State of the art in heliostats and definition of specifications stageste. Robert pitzpaal, nicolas bayer botero, aldo steinfeld heliostat field layout optimization for hightemperature solar thermochemical processing solar. Pdf design and calibration of a heliostat prototype for. The solar power tower, also known as central tower power plants or heliostat power plants or power towers, is a type of solar furnace using a tower to receive the focused sunlight.
Final report the design and fabrication of a lower cost. Part of themechanical engineering commons this poster presentation is brought to you for free and open access by the office of sponsored and undergraduate research at valposcholar. Since a heliostat is intended to always face the sun, this heating is. The plane mirror is mounted along an axis parallel i. Although the use of a single heliostat size has been questioned in the literature, there are no tools to design fields with heliostats of several sizes at the same time. Yiyi zhou, yuhong zhao department of control science and engineering, zhejiang university, hangzhou, zhejiang, china, email. Sin s approach to heliostat design was to remain small, moving most of the value added work into factories and software, and reducing field work to a small number of low. This design methodology led to a significant departure from more traditional heliostat fields. A new design for concentrated solar power csp plants could cut the cost of their heliostatsthe mirrors that reflect sunlight onto the facilities collection towersby onethird. New heliostat design could cut concentrated solar costs. Cranks out alternative energy plant designs in solidworks. Design calculations of heliostat field layout for solar thermal power generation proceedings of 105th ththe iier international conference, bangkok, thailand, 5 6th june 2017 51 about 40 km, the atmospheric transmission efficiency can be calculated simply as a function of the distance between the heliostat and the receiver in meters as follow 7. Improved heliostat field design for solar tower plants francisco j.
A new method for the design of the heliostat field layout for solar tower power plant is proposed. I just want to give you an impression on what great effect a simple mirror in your garden might have on your life, wellbeeing and energy consumption. Solar power towers are set to play an increasingly dominant role in the csp landscape. A paradigm shift in concentrated solar power csp posted on september 30, 20 by azn5189 the traditional method used to harness solar power is the direct conversion of solar radiation to electricity, through the photovoltaic cell. In the new method, the heliostat boundary is constrained by the receiver geometrical aperture and the efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency of heliostat. The heliostat design and kinematics have been developed, modeled and.
Pdf improved heliostat field design for solar tower plants. Heliostat field design for solar thermochemical processes robert pitzpaal dlr solar research based on. Heliostat manufacturers selected list lightmanufacturing. A typical heliostat consists of a flat plane mirror and a curved parabolic mirror. It is a decent starting point if you want to build one of your own, but i certainly wouldnt call it the final version. Re re heliostat frame design overview heliostat support frame reflector mount universal joint heliostat cable drive actuation final heliostat assembly foundation, or lack thereof conclusions future research overview many existing heliostat frames and bases use large drives and actuators mounted on a poured concrete foundation. Pdf solar power tower systems have attracted the worldwide interest since the early 1980s and heliostat fields have been an area for. It should be able to send the light just about anywhere you wa. Customer licenses the esolar technology, and receives. One of the cornerstones of our approach to heliostat design is to deploy many factorybuilt small heliostats in. Currently, costs associated with the construction and maintenance of heliostats have proven prohibitive with respect to mainstream industry use. Heliostat wind effect instrumentation esolar youtube. Solarreserve is testing engineering units at the national solar thermal test facility nsttf operated by sandia. A new method of heliostat eld layout design is presented for solar tower power plant in this paper.
Re heliostat reflector is to accurately focus sunlight onto a thermal receiver. Re esolar has been designing small heliostats since the companys founding in 2007. Testing and evaluation of largearea heliostats for solar thermal applications. Heliostat field design for solar thermochemical processes sfera.
A compliant structure design is proposed that to use a simple flat mirror with a twodimensional tailored stiffness profile to form the required parabolic surface using adjustment mechanisms at each corner. A large, medium and a small size heliostat with a total area of. Lowcost heliostat for modular systems us department of. The reflector must be weather resistant, relatively easy to position, and low cost to manufacture and maintain. Design and calibration of a heliostat prototype for solar energy collections.
