[ RadSafe ] solar advances

Wed Sep 2 12:06:39 CDT 2015

There should be no competition (though as unimaginative managers get involved there no doubt will be. 

Unlike most power sources, photovoltaic can work very well with other land uses.  It can be added to buildings and improve the buildings' performance by shading it, improving cooling.  Solar power arrays can even be used to improve grazing land, as research shows that providing up to 25% shade makes the animals more productive (OK, they were using trees for the shade, but the principle applies).  Solar power arrays can be oddly shaped, so they can fit in with other uses, such as shading canals to cut down on evaporation.  

If a little thought is applied solar power should improve farming, not harm it.

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Joseph Preisig
Sent: Wednesday, September 02, 2015 7:47 AM
To: parthasarathy k s; The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] solar advances

Hmmmm,

     Sounds like solar power will compete with farming for many acres of viable crop-growing land.  Not so good.

      Joe Preisig

On 9/1/15, parthasarathy k s <ksparth at yahoo.co.uk> wrote:
> Friends,
> I could gather some more information on the solar powered airport in 
> India.This airport was constructed in record time.The management 
> Cochin International Airport Limited (CIAL) is very progressive.In 
> 2013, They erected a 100 kWp to begin with and progressively raised it 
> to higher levels.
> The solar power system is grid connected with no battery stage.The 12 
> MWp solar power plant, comprising of 46,150 solar panels laid across 
> 45 acres near cargo complex now  produces 50,000 to 60,000 units of 
> electricity per day to be consumed for all its operational functions, 
> It needs 48,000 units of power per day.The entire power produced 
> during the day is fed to the State's electricity grid. The airport 
> buys back whatever it needs from the grid.The airport has a power 
> purchasing agreement with the Kerala State Electricity Board. CIAL is 
> a profit-making company . The Company paid 21% dividend to the 
> investors Kerala State is sunny. The humidity in the region is also 
> high. As Mike said
>  dust and biofilms can eat into the efficiency of solar cells. Hot 
> climate with lot of humidity can accelerate the growth of all sort of 
> little beasts including fungi!
> Yes maintenance issues may be humongous. We have to watch how 
> successfully it operates over periods of months and years. Reality 
> will set in once the celebrations are over.
> India plans to construct 100 GW of solar power in the next five years. 
> Many consider this as too ambitious.
> RegardsParthasarathy
>
>
>
>      On Wednesday, 2 September 2015, 2:41, "Brennan, Mike (DOH)"
> <Mike.Brennan at DOH.WA.GOV> wrote:
>
>
>  I think the best answer is, "It depends".
>
> You are correct that there are a lot of things on the ground that have 
> to be taken into consideration.  It would be foolish to not engineer 
> for whatever the extreme weather is for that location: the cost per 
> unit of energy goes up a lot if the entire array has to be replaced after every wind storm.
>
> Cleaning is probably going to be the biggest ongoing maintenance cost, 
> especially as it will be needed most often in the urban areas where 
> solar energy can be used with the least line losses.  I suspect that 
> dust and biofilms can really cut into efficiency.
>
> On the other hand, servicing a solar array has to be much cheaper per 
> unit of energy than servicing wind turbines.
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu
> [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of 
> JOHN.RICH at sargentlundy.com
> Sent: Tuesday, September 01, 2015 1:11 PM
> To: The International Radiation Protection (Health Physics) Mailing 
> List
> Cc: radsafe-bounces at health.phys.iit.edu
> Subject: Re: [ RadSafe ] solar advances
>
> Just a quick question  - -pls don't blow it out of proportion.
>
> As part of the nuclear industry (disclosure) I have a pretty good 
> understanding of nuclear plant maintenance requirements.  The question 
> is, what are the maintenance requirements for solar arrays.  It seems 
> like they're pretty trouble free on the ISS, but would it be the same 
> for an 'earthly' environment..  For example, could temperature 
> variations, dust, wind, storage batteries, etc., increase maintenance 
> costs enough to make a difference?
> thx - - jmr
>
>
>
>
>
> From:  Maury <maurysis at peoplepc.com>
> To:    radsafe at health.phys.iit.edu, JAitken at slb.com,
> Date:  09/01/2015 02:25 PM
> Subject:        Re: [ RadSafe ] solar advances Sent by:        
> radsafe-bounces at health.phys.iit.edu
>
>
>
> As you see below, this is a major airport that operates 24/7 . . .
>
> Cochin International Airport, Cochin, India
>
> Airport data
> IATA Code: COK    ATC Tel: +91 484 261 0121    Time: UTC+5.30 ICAO 
> Code: VOCI    ATC Fax: +91 484 261 0119    Runway: 3400m / 11155ft 
> (Hard) *Hours of operation: 24hrs*
> Customs: Yes ; Tel: +91 484 261 0072    Immigration: Yes ; Tel: +91 
> 484
> 261 0022    Fuel availability: Jet/Avgas Nearest other airports: 
> Cochin 15nm; Coimbatore 65nm; Calicut 65nm Best, Maury&Dog 
> [MaurySiskel maurysis at peoplepc.com] 
> ==================================================
> On 9/1/2015 12:50 PM, Doug Aitken wrote:
>> Schlumberger-Private
>> ________________________________________
>> It would be interesting to see how they store the electricity for
> night-time operation.
>> Or are they strictly a daytime operation?
>> Regards
>> Doug
>>
>> Doug Aitken
>> Cell phone: 713-562-8585
>> QHSE Advisor, D&M Operations Support
>> Schlumberger Technology Corporation
>> c/o Kathy Trosclair
>> 300 Schlumberger Drive, MD15,
>> Sugar Land, Texas 77478
>>
>>
>>
>> -----Original Message-----
>> From: radsafe-bounces at health.phys.iit.edu [
> mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of parthasarathy 
> k s
>> Sent: Tuesday, September 01, 2015 12:08 PM
>> To: The International Radiation Protection (Health Physics) Mailing 
>> List
>> Subject: Re: [ RadSafe ] solar advances
>>
>> Friends,
>> India has reportedly the world's first fully solar powered airport at
> Cochin Capacity 1.1 MW The link:
>> Indian airport is the first in the world 100% powered by renewable
> energy
>>
> ----------------------------------------snipped-----------------------
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