background preloader

Solar tracker

Solar tracker
A backyard installation of passive single–axis trackers in winter midday position, tilted toward the south. The tall poles allow walk-under and use of the ground space underneath the panels for plantings that thrive on protection from the intense midday summer sun at this location A solar tracker is a device that orients a payload toward the sun. Payloads can be photovoltaic panels, reflectors, lenses or other optical devices. In flat-panel photovoltaic (PV) applications, trackers are used to minimize the angle of incidence between the incoming sunlight and a photovoltaic panel. In concentrated photovoltaic (CPV) and concentrated solar thermal (CSP) applications, trackers are used to enable the optical components in the CPV and CSP systems. Basic concept[edit] The effective collection area of a flat-panel solar collector varies with the cosine of the misalignment of the panel with the Sun. The sun also moves through 46 degrees north and south during a year. Types of solar collector[edit] Related:  Sun Tracker - Heliostats and Solar Tracking Sun Tracking Solar Panel System I have been thinking about some green ways of depending on the grid as much as I do. There are so many things that can be done but most are very expensive unless you use some build some of it yourself. Have a look at this solar and wind system that uses some home made sun tracking units. "The systems tracks the Sun using a controller from Red Rock Energy and a Satellite Jack Arm. The tracking device is custom made.

Solar energy Solar energy is radiant light and heat from the sun harnessed using a range of ever-evolving technologies such as solar heating, solar photovoltaics, solar thermal energy, solar architecture and artificial photosynthesis.[1][2] In 2011, the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating global warming, and keep fossil fuel prices lower than otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared".[1] Energy from the Sun About half the incoming solar energy reaches the Earth's surface. Early commercial adaption Solar thermal Water heating

Solar Tracking, Solar Tracking Systems, Solar Trackers | We Catch the Sun Slewing drive Standard Kinematic's SE slewing drive. This slewing drive in particular can handle over 300kNm of torque.[2] History[edit] Technology[edit] Traditional worm gear with a 4-start worm. Slewing drives function with standard worm technology, in which the worm on the horizontal shaft acts as the driver for the gear. As technology has improved, more and more slewing drives are now functioning with hourglass worm technology which functions much in the same way as a traditional worm with one big exception: a traditional worm touches just one tooth at a time while an hourglass engages up to 11 teeth at one time.[5] This increased tooth engagement results in far greater strength, efficiency and durability. Performance characteristics[edit] Because of their multiple uses, slewing drives come in a variety of model sizes, performance ranges and mounting characteristics. Materials[edit] The specifications for drives and gears varies depending on the material the gear is composed of. Applications[edit]

Sun Tracking Solar Panel : Undergrad Project funded by DST, Govt of India - Sampriti Bhattacharyya The Sun Tracking Solar Panel was an idea derived from the project on Space Technology, in my sophomore year. We found that, if a rover had rotating solar panels that would always point towards the sun, it could have a considerable increase in it's efficiency, theoritically as much as by 50%.With this in mind, I worked on a programmable Sun Tracking Panel which would track the sun althrough the day and at night and retrace it's steps back to the east at night to face the sun again, the next day. This project got approved and funded by Department of Science and Technology (DST, India) Originally I wanted the panel to have motions in two axis, but we only made a simplified version, as a part of a renewable energy project. If you are interested in building one, I still have a two axis design. Other members of this project are Santu Datta, Abhinanda Basu and V. The panel uses photodiodes to locate the sun and is has stepper motors controlled by the ARM 7 microcontroller. Detailed Description:

Solar water heating Solar water heating (SWH) or solar hot water (SHW) systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. SWH has been widely used in Australia, Austria, China, Cyprus, Greece, India, Israel, Japan and Turkey. In a "close-coupled" SWH system the storage tank is horizontally mounted immediately above the solar collectors on the roof. No pumping is required as the hot water naturally rises into the tank through thermosiphon flow. In a "pump-circulated" system the storage tank is ground- or floor-mounted and is below the level of the collectors; a circulating pump moves water or heat transfer fluid between the tank and the collectors. SWH systems are designed to deliver hot water for most of the year. Overview[edit] Water heated by the sun is used in many ways. A solar water heater installed on a house in Belgium History[edit] An advertisement for a Solar Water Heater dating to 1902 Mediterranean[edit] Asia-Pacific[edit]

PowerFilm - lightweight, thin, flexible solar panels Project Free Power » Building a Sun Tracker Sun Trackers are a great way to get maximum performance out of your solar panels. Positioning your solar panels in a fixed location will do the job, but you will be robing your self of free power and maximum efficiency! The only downfall of a solar tracker is it takes energy to move the motor to reposition the panels so they are always facing the sun. Overall an efficient Solar Trackers can produce 30-50% more amp hour making it a very worth while project. A simple solar tracker can be built using some common radio shack parts, to upgrade this project to full size, you would simply use a heavier duty motor and relays which would be dependent on the size of your panels and how much energy is needed to rotate them. Parts List: 3 x LDR 1 x 33 R Resistor 1 x 75 R Resistor 1 x 100 R Resistor 1 x 10K Resistor 1 x 20K Resistor 1 x 2N4401 Transistor 1 x TIP120 Darlington pair 1 x 9v Relay 1 x 5v Motor With the schematic laid out, you can see it is a very simple design.