Catalog of solar heliostats june, 2000 iea solar power and chemical energy systems. Our team is passionate about sustainable and environmentally friendly energy systems, and we want to share our knowledge to benefit our customers and to help the environment. The people in the office are super friendly and very helpful. The company says it decided to test its prototype heliostats at nsttf because of sandias, knowledge and reputation in the solar industry, as well as the breadth of resources available for improving and testing new designs. Heliostat and concentrator design tyler heagney andrew schiller matthew gaide follow this and additional works at. Survey of heliostat concepts for cost reduction journal of. Heliostat field layout design for solar tower power plant. Heliostat design elements thermal stability solution is solar heating of the support ring since a heliostat is intended to always face the sun, this heating is always at work crosssectional view structural foam board conductive support ring foil layer reflective film heat absorbing layer insulating layer patent pending solar. At these temperatures the total efficiency will be fairly low.
In the current concentrated solar power csp context, where central receiver system crs technology seems to be the most promising csp technology with. Heliostat fields typically contribute about 50% of the capital investment for csp tower plants, according to a study by sbp sonne, the german engineering firm which has developed the stellio heliostat design. The thermal solar energy harvest method is typically contrasted to the pv approach. Bay village, ohiobased skysun has come up with a design that connects multiple heliostats to a single motor and support structure, greentech media reports. Comparison of two sun tracking methods in the application of a heliostat field the basic mathematics and structure of heliostat have remained unchanged for many decades. My pool heated by my solar system installed by them is the best money i ever spent. Robert pitzpaal, nicolas bayer botero, aldo steinfeldheliostat field layout optimization for hightemperature solar thermochemical processingsolar energy, volume 85. A heliostat reflects light on a parabolic mirror reflector for a final concentration factor of about 50 to one. In this design, the radial staggered pattern is proposed to reduce the shadowing and blocking losses. These effects are analyzed in a power tower with a net capacity of 100 mw e, 8 hours of thermal energy storage and a solar multiple of 1. The heliostat project aim is to develop a low cost device for tracking the sun, capable of aiming at multiple targets, and based on the arduino mcu platform. A closepacked heliostat field of more than 800 m 2 reflector area has been installed by solar heat and power for the csiro solar tower at the energy centre in newcastle, australia. The australian solar thermal research initiative astri aims to develop a high optical quality heliostat with target cost manufactured, installed and operational of 90 audm 2.
A heliostat is a mirror based system which is used to continuously reflect sunlight onto a central receiver. Cleaning position where the rows of mirrors face each other and an esolar. Concentrating solar power plants use mirrors or lenses to focus a large amount of. The harvey mudd college esolar clinic team was asked to design, build and test a data acquisition system to measure the effect of wind. Heliostat field design for solar thermochemical processes. Pdf sun tracking study and preliminary design of heliostat field in. The lightmanufacturing h1 heliostat delivers over 0 watts of heat to a target or over 150,000 lumens for lighting applications. Parabolic trough plant without thermal energy storage have capital costs as low as usd 4 600kw, but low capacity factors of between 0. The collected solar energy is then converted into electrical power. Meanwhile, esolar chose to commercialize a smallerscale, modular plant design starting at 46 megawatts, with massmanufactured heliostats to cut the cost of the solar field.
Design considerations to ensure that this project is widely dispersed, considerable effort went into designing the heliostat to be built with common tools and cheap materials. Modular and scalable concentrating solar thermal power csp. Angular rates and angular velocity of the reflector 4. Three different heliostat design concepts are described, each with features identified during a prior scoping study as having the potential to contribute to cost reduction compared to the. Pdf commercial readiness of esolar next generation heliostat. Concentrated solar power contender esolar goes awol. This combination will produce temperatures in excess of 3000f. Survey of heliostat concepts for cost reduction journal. The target may be a physical object, distant from the heliostat, or a direction in space. Pdf design and simulation of small heliostat field at universiti. The first design choice was to build the body almost entirely out of foam core, which is rigid, affordable, easy to acquire, and easy to cut. It can only send the light to somewhere on the axis of the equatorial mount. This paper describes the unique attributes of esolars field design.
