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Aevum Control Lighting and Equipment - IIoT
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
Megatower™
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
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Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
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Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
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Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
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NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
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Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
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Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
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HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
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Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
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LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
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Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
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Recharging Spotlights
Fire Rescue Lights
LED Street Lights
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Headlights - Headlamps - Hard Hat Lights
Flashlights
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Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
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New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
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Power Plant Lighting
Refinery lights
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Film and Entertainment Lights
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Mining Lights
Ship Yard Lights
Work Site Lighting
         

   
03/27/17 Why Solar Panels Are Grossly Inefficient (But Sometimes the Only Choice)

Article - March 27, 2016 By LarsonElectronics.com

Solar Powered Generator - 18 Kilowatt Max Output - 120/240VAC 3 Phase - 19' Trailer Config.

Why Solar Panels Are Grossly Inefficient (But Sometimes the Only Choice)

Solar energy is an unlimited power source that, in some ways, is very inefficient. At the moment, developments in photovoltaic (PV) technology cannot meet the expectations of mainstream consumers and commercial establishments. However, this does not mean that solar generators are useless. They play a very crucial role in delivering power to far-flung locations, temporary camps and remote bases.

Read on to find out why solar panels are inefficient and the importance of solar generators in supplying power to remote locations.


Second Law of Thermodynamics

The main culprit responsible for the inefficiency of solar cells lies in the second law of thermodynamics. Carnot’s theorem, which was developed by Nicolas Léonard Sadi Carnot in 1824, suggests that this law is the reason why it impossible to create a fully efficient solar cell. In application, for systems that rely on sunlight concentration, the maximum level of efficiency of such units is 85 percent. This figure decreases greatly, as low as 55 percent, when the panels do not track the sun’s UV rays. Interestingly, when outdoor conditions are unfavorable, solar systems have a difficult time tracking sunlight.

But this is only one of many variables that contribute to the drawbacks of solar energy; and it does not reflect the highest efficiency levels of mainstream solar PVs on the market today, which is significantly lower than 55 percent.

Furthermore, it is not possible to capture 100 percent of the sun’s light with PV cells. This is because the sun’s rays are not made up of 100 percent light (it also comes with heat). A study conducted by William Shockley and Hans Queisser, semiconductor physicists, revealed that under favorable conditions, roughly 1,000 watts of natural sunlight reaches earth per square meter. Out of this amount of sunlight, around 33.7 percent can only be used by solar PVs.

It is important to consider that extremely efficient solar energy systems that utilize an array of semiconductor technologies are too expensive for mainstream consumers at this time. An example of such units include concentrated PVs (CPVs), which can reach 86 percent efficiency through the use of thick, reflective mirrors. The rapid advancement of the sector indicates that pricing barriers may fall eventually, as the technology becomes more usable.

Additionally, most of the groundbreaking results recorded from solar energy systems were conducted in controlled environments, such as a lab. In order to get a realistic view of the performance of solar cells and modules, tests should be facilitated in their target environment, i.e., residential rooftops, open fields and commercial spaces.


Alternatives Are Not Any Better

Despite being inefficient, solar energy is sometimes the only choice for individuals or groups living in remote locations. Setting up access to the grid in such locations is a huge undertaking, which entails trenching for electricity poles, lengthy wiring and countless hours of labor. Relying on a fuel-powered generator is the closest option to remote power, but such systems require around-the-clock fuel trips. If the camp is in the middle of a disaster zone or extremely inaccessible due to bad weather, acquiring a constant supply of fuel can be difficult and dangerous.

In such cases, solar power is a very viable option. Deploying a solar generator after arriving at the target location takes less than an hour, depending on the number of devices being hooked up to the system. Compared to fuel-powered variants, solar generators operate quietly without emitting harmful smoke and can be setup close to high traffic areas. Maintenance for such machines are minimal, because they have less moving parts that are prone to wear and tear.

In another study, that was published in the U.S. National Library of Medicine, researchers tested the effectiveness of UV air treatment in commercial office spaces. The group focused on fungal build-up in air-handling units (AHUs) over a span of four months. If not properly maintained, fungus can easily thrive in HVAC systems (filters, insulation and cooling coils). Such contaminations have been linked to a number of respiratory medical conditions, including allergic rhinitis, asthma, and hypersensitivity pneumonitis.

With a reliable battery, users may use stored power when sunlight is not available (cloudy weather and after sunset). This would allow individuals in the area to continue working throughout the night with confidence. Lastly, it is important to consider that solar energy is free to use and does not contribute to harmful emissions and noise pollution. Hence, there is a lot of potential that comes with the nascent technology; and many believe that scientists will be able provide solutions for its inefficiencies in the near future.





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