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Kolumam

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Reply with quote  #1 
Hi All,

I wanna calculate the number of equivalent trees from CO2 avoided(kg). Assuming the solar is producing electricity for 20 years.

Rick H Parker

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Reply with quote  #2 
The standardized CO2 offset for solar produced electrical energy is 1.2 lbs of CO2 per kWh.
The average mature tree absorbs CO2 at a rate of 48 pounds per year.
Figure out how much solar produced electrical energy you use per year.

With the three pieces of data you can do the calculations your want to do.

For every 40 kWh (48/1.2) of solar produced electrical energy the CO2 offset is equal to the CO2 absorb by a tree in a year.

12000 kWh per year = 12000/40 = 300 mature trees.

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Rick H Parker
Kansas, USA
Electronics Engineering Technologist
Kolumam

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Rick,

I am confused with the units. I am using Co2 in kg. What's the conversion factor for CO2 to equivalent trees planted?
Rick H Parker

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Reply with quote  #4 

What's the conversion factor for CO2 to equivalent trees planted?

Lbs = pounds

1 Kg = 2.20462 Lbs.
1 Lbs = 0.453592 Kg
48 * 0.453592 Kg = 21.772 Kg


21.772 Kg of CO2 offset = 1 mature tree for a year. 
21.772 Kg per year = 1 mature tree.

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Rick H Parker
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gbwillson

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Reply with quote  #5 
With the current eruption of Kilauea volcano, note that volcanoes, including submarine volcanoes, release 600,000,000 TONS of Co2 (272,155,000Kg) each YEAR.

We need to plant a lot more trees to offset this massive amount of naturally produced Co2. Based on Rick's numbers above, we need to plant over 12.5 million trees each year to offset the Co2 released from volcanoes. Going solar is a great way to help, and certainly easier than planting so many trees!

Greg in MN
Rick H Parker

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No-Till farming makes a huge impact.
 

The average car emits 4 tons of CO2 per year.  It would take 167 trees per car to offset the CO2. 1.015 billion car world wide ... 168 Billion trees.

It not just one thing that got us into this mess. It going to take lots of changes to out of this mess.

The best way of all ... use less carbon based fuels.  Buy quality products that last.




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Rick H Parker
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stmbtwle

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Reply with quote  #7 
Agree, but I don't see how we'll make it happen. The world economy seems to be based on fossil fuels and disposable products. Changing it will take a long time.
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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
Rick H Parker

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It is pretty clear market forces alone will drive the transition.  We need to socialize the problem by investing in R&D to make clean energy technologies more affordable.  Pretty much what goes on here, on a scale that not big enough. The Paris agreement is the same, a  non-legally binding agreement to work on the problem cooperatively.
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Rick H Parker
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stmbtwle

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Reply with quote  #9 
I hope so, but established forces will fight it tooth and nail. We do need to invest but who will do the investing? Big oil is not likely to support a competing technology.

Solar is getting cheaper by the day, but STORAGE continues to be a problem. Lithium is scarce and expensive. Until we get a cheap, powerful, lightweight battery, we'll never electrify transportation, and that's where a lot of the consumption is.

And then there's plastic and our throwaway lifestyle.

I hope it happens, but I don't see it in my lifetime. The bubbas are still driving their trucks.

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
Rick H Parker

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Reply with quote  #10 
Some of the big oil will fight. Others were opposed to pulling out of the Paris agreement, they seen the writing and convert themselves from Oil companies to Energy companies.

Yep,  storage is the Achilles heel that has been holding electrical energy production back since Edison installed the first generators. They have known all along that with cost effective storage, any means of production would become more economical. Whomever comes up with a anode and cathode suitable for a secondary manganese-manganese battery will become very wealthy.

And then there's plastic and our throwaway lifestyle.

That what you get with "supply side economics"

The bubbas are still driving their trucks.

Make all trucks what they are designed to be, commercial vehicles. Subject them all to commercial regulations.


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Rick H Parker
Kansas, USA
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