Off the shelf parts such as satellite dish actuators and other easy to find parts are used. Page 1 page 2 page 3 page 4 page 5 here is a set of heliostat plans which i have used in the past. A new method for the design of the heliostat field layout. The design and fabrication of a lower cost heliostat. The concentrator system in central receiver concentrating solar power. Heliostat, instrument used in solar telescopes to orient and focus sunlight along a fixed direction. We faced two specific design challenges while trying to fulfill these requirements. This is a breakthrough price achievement, and indicates potential economic feasibility of concentrator solar thermal power using heliostats on a. Fields are usually designed to have all heliostats of identical size. Houscr solar tlwrmal test department sandia national laboratories albuquerque, new mexico 87185 abstract two heliostats representing the stateoftheartin glassmetal designs for central. During 2008 and 2009, esolar designed, constructed, and began operation of its demonstration facility, which comprises two towers each with heliostat subfields to the north and the south.
The heliostat field has been designed with significantly greater field packing density than normally associated with heliostat fields. These heliostat fields are composed of large numbers of small heliostats, creating an arrangement unlike other central receiver plants. It uses an array of flat, movable mirrors called heliostats to focus the. The survey might serve as a base for the development of low cost heliostats that are needed to meet the current challenging cost objectives. How do i attach the suntracker i recently made a solar accumulator which is a limited heliostat, i guess. A survey of hitherto concepts for cost reduction of heliostats is given.
Solar power towers, heliostat, concentrating solar power. Stellio heliostat set to cut csp tower costs by 20% new. The h1 offers the lowest costperreflected watt of any commercially available heliostat. By revolutionizing the design of a likely alternative to fossil fuels or other energy sources, the new mexico tech heliostat team believes is can encourage the prosperity of the planet and its inhabitants. Collado 1, a and jesus guallar 1, b 1 mechanical engineering dpt. Lowcost heliostat development this project is inactive hitek services, under the baseload csp foa, conductied fundamental parametric analyses of the optimum heliostat size and developed a novel lowcost heliostat design. Comparison of two sun tracking methods in the application. Commercial readiness of esolar next generation heliostat. Robert pitzpaal, nicolas bayer botero, aldo steinfeldheliostat field layout optimization for hightemperature solar thermochemical processingsolar energy, volume 85, issue 2, february 2011, pages 334343 2 classification of crstools.
Installation of a solar field is always a big task, but esolars small heliostat and its unique design make the big task easily achievable with local unskilled labor. The design of a solar power tower plant involves the optimization of the heliostat field layout. Design of the heliostat field of the csiro solar tower. Heliostat field layout design for solar tower power plant based on gpu. Were proud to manufacture the powerful, low cost h1 heliostat, but there are a number of other interesting heliostat manufacturers out there. Some of these suppliers may be a good fit to your project. One of the cornerstones of our approach to heliostat design is to deploy many factorybuilt. The design and fabrication of a lower cost heliostat mirror. Testing and evaluation of largearea heliostats for solar. Concentrating solar power csp plants are capital intensive, but have virtually zero fuel costs. The objective of this study is to investigate the effects of heliostat size on the levelized cost of electricity lcoe for power tower plants. Re heliostat design the reflector module 2 as just one example of work in this field, see this esolar heliostat paper from the solarpaces 2010 conference, or look at work by brightsource, other companies heliostat concepts, or discussions over the past few years at the solarpaces conferences. An optimization tool to design the field of a solar power. Environmental solar design is absolutely the best company i have ever dealt with in my entire life.