Economy : ‘Narmada canals can give 2,200 MW of solar power’ It will also save 11,000 acres of land, says Gujarat CM Mehsana (Gujarat), Apr 25: If even 10 per cent of the 19,000 km-long Narmada canal network in Gujarat is used for setting up canal-top solar panels, it has the potential to produce 2,200 MW of solar power, save 11,000 acres of land that would otherwise be used and prevent 2,000 crore of precious water from evaporation annually, the Chief Minister, Mr Narendra Modi, said. Also, canal-top solar power equipment produces 15 per cent more power than the plant set up on land as the water flowing underneath keeps the solar panels relatively cool and helps generate more power, he said. The State Government was compelled to take up this project through Gujarat State Electricity Corporation Ltd (GSECL), as no developer was ready to take the challenge at that time, he said. The length of the Narmada Main Canal, constructed under the Sardar Sarovar Project (SSP), is 458 km. New tech (This article was published on April 25, 2012)

Solar thermal collector Solar thermal collector dish The term "solar collector" commonly refers to solar hot water panels, but may refer to installations such as solar parabolic troughs and solar towers; or basic installations such as solar air heaters. Solar power plants usually use the more complex collectors to generate electricity by heating a fluid to drive a turbine connected to an electrical generator.[1] Simple collectors are typically used in residential and commercial buildings for space heating. Heat collectors[edit] Solar collectors are either non-concentrating or concentrating. Flat-plate and evacuated-tube solar collectors are used to collect heat for space heating, domestic hot water or cooling with an absorption chiller. Flat plate collectors[edit] Flat plate thermal system for water heating deployed on a flat roof. Flat-plate collectors, developed by Hottel and Whillier in the 1950s, are the most common type. Applications[edit] Evacuated tube collectors[edit] Evacuated tube collector Air[edit]

Heliostats and Solar Tracking Heliostat Kits, Solar Tracker Mechanics, and Custom Control Circuits (Contact Us) Shipping charges will be based on shipping selection for the first item in your cart. $3 handling for each additional item. Downloadable PDF (Current V3.3 controllers) Applications: Single-Axis, Twin Single-Axis, and Dual-Axis solar tracking Pump control Thermostat control Servo control Applications requiring switching outputs based on voltage comparisons Specifications: Controller circuit description: The dual axis solar tracking controller features three inputs and two solid state H-bridge driver outputs. Although this controller was designed primarily for dual axis solar tracking it can also be used for control of other loads requiring DC current up to 4 amps. *** Never apply power directly to the motor terminals , this will destroy the driver transistors and incur a $75 fix it fee. Installation instructions: 1) Mount the tracking controller box in an accessible location. Tracking Delay Time Table

Solar Tracker - How To Build Solar Tracker Circuit Kit Solar Tracker Circuit Kits from MTM Scientific, Inc Solar Tracking Kits, Motors, Sensors, Circuit Booklet and Photos of Customer Projects Español Aqui Photo of Solar Tracker Circuit Kit after assembly (Catalog #ST2) The SOLAR TRACKER 2 CIRCUIT KIT (Catalog #ST2) from MTM Scientific contains all the electrical parts you need to build a circuit which will automatically find and follow the sun across the sky. Solar Tracker Circuit Specifications: 3 Amp Max Motor Current, 12 VDC Supply Need higher current? Please note: This circuit kit is for controlling a 12 VDC electric motor that you provide. SOLAR TRACKER 2 KIT (Catalog #ST2)... $52.50, Worldwide Shipping Included TO ORDER BY PAYPAL: Order using the Paypal button shown. Photo of DC Gearheard Motor (Catalog #ST2M is the #ST2 kit with this motor.) Our DELUXE SOLAR TRACKER KIT #ST2M includes a small 12 VDC Gear Head Motor with the #ST2 circuit kit (above). SOLAR TRACKER 2 CIRCUIT KIT with MOTOR(Catalog #ST2M)... $71.50, USA Shipping Included