Subj : Re: coldbrew coffee
To   : Charles Pierson
From : Wilfred van Velzen
Date : Wed Nov 18 2020 11:45:48

Hi Charles,

On 2020-11-17 16:29:27, you wrote to me:

 WV>>>> In a storm anything can happen...
 AA>>> How are the homes in your part of the world heated?
 WV>> At least 95% has central heating by natural gas. Almost every home
 WV>> in the Netherlands is connect to the underground gas-net.
 AA>>> I am guessing there not many chimneys.
 WV>> Well the central heating boiler needs to expel it's exaust gasses
 WV>> somewhere.
 AA>>> I am reading that Netherland is switching to hydrogen gas
 AA>>> everywhere.
 WV>> Not that I'm aware of...

 CP> I'd certainly hope not. Hydrogen gas isn't really a good idea, looking back
 CP> historically.

They have come a long way in safely storing Hydrogen gas, since the days of the big blimps!

And Hydrogen seems to be one of the ways to go for storing and transporting energy in the future. It has a 3 times higher energy density than petrol, its exaust gas is just pure water, no CO2. Unless there is a big breakthrough in battery technology, you can't use it for for instance airplanes. They are just to heavy, and it costs too much time to recharge them. Hydrogen would work for airplanes. And also for road transport, where you have to travel long distances, and recharging for hours isn't an option...

Bye, Wilfred.

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