Pumps ◽

Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

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Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

Nanoscale ◽

10.1039/d0nr01008a ◽

2020 ◽

Vol 12 (33) ◽

pp. 17265-17271

Author(s):

Seong Kyung Nam ◽

Kiwon Kim ◽

Ji-Hwan Kang ◽

Jun Hyuk Moon

Keyword(s):

Solar Light ◽

Photovoltaic Systems ◽

Solar Concentrator ◽

Solar Concentrators ◽

Luminescent Solar Concentrators ◽

Luminescent Solar Concentrator ◽

Triple Band

Luminescent solar concentrator-photovoltaic systems (LSC-PV) harvest solar light by using transparent photoluminescent plates, which is expected to be particularly useful for building-integrated PV applications.

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