Results 1 to 9 of 9

Thread: Highly transparent solar cells could be boon for green energy

  1. #1
    HEXUS.admin
    Join Date
    Apr 2005
    Posts
    26,206
    Thanks
    0
    Thanked
    1,406 times in 528 posts

    Highly transparent solar cells could be boon for green energy

    Harvesting only invisible light, the cells are currently only approx 5 per cent efficient.
    Read more.

  2. #2
    Admin Saracen's Avatar
    Join Date
    Jul 2003
    Posts
    17,476
    Thanks
    833
    Thanked
    2,993 times in 2,121 posts

    Re: Highly transparent solar cells could be boon for green energy

    Well, interesting, but .....

    - cost?
    - replacement or add-on?

    If replacement, then personally, having just spent thousands replacing windows throughout my home, I'm NOT ripping it out again.

    If add-on, then "highly" transparent sounds to me the way an advertising exec tries to sell "not completely" transparent. If so, the degree of non-transparancy would have to be extremely small, to the point of visually undetectable, before I'd be prepared to stick 'em all over my expensive new windows.

    Finally, and still personally, this comes down to cost, and to whether they can pay back capital outlay promptly enough. As it is, my entire annual electricity bill is modest, and a good chunk of it occurs either at night (not much light about) or via a very small number of high load uses, like the oven for a Sunday roast, or the tumble dryer. Solar cells typically, for the space I have available, can't provide peak demand loads or overnight, without huge and unviable further expense in battery storage.

    I support any and all developments in current and new forms of solar as self-evidently 'a good thing', but for me, it MUST be cost-effective and, so far, isn't.
    Noli nothis permittere te terere.


  3. #3
    Senior Member
    Join Date
    Feb 2012
    Posts
    462
    Thanks
    2
    Thanked
    40 times in 25 posts

    Re: Highly transparent solar cells could be boon for green energy

    I expect that if it turns IR into electricity, then it will have a cooling effect on the room the window is on.

    So considering an office building, where this would be used initially, and assuming that they get it to 10% efficiency, every square metre of window can generate a peak of 100W, and also save on air conditioning within the building.

    The Shard has 56,000 square metres of surface area, although only 1/4 is going to get sun all day round (and another 1/4 will get morning sun, and another quarter afternoon sun, but I'll ignore them unless this film is cheap), which is 14,000 square metres, or 1.4MW of power generation at peak.

    Compare this to The Shard's integrated gas power plant:

    "This combined heat and power (CHP) plant will provide both 1.131MW of electricity and 1.199MW of hot water at high efficiency (85.3% total, 41.4% electrical) to the surrounding area."

  4. #4
    Registered+
    Join Date
    Feb 2013
    Posts
    54
    Thanks
    0
    Thanked
    1 time in 1 post

    Re: Highly transparent solar cells could be boon for green energy

    Certainly part of the dislike of traditional renewable energy solutions is that people don't want to look at them. Integrating something like this in such a way that doesn't add anything to an otherwise standard building appearance has I think great potential.
    Though as said cost needs to improve a lot to take on fossil fuel alternatives which in terms of value simply don't have competition from renewables in my opinion.

  5. #5
    Senior Member
    Join Date
    May 2014
    Posts
    869
    Thanks
    142
    Thanked
    50 times in 46 posts
    • Xlucine's system
      • Motherboard:
      • Gigabyte Z97MX Gaming 5
      • CPU:
      • i5 4690K @stock, until I upgrade my graphics
      • Memory:
      • 16GB @2133 11-11-11-27
      • Storage:
      • Crucial MX500 512GB, 2TB storage
      • Graphics card(s):
      • EVGA 980ti
      • PSU:
      • Seasonic S12G-550
      • Case:
      • Silverstone TJ08-E

    Re: Highly transparent solar cells could be boon for green energy

    Interesting - I've heard that solar cells tend to suck up everything with a wavelength less than some critical value, so engineering a solar band pass filter is impressive.

    Quote Originally Posted by sykobee View Post
    I expect that if it turns IR into electricity, then it will have a cooling effect on the room the window is on.

    So considering an office building, where this would be used initially, and assuming that they get it to 10% efficiency, every square metre of window can generate a peak of 100W, and also save on air conditioning within the building.

    The Shard has 56,000 square metres of surface area, although only 1/4 is going to get sun all day round (and another 1/4 will get morning sun, and another quarter afternoon sun, but I'll ignore them unless this film is cheap), which is 14,000 square metres, or 1.4MW of power generation at peak.

    Compare this to The Shard's integrated gas power plant:

    "This combined heat and power (CHP) plant will provide both 1.131MW of electricity and 1.199MW of hot water at high efficiency (85.3% total, 41.4% electrical) to the surrounding area."
    Bingo. This competes with IR-reflective films, and unlike them can generate profit.

  6. #6
    Admin Team peterb's Avatar
    Join Date
    Aug 2005
    Location
    Southampton
    Posts
    17,009
    Thanks
    2,150
    Thanked
    2,735 times in 2,189 posts
    • peterb's system
      • Motherboard:
      • Nascom 2
      • CPU:
      • Z80B
      • Memory:
      • 48K 8 bit memory on separate card
      • Storage:
      • Audio cassette tape - home built 5.25" floppy drive
      • Graphics card(s):
      • text output (composite video)
      • PSU:
      • Home built
      • Case:
      • Home built
      • Operating System:
      • Nas-sys
      • Monitor(s):
      • 12" monocrome composite video input
      • Internet:
      • No networking capability on this machine

    Re: Highly transparent solar cells could be boon for green energy

    Quote Originally Posted by sykobee View Post

    The Shard has 56,000 square metres of surface area, although only 1/4 is going to get sun all day round (and another 1/4 will get morning sun, and another quarter afternoon sun, but I'll ignore them unless this film is cheap), which is 14,000 square metres, or 1.4MW of power generation at peak.
    It will be roughly a third as solar PV cells don't need direct sunlight to generate an output. And it doesn't have to be either/or, the solar panels could be in addition to the CHP output.
    (\__/)
    (='.'=)
    (")_(")

    Been helped or just 'Like' a post? Use the Thanks button!
    My broadband speed - 750 Meganibbles/minute

  7. #7
    Member
    Join Date
    Aug 2006
    Location
    London
    Posts
    133
    Thanks
    3
    Thanked
    3 times in 2 posts
    • Savas's system
      • Motherboard:
      • Asus P6X58D-E
      • CPU:
      • Intel Core i7 950 @ 3.07 GHz
      • Memory:
      • 6GB Corsair
      • Storage:
      • SanDisk SSD PLUS 240 GB Sata III 2.5 inch Internal SSD
      • Graphics card(s):
      • Gigabyte GeForce GTX 460
      • PSU:
      • Corsair HX850W
      • Case:
      • LIANLI PC-8FI
      • Operating System:
      • Windows 10
      • Monitor(s):
      • LG 32LF580V
      • Internet:
      • 80Mbits (Plusnet)

    Re: Highly transparent solar cells could be boon for green energy

    Quote Originally Posted by Saracen View Post
    Well, interesting, but .....

    - cost?
    - replacement or add-on?

    If replacement, then personally, having just spent thousands replacing windows throughout my home, I'm NOT ripping it out again.

    If add-on, then "highly" transparent sounds to me the way an advertising exec tries to sell "not completely" transparent. If so, the degree of non-transparancy would have to be extremely small, to the point of visually undetectable, before I'd be prepared to stick 'em all over my expensive new windows.

    Finally, and still personally, this comes down to cost, and to whether they can pay back capital outlay promptly enough. As it is, my entire annual electricity bill is modest, and a good chunk of it occurs either at night (not much light about) or via a very small number of high load uses, like the oven for a Sunday roast, or the tumble dryer. Solar cells typically, for the space I have available, can't provide peak demand loads or overnight, without huge and unviable further expense in battery storage.

    I support any and all developments in current and new forms of solar as self-evidently 'a good thing', but for me, it MUST be cost-effective and, so far, isn't.
    Those are not really the "buts", I mean your home may not be the ideal place to first put these things into use. Also you can't really be asking about cost this early, even as this forum is all about computers we know early development hardware costs a lot but settles down. If new public buildings with a lot of glass use this and make considerable energy from it, then wouldn't this be a step forward?

    Also your windows are not completely transparent either. Again though, this isn't for your home, but places where nobody will mind the 1-5% loss (guessing) of light as there's enough windows that there's already too much sun light. Based on the pictures, it really looks normal or similar to an average window.

    I don't know what support you're providing, but if by your comments alone, it doesn't seem like you're supporting.
    Last edited by Savas; 26-10-2017 at 02:21 PM.

  8. #8
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    7,792
    Thanks
    300
    Thanked
    738 times in 638 posts
    • DanceswithUnix's system
      • Motherboard:
      • M5A-97 EVO R2.0
      • CPU:
      • FX-8350
      • Memory:
      • 16GB ECC 1333
      • Storage:
      • 660GB Linux, 500GB Games (Win 10)
      • Graphics card(s):
      • Sapphire Nitro R9 380 4GB
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 24 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Samsung 2343BW 2048x1152
      • Internet:
      • 80Mb/20Mb VDSL

    Re: Highly transparent solar cells could be boon for green energy

    Quote Originally Posted by sykobee View Post
    I expect that if it turns IR into electricity, then it will have a cooling effect on the room the window is on.
    Interesting, so not much use on a greenhouse then?

  9. #9
    SeƱor Member
    Join Date
    Nov 2013
    Posts
    271
    Thanks
    15
    Thanked
    22 times in 20 posts

    Re: Highly transparent solar cells could be boon for green energy

    Quote Originally Posted by Savas View Post
    I don't know what support you're providing, but if by your comments alone, it doesn't seem like you're supporting.
    Meet Saracen.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •