Environment & Energy

CentralMass

(15,265 posts)

26. I'm all for green solutions but in actually practice effective carbon capture

Mon Jul 24, 2023, 03:33 PM

Jul 2023

appears to be a myth.

There are areas where green hydrigen make sense.but until the efficiency of electrolyzing water and compressing hydrigen and transporting it improve it is a waste of energy for many applications. The law of thermodynamics are hard to overcome.

If I wanted to go off grid and add enough solar and or wind power to either charge an EV or power an electrolyzer and compressor to fuel a hydrogen fuel cell vehicle I know which choice I'd make. The hydrogen fuel cell vehicle would take st least 3x the number of solar panels to produce hydrogen vs charging the EV. There are economies of scale in both cases if you are doing it on a large scale but unless electrolyzer efficiency is greatly improved green hydrigen is a waste of energy.

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A dispatch from the dawn of the green hydrogen era [View all] Think. Again. Jul 2023 OP

What is the efficiency and amount of energy per kg used by the electrol,ers. CentralMass Jul 2023 #1

Efficiency... Think. Again. Jul 2023 #2

There are a number of ways to compare efficiency. CentralMass Jul 2023 #3

But why would you compare... Think. Again. Jul 2023 #4

Regardless if where the electricity is coming from, direct use of theelectricity is more CentralMass Jul 2023 #6

Okay... Think. Again. Jul 2023 #7

I would suggest that EV's are the long term solution for personal transportation and some other CentralMass Jul 2023 #10

Good point!... Think. Again. Jul 2023 #16

I am no expert (obviously) but there are advancements veing made. CentralMass Jul 2023 #24

I didn't know about those! Think. Again. Jul 2023 #25

There are several alternatives OKIsItJustMe Jul 2023 #34

Charging a battery is not "direct use of the electricity" Caribbeans Jul 2023 #31

Here is a link explaining the efficiencies of HFCV's and EV's CentralMass Jul 2023 #33

On the other hand, we need to look at the today's grid OKIsItJustMe Jul 2023 #5

Yeah but .... Think. Again. Jul 2023 #8

We only get to where we're going, if we understand where we are OKIsItJustMe Jul 2023 #9

I absolutely agree with you... Think. Again. Jul 2023 #12

Try this on for size... OKIsItJustMe Jul 2023 #15

Locate Chicago. Think. Again. Jul 2023 #17

Oh, that's easy. OKIsItJustMe Jul 2023 #18

This message was self-deleted by its author Think. Again. Jul 2023 #20

Let me make this question easier for you OKIsItJustMe Jul 2023 #27

Again... Think. Again. Jul 2023 #35

You've changed the question OKIsItJustMe Jul 2023 #37

Yes... Think. Again. Jul 2023 #38

I would look at a map OKIsItJustMe Jul 2023 #39

Cool... Think. Again. Jul 2023 #40

Have you ever been in such a hurry... OKIsItJustMe Jul 2023 #41

yes.... Think. Again. Jul 2023 #42

Classic horror movie trope: Making mistakes because you're in such a hurry to escape imminent death OKIsItJustMe Jul 2023 #43

Classic tragicomedy trope: Think. Again. Jul 2023 #46

"When in danger or in doubt, run in circles, scream and shout." OKIsItJustMe Jul 2023 #44

If you've ever stayed in a hotel or motel OKIsItJustMe Jul 2023 #45

Yes... Think. Again. Jul 2023 #47

S.T.O.P. OKIsItJustMe Jul 2023 #49

I'm beginning to think... Think. Again. Jul 2023 #50

Unfortunately, Think. Again. Jul 2023 #48

but you asked me the wrong question... Think. Again. Jul 2023 #19

Which point? Where? OKIsItJustMe Jul 2023 #21

the point we are at where we are emitting CO2... Think. Again. Jul 2023 #22

That is not the case. I read an article in Forbes citing data from one if the large CentralMass Jul 2023 #11

Yes, Think. Again. Jul 2023 #13

My "facts" may no longer be true. OKIsItJustMe Jul 2023 #14

I hope it doesn't get confusing when we... Think. Again. Jul 2023 #23

I'm all for green solutions but in actually practice effective carbon capture CentralMass Jul 2023 #26

I think what it comes down to is this, "It all depends." OKIsItJustMe Jul 2023 #28

Here is an article on where Japan has failed in its efforts to switch to a hydrogen economy CentralMass Jul 2023 #29

I may read it later. I've read what I suspect are similar analyses OKIsItJustMe Jul 2023 #30

That article on Japan... Think. Again. Jul 2023 #36

Hydrogen has its uses fir decarbonizung industrial processes CentralMass Jul 2023 #51

I agree. Think. Again. Jul 2023 #52

JUNE 2023: Japan earmarks $107 billion for developing hydrogen Caribbeans Jul 2023 #32