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Rikkitic
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  #3180394 11-Jan-2024 10:13
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There are already hydrogen vehicles tooling around the roads. Have any of them exploded yet? 

 

 





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SaltyNZ
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  #3180400 11-Jan-2024 10:27
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Rikkitic:

 

There are already hydrogen vehicles tooling around the roads. Have any of them exploded yet? 

 

 

 

 

 

 

Not to my knowledge, but neither have I, and I've been tooling around for 30 years.





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tdgeek

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  #3180411 11-Jan-2024 10:47
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SaltyNZ:

 

 

 

 

 

I think it's a definite possibility for stationary purposes where it can be used on site as produced (e.g. industrial hydrogen), and with long term storage for power production. But given all the other reasons we all know about, I don't ever see it overtaking batteries for light vehicles now. The only advantage it ever had (fast refueling) is already basically negated between bigger, cheaper batteries and increasing availability of fast charging. Maybe for specialised vehicles? On-site construction, for example; would be awkward to try to get a digger to a fast charger twice a day but you could bring in H2 trucks.

 

Aircraft - H2 powered aircraft can land light like conventional ones. The explosion risk is a concern though. It took hours for the fire on the JAL aircraft to be put out a few days ago; imagine if instead of relatively tame kerosene, it had been full of high-pressure hydrogen tanks?

 

And of course that's a general issue. If the thought of a lithium battery fire worries you, the thought of a hydrogen tank fire should terrify you.

 

 

The basement had a LOT of H bottles. Made at his house. By the Sun.

 

What volume of Hydrogen could give a car an acceptable range? The less means easier to mitigate.

 

Re lithium battery fires (from cars and e-bikes), not sure, but there have been a few in NZ I read recently somewhere. 

 

Hydrogen vs Petrol  https://www.google.com/search?client=safari&rls=en&q=hydrogen+car+fire+video&ie=UTF-8&oe=UTF-8#fpstate=ive&vld=cid:c7f254e6,vid:OA8dNFiVaF0,st:0

 

 




tdgeek

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  #3180420 11-Jan-2024 11:18
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A good watch, fire risks of petrol, LPG, Hydrogen and Lithium Ion

 

https://www.youtube.com/watch?v=msn0qkSDKK4

 

 


cddt
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  #3180544 11-Jan-2024 13:05
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tdgeek

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  #3180705 11-Jan-2024 20:35
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Perhaps email that to S. Jones Esq.


ezbee
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  #3180814 12-Jan-2024 09:57
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We probably need to be planning.
For how New Zealand can survive future 'Baked In' climate change.

 

This will keep happening for decades no matter what we do or believe about the causes.

 

How does our economy and population manage as temperatures increase, irrespective of Co2 and methane etc.
Changes in farming, methods, crops, rainfall, and even changes in sea level for low lying areas.

 

More than 'chicken feed' needed to fix Wellington trains
https://www.rnz.co.nz/news/national/506523/more-than-chicken-feed-needed-to-fix-wellington-trains

""
He said the 25C high on Thursday was not so severe that it should have crippled the city's rail transport system.

 

"Countries like France and Switzerland often have 36, 38, 39 degree days and they don't close down their railway system everytime. It's kind of ridiculous. Clearly, it's all about the funding and making sure the maintenance is carried out," Reeves said.
""

 

Why might you want to have a larger more efficient ferry with quick rail roll on roll off capability?
Why may you want to have a terminal able to better handle this quick turnaround built to better earthquake standard? Maybe even handle effects of sea level change over next 50-100 years.

 

A future with more expensive trucking and airfreight and travel, requiring a system with more resilience to changes in climate and our mobile geology?




Canuckabroad
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  #3180817 12-Jan-2024 10:04
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It doesn't affect equipment quite the same way it affects people, but regarding your comment about our temperatures not being significant compared to Europe - when you get days with 98% humidity like is being predicted for Auckland today (or like they see in the Pacific Islands) that has a pretty large impact on people even if the temperatures aren't desperately cold.  My family overseas are ironically experiencing the exact opposite, with very cold temperatures but with wind making it feel even worse for the people.

 

 

 

We don't have the same magnitude of difficulty in heating and cooling as they do in very hot or cold climates, but it's pretty tough to deal with sunny/hot/humid temps unless we have efficient housing intended to help us be comfortable (and most of us don't).


cddt
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  #3181079 12-Jan-2024 12:24
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ezbee:

 

We probably need to be planning.
For how New Zealand can survive future 'Baked In' climate change.

 

 

You would think so - but today's crop of politicians (of all stripes) are averse to any kind of strategic thinking beyond what happens in the next three years. (Politicians of the past were no different - consider the scrapping of the contributory superannuation scheme by Muldoon in 1976 - with the support of the majority of the electorate.)


gzt

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  #3181777 14-Jan-2024 18:04
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Fonterra continues progress towards 50% reduction by 2030:

pv-magazine: The new project is expected to reduce the natural gas required by the site and remove 495 tons of CO2e per year, equivalent to taking 140 cars off the road. It is Fonterra’s fourth site to upgrade its energy infrastructure within the last year, as the company works toward its Scope 1 and Scope 2 target of 50% emissions reduction by 2030.

Funded by EECA and Decarbonising Industry fund. Hopefully that fund will continue under the Luxon government.


kingdragonfly
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  #3181831 14-Jan-2024 18:50
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ezbee:More than 'chicken feed' needed to fix Wellington trains


I'm not trying to be flippant about Wellington trains, but how expensive could it be to cut expansion joints in the rails?

It will add a "clickty-clack" noise, but my guess is it's preferable to not running.

Trains have been using them since the mid 1700's.

https://youtu.be/9JuKqkZVgTU?t=170

geoffwnz
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  #3181871 14-Jan-2024 20:11
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kingdragonfly:
ezbee:More than 'chicken feed' needed to fix Wellington trains


I'm not trying to be flippant about Wellington trains, but how expensive could it be to cut expansion joints in the rails?

It will add a "clickty-clack" noise, but my guess is it's preferable to not running.

Trains have been using them since the mid 1700's.

https://youtu.be/9JuKqkZVgTU?t=170

 

It's apparently not the rails but the overhead power wires where they miscalculated the heat range and didn't set up the suspended weight tensioners correctly.





SaltyNZ
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  #3181875 14-Jan-2024 20:19
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gzt:  Hopefully that fund will continue under the Luxon government.

 

 

 

Don't hold your breath. They've already taken the Climate Emergency Response Fund to use for tax cuts, and I wonder just how many of the [pinkie in mouth] TEN THOUSAND EV CHARGERS [/pinkie] will somehow fail ACT's "robust cost benefit analysis to ensure maximum benefit for government investment"? After all, there are far more motorists who don't need 10,000 EV chargers than there are who do.





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Tinkerisk
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  #3181881 14-Jan-2024 20:43
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We (in GER) are not much better off with the current rail system. We have high-speed trains that don't run. Switzerland has slow trains that arrive super punctually. It even refuses to adapt its connecting trains to the unpunctuality of our racehorses, which I can well understand. Then there are recent strikes, repair work that has been neglected for years, etc. (I am referring to the long-distance rail network, local transportation works smoothly). What I find worse, as someone who is used to triple redundancy in airplanes, is that high-speed trains simply stop on the track in slightly sub-zero or hot temperatures - who developed this?

 

I always have this as an example of short-sighted faith in technology: Every day I get emergency calls from customers whose Internet handling (from public dual stack to public IPv6, CG-NAT IPv4) has been changed without prior notice and nothing works any more, or whose NAS is no longer easily accessible. In most cases, the SIP/VoIP for the telephones are also affected - they can no longer even make calls. Small freelancers are asking me to plan redundant Internet for them.

 

During a local flood disaster caused by climate change the year before last, the good old air raid sirens were simply dismantled - there are modern mobile phone masts everywhere ... and they were flooded at the same time. Great sausage, almost 100 people paid for that with their lives!

 

Too much is changed too quickly by too many people who have no idea. As an engineer, I am certainly not hostile to technology, but it is essential to take people with you!

 

 





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tdgeek

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  #3181884 14-Jan-2024 20:49
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Tinkerisk:

 

We (in GER) are not much better off with the current rail system. We have high-speed trains that don't run. Switzerland has slow trains that arrive super punctually. It even refuses to adapt its connecting trains to the unpunctuality of our racehorses, which I can well understand. Then there are recent strikes, repair work that has been neglected for years, etc. (I am referring to the long-distance rail network, local transportation works smoothly). What I find worse, as someone who is used to triple redundancy in airplanes, is that high-speed trains simply stop on the track in slightly sub-zero or hot temperatures - who developed this?

 

I always have this as an example of short-sighted faith in technology: Every day I get emergency calls from customers whose Internet handling (public IPv6, CG-NAT IPv4) has been changed without prior notice and nothing works any more, or whose NAS is no longer easily accessible. In most cases, the SIP/VoIP for the telephones are also affected - they can no longer even make calls. Small freelancers are asking me to plan redundant Internet for them.

 

During a local flood disaster caused by climate change the year before last, the good old air raid sirens were simply dismantled - there are modern mobile phone masts everywhere ... and they were flooded at the same time. Great sausage, almost 100 people paid for that with their lives!

 

Too much is changed too quickly by too many people who have no idea. As an engineer, I am certainly not hostile to technology, but it is essential to take people with you!

 

 

 

 

Politely I disagree. Humanity has shown over and over and over again we can do anything. Grab a sample, from an asteroid (37000 to 55000 mph) and return to Earth, no issue. Well its not easy but we can. But we battle with climate change in our own backyard?. $ and votes need to align, that is the issue


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