Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

But one can bring hydrogen with an electric truck…


Hydrogen work vehicles require hydrogen storage and delivery. PEV work vehicles can also use hydrogen powered generators on site but they can also use anything from an on-site solar to a standard grid connection.

As long as 98% of our hydrogen is coming from fossil fuels it’s only a net negative here.


Whatever, good luck hauling electricity on a truck. We’re talking in the context of „you’re building a new highway, good luck getting enough electricity to charge those machines in that place”. What, you gonna haul your solar farm as the construction moves on for dozens of miles?


Why exactly would you want to haul electricity using a truck a rather than wires exactly?

PEV’s are often more convenient and cheaper to use on a work site than diesel and are actually being adopted for that reason, it’s hydrogen that’s lacking distribution infrastructure.


> and are actually being adopted

Care to share some examples?


Look at the caterpillar line of EV vehicles they are becoming quite popular. Ex: 798 AC a 372 metric ton payload truck https://www.cat.com/en_US/products/new/equipment/off-highway...

At the other end mini EV excavators are also becoming quite popular ex: Volvo ECR25, Bobcat E19e, etc


Are you seriously showing me a mining truck and some micro machines you can use to dig a trench in your garden as an example of EV machines being „adopted”?

Do you even know what makes those mining trucks functional for this use case? The deeper the mine, the more effective they are!


Yes, people buying EV work vehicles are examples of EV work vehicles being adopted, which is pushing manufacturers to make ever more diversified product lines.

A work crew putting in a trench really benefits from the equipment being quit. What you think of as “digging in your garden” is just one of plentiful examples of home construction scale equipment. There’s a lot of equipment that fits such purposes like rollers for people’s driveways etc.

Here’s a preproduction equivalent to the hydrogen prototype mentioned in the article:

320 Electric Medium Excavator

Operating weight: 22–24 metric tons | 48,501–52,911 lb Bucket capacity: 1.3 m³ | 1.7 yd³ https://www.cat.com/en_US/by-industry/construction/electric-...


What’s „long single charge run” an equivalent of?


Not sure of what you’re asking.


We started this thread from someone asking „will it do 8 hours of work on a single charge”. The little 301.9 digger from cat proudly says „ Run time: up to 8 hours on a single charge”, the big one says „Long single charge run time allows for ability to perform intended work with minimal disruption”. Will it do 8 hours? Otherwise I root for a hydrogen digger.


Looking at that battery pack 320KWh vs typical fuel consumption on similar machines and its battery is oversized for 8 hours of work when new and could still handle that with significant degradation.

That said, people don’t work 8 hours without taking a break so arguably a smaller battery might be a good tradeoff.


Is it time to bring up swappable batteries again? You could truck in a trailer just like diesel.


do that




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: