asteroza + concentrating   73

Very high temperature (up to 1400C) molten silicon thermal energy storage. The kicker seems to be using concentrated solar power to melt, and a thermophotovoltaic system to recover power rather than a brayton cycle turbine using an intermediary fluid.
molten  silicon  thermal  energy  storage  concentrating  solar  thermophotovoltaic  TPV  power  generator 
june 2018 by asteroza
Insolight – Making solar energy affordable
Smart idea, using microlens plastic plate over CPV solar cells in a grid pattern under the plate, then shift the plate a little bit to track the sun. So basically you could do an artificial muscle actuator or MEMS to shift the plate, rather than some gigantic tracking heliograph CPV setup. Plate shift still limits tracking angles, but the cost is much cheaper.
CPV  plastic  microlens  plate  sun  tracking  concentrating  solar  cell  power  generator  Delicious 
september 2016 by asteroza
Glint Photonics
Some sort of weird reflective layer that turns clear when really hot, trapping light inside a tangential glass pane with edge concentration.
self  tracking  CPV  liquid  lens  concentrating  PV  solar  power  generator  materials  science  optics  research  technology  ARPA-E  Delicious 
august 2014 by asteroza
Steam from the sun
So at 10x solar concentration, the surface cover composite sheet composed of the graphite flake thermal absorber/boiler coupled to an underlying buoyant porous carbon air foam, creates steam pretty well. I assume the insulating factor of the carbon air foam reflects more heat into the boiler region to improve efficiency, rather than letting heat travel through and warm the bulk water.
graphite  flake  porous  structure  carbon  foam  buoyancy  buoyant  composite  steam  generator  solar  thermal  green  energy  concentrator  concentrating  Delicious 
july 2014 by asteroza
Our solar team sets a hot and steamy world record | News @ CSIRO on
Demo of a direct supercritical steam cycle solar thermal power generator. Naturally, this is a direct steam heating cycle, so no thermal storage to ride out shadows and the night...
CSIRO  proof  direct  supercritical  steam  cycle  solar  thermal  concentrating  power  generator  CSP  green  energy  proof-of-concept  Delicious 
june 2014 by asteroza
Wilson Solarpower | Concentrated Solar Generates Low Cost Electricity
Concentrating solar hot air microturbine power generator it seems, with fueled assist at night.
CSP  concentrating  solar  power  ceramic  heat  exchanger  hot  air  turbine  microturbine  generator  microgeneration  hybrid  gas  Delicious 
january 2014 by asteroza
Solar Concentrator | CPV | Solar Trackers | SunPower
C7 design is interesting. Appears to be a concentrating solar PV rig, but single axis tracking? Makes anchoring the mirrors against wind easier.
CPV  concentrating  solar  PV  power  generator  green  energy  single  axis  tracker  Delicious 
january 2014 by asteroza
Black Sun Planetary Solutions
Interesting collector design, based on on a blackbody cavity concept. Reduces costs since it doesn't use a vacuum tube receiver core, along with a low precision tolerant mirror reflector geometry. Seems to still require single axis tracking though, but 10 degrees is a lot easier to implement via ratchet mechanisms rather than continuous jackscrews.
CSP  concentrating  solar  thermal  power  generator  blackbody  cavity  parabolic  reflector  collector  design  green  energy  funnel  CPV  Delicious 
december 2013 by asteroza
Title Page
Claiming a low cost double reflector mirror arrangement lets these guys do high concentration levels. Doesn't really solve the tracking problem, at first glance, but the same plastic shape trick could be used with a trough collector. Interesting that they use a clear plastic cover lens, but what about age or dust related degradation?
energy  green  CPVT  PVT  CPV  CSP  generator  power  solar  concentrating  reflector  mirror  double  cassegrain  Delicious 
august 2012 by asteroza
Airlight - Home
Oddball mix of inflatable mirror/lens assembly mounted on a lightweight fiber reinforced concrete frame. Essentially makes a closed, slightly pressurized container for the energy production components, to protect them from rain and air contamination. Though the ETFE film getting discolored due to age/exposure reducing power output might be a problem. The collector is universal, in the sense that the central core receiver can be either the CSP type using pressurized air for the heat transfer fluid (which nominally gets dumped through a gravel tank for heat storage), or a water cooled CPV receiver. Recently did work with IBM using IBM chip semiconductor manufacturing techniques to make CPV water cooled solar cell panels with integrated cooling in the silicon.via microchannels.
photovoltaic  linear  support  parabolic  thermal  CSP  green  assembly  trough  concentrating  CPV  solar  mirror  PV  inflatable  generator  power  energy  Delicious 
august 2012 by asteroza
Semprius, Inc. :: Semprius is developing low cost, high performance concentrator photovoltaic (CPV) modules to make solar power generation economically viable in sunny, dry climates.
Interesting use of extremely small solar cells with concentrating optics. They claim they can run without heat fins for thermal management, but I have my doubts. Also claiming wide acceptance angles, but which might be true due to the optical geometry of the concentrators. The microprint transfer system allows wafer reuse, which is interesting...
CPV  concentrating  solar  PV  power  generator  green  energy  materials  science  research  technology  multilayer  gallium  arsenide  GaAs  multijunction  cell  microcell  wafer  substrate  reusable  manufacturing  microprint  transfer  Delicious 
december 2011 by asteroza
Nanoscale Research Letters | Full text | Tailoring photonic metamaterial resonances for thermal radiation
This seems to use the same kind of tricks as those luminescent solar concentrator plates, that internally reflect captured light and convert the frequency internally to retransmit to edge PV modules. Just shifting down to IR. The interesting bit is the prevention of reradiation through the top surface, which provides the potential for solar thermal power generation without concentrating mirrors using not well aligned surfaces of panels manufactured using chip fabrication techniques.
TPV  selective  absorber  photonic  metamaterial  resonance  crystal  thermal  emission  radiation  reradiation  solar  IR  concentrating  thermophotovoltaic  materials  science  research  technology  nanotechnology  optics  Delicious 
december 2011 by asteroza
Technique Solar : Finally. Solar Energy Being delivered at the Same Price as Fossil Fuels.
Interesting PVT type hybrid PV/thermal concentrating solar power generator. They are using packing tricks to slot in electronics and other hardware in the gap spaces between concentrator prisms. Still needs an active tracker though.
hybrid  CSP  concentrating  solar  photovoltaic  PV  thermal  power  generator  green  energy  PVT  Delicious 
november 2011 by asteroza
REhnu – Gigawatt Scale Solar
Apparently an astronomer is bringing large telescope techniques to CSP to reduce costs.
REhnu  CSP  concentrating  solar  thermal  power  generator  green  energy  large  telescope  optics  lens  hardware  Delicious 
november 2011 by asteroza
GE Combines Natural Gas, Wind, and Solar - Technology Review
So the idea is colocate a wind turbine array in the solar thermal heliostat field, and use the solar thermal heat to boost the steam turbine in a natural gas combined cycle rig. No mention of thermal heat storage from the solar thermal system, but considering the gas turbine can operate in peaking mode, there's less of an incentive to do so. The gas turbine also can do some load following moves to buffer the wind turbine output to take care of the wind power variability issue. It appears to spec for dry cooling the steam turbine. The core concept of a heavily integrated multisource powerplant is intriguing, and does cut the cost of some equipment (mainly steam turbines/generators, and transformers, and controls). However, if the integration is too high, then later expansions or uprates will unbalance the optimizations, potentially to the point that it may not be worth the costs.
turkey  GE  hybrid  natural  gas  turbine  combined  cycle  steam  HRSG  dry  cooling  concentrating  solar  thermal  wind  power  generator  green  energy  integrater  powerplant  Delicious 
june 2011 by asteroza
Proposing thermal energy store via molten salts with PCM materials to control heat profile and reduce container sizes
concentrating  solar  thermal  CSP  CPV  molten  salt  energy  storage  green  power  generator  PCM  additive  Delicious 
june 2011 by asteroza
Sunengy Develops New Floating Liquid Solar Arrays to Maximize Energy Output of Hydro Plants | Inhabitat - Green Design Will Save the World
Interesting take on on concentrating solar PV. Covers chip cooling and transmission lines in one stroke by using hydroelectric dam reservoirs. It may be possible to line some of the open space in the frame to work as a partial water barrier, to reduce evaporative losses for dams in hot/dry climates.
Sunengy  LSA  liquid  solar  array  floating  fresnel  lens  concentrating  concentrator  CSP  power  generator  green  energy  Delicious 
april 2011 by asteroza
ZENA System Co., Ltd. | WIND TOWER Power Generation
I'm having a little trouble figuring out how they can get over the traditional Betz limit, since they do substantial direction shifting of the massflow through the concentrator intake tower. The advantage of having the turbine on the ground could be similarly done with a traditional wind turbine connected via a mechanical or hydraulic transmission to a ground generator though.
japan  wind  turbine  power  generator  concentrator  concentrating  tower  intake  array  green  energy  Delicious 
january 2011 by asteroza
Why Solar Power
Some kind of hybrid setup, using CPV with gaseous coolant driving a gas turbine, with waste heat from the turbine finally recovered in a water heater like a microturbine CHP rig.
Kalahari  tribrid  tri-brid  hybrid  CPV  concentrating  PV  solar  thermal  collector  reflector  CHP  heat  storage  turbine  power  generator  Delicious 
december 2010 by asteroza
Solaris Synergy Unveils Floating Photovoltaic Panels | Inhabitat - Green Design Will Save the World
Hrm. Conceptually interesting, but CPV tracking needs brings on additional issues such as platform stability.
Solaris  ocean  marine  offshore  platform  CPV  concentrating  PV  solar  cell  power  generator  green  energy  israel  Delicious 
november 2010 by asteroza
Solar Cogeneration, Cogen, Power, Hot Water | Cogenra Solar
Basically this is a water cooled combined heat and power CHP concentrating solar PV trough design that recovers PV coolant heat for domestic hot water use. The low cost innovation seems to be the fresnel lens style segmented flat panel parabolic glass mirror array that makes up the trough, since flat mirrors in long planar sheets are cheap. New version also does AC via an adsorption chiller
photovoltaic  thermal  trough  concentrating  heat  cogeneration  trigeneration  cooler  cooling  power  generator  Cogenera  CHP  fresnel  parabolic  chiller  CSP  HVAC  green  solar  adsorption  reflector  combined  AC  PV  hybrid  energy  Delicious 
november 2010 by asteroza朝日新聞社):Solar-powered air-conditioning technology developed - English
Pimping a natural gas powered, solar assisted steam cycle vapor chiller air conditioner ( I would assume some sort of concentrating solar thermal setup)
solar  assist  assisted  HVAC  AC  cooling  natural  gas  vapor  cycle  japan  green  energy  CSP  concentrating  Delicious 
july 2010 by asteroza
Enel Inaugerates Molten Salt Thermal Energy Storage System for Archimede Solar Thermal Power Plant « Solar Thermal Magazine
Apparently this is a parabolic trough type solar thermal plant with molten salt in the collector tubes, which is a first apparently. I wonder how they keep the salt from freezing in the tubes at night? Do they drain it, or accept the losses associated with keeping it molten directly in the tube at night? They mention a combined cycle plant, so maybe they vampire heat from the plant to keep the salt hot?
molten  salt  heat  transfer  working  fluid  parabolic  trough  collector  CSP  concentrating  solar  thermal  power  generator  green  energy  Delicious 
july 2010 by asteroza
Solar Thermal Electrochemical Photo (STEP) Carbon Capture could Reduce Atmospheric CO2 to Pre-industrial Levels in Ten Years
Using an externally electrically driven molten lithium carbonate cell to crack CO2 down to C or CO, CO being fed into synthetic fuel processes, C for solid state long term sequestration/storage or as nanotube feedstock. Uses Solar CPV with thermal recovery to heat the cells and drive them electrically. Absolutely no mention of how the CO2 would be captured for input into the electrolysis cell (basically the same as a MSFC fuelcell, only without the hydrogen fuel) though.
step  solar  thermal  electrochemical  photo  CO2  lithium  carbonate  molten  electrolysis  cell  CO  syngas  synthetic  fuel  production  feedstock  CPV  concentrating  photovoltaic  MSFC  Delicious 
july 2010 by asteroza
Boeing Licenses XR700 Solar Power Technology To Stirling Energy Systems
I guess the plan is to use SES stirling engines to do cooling/energy recovery on the backside of the XR700 panels, as a mixed hybrid two stage direct electric and heat engine electric system? The XR700 doesn't seem to use a reflector concentrator like SES systems do, so the stirling engine has to be back mounted...
Boeing  SES  XR700  CSP  concentrating  solar  power  Spectrolab  triple  junction  cell  panel  stirling  engine  generator  green  energy  Delicious 
april 2010 by asteroza
Entech Solar
Did some research on SLA (stretched lens array) for space applications, but now focused on terrestrial solar
Entech  solar  SLA  stretched  fresnel  lens  array  optics  cell  power  generator  concentrating  CSP  CPV  PV  green  energy  concentrator  SOLAROSA  Delicious 
march 2010 by asteroza
Spectrum-splitting solar modules and Roadmap to 50% efficient Solar Cells
Interesting continuing research into the somewhat obvious ploy of using a optical spectrum splitter to separate light frequencies and send to them frequency optimized discrete solar cells, as a way to surmount the materials science problems of making stacked multijunction multispectrum optimized solar cells. If the light from the primary concentrator is being split by frequency, I wonder if you could do the trick of sending specific light bands left/right/down by using a double prism block? There is the overriding question of whether it would be cheaper to do the beam slitting before or after the concentrator?
high  efficiency  solar  cell  power  generator  materials  optics  science  research  technology  hardware  electronics  devices  green  energy  dichroic  prism  spread  spectrum  filter  light  beam  frequency  splitter  concentrator  concentrating  parallel  array  VHESC  Delicious 
october 2009 by asteroza
ZenithSolar > 75% Efficiency in the Field
Not generating electricity from waste CPV heat, but using the heat to supply hot water. Technically CHP?
water  waste  thermal  green  cell  concentrating  solar  CPV  israel  heat  cogeneration  combined  PV  hot  power  generator  CHP  hybrid  energy  Delicious 
september 2009 by asteroza
Cool Earth Solar: Reshaping Solar Energy
Hrm, I wonder if you could make an oversized air inflated structure to support long rows of these things in an airborne pattern, like a giant inflatable wall..
technology  green  energy  power  generator  plastic  solar  concentrator  aluminum  film  inflatable  concentrating  reflector  thin  cool  balloon  earth  CSP  pet  recyclable  Delicious 
february 2009 by asteroza
eSolar: Utility-Scale Solar Power
These guys seem to use semi-prefabricated CSP solar thermal plants (a standardized module consisting of paired reflector fields and a tower) to lower their costs, rather than just standardizing the reflector.
concentrating  solar  thermal  power  generator  technology  research  eSolar  green  energy  google  renewable  heliostat  Delicious 
november 2007 by asteroza

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