franckl

6 ms·

1.
by franckl 2y ago
There are 56 reactors in France, they never went offline at the same time. It happened that half went offline but no more than that
2.
by franckl 2y ago
Fyi you can get a stainless steel under sink RO system for less than 200usd on amazon, no plastic piping either.
3.
by franckl 3y ago
Very different experience here, to the point I will not buy a VW again. Not a single OTA update since I bought it in October 2021, 3 recalls already and they don't even have the parts available for the last door issue recall. Their mob
4.
by franckl 3y ago
Do you have a source? I can't find anything about it
5.
by franckl 3y ago
https://www.nextinpact.com/article/71103/gandi-fusionne-avec... Google translate it from french. Basically the new owners are known for not caring about customer service. Gandhi email service will probably go or
6.
by franckl 3y ago
Good question! I would say advances in numerical simulations, cheap renewable energy, and a lot of luck/perseverance (we would not have found this technology without spending 3 years on the first idea that didn't work out)
7.
by franckl 3y ago
It is a combination of things. We hesitated a lot to do a crowdfunding but : - a corrosion issue nearly killed us and we had to "reboot" - our team was in full lockdown in France for a while and we could not prototype as easily -
8.
by franckl 3y ago
at a mathematical conference :)
9.
by franckl 3y ago
You are correct, even though your last sentence wasnt necessary... Please consider a use case where an industrial user install a thermal storage like this one https://www.kyotogroup.no/technology They may need CO2 free proc
10.
by franckl 3y ago
I agree! I would love to see the carbon intensity of each product I buy or some kind of scale from A to F.
11.
by franckl 3y ago
Stirling engines like ours can go at cryogenic temperatures too :) They are used to reliquify natural gas at LNG terminals, but we decided to focus on industrial heat for now. You are correct. In our case, we can go from ambient air to the
12.
by franckl 3y ago
We are building more than a heat pump, it is a novel stirling