[ RadSafe ] solar advances

Tue Sep 1 20:18:50 CDT 2015

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
>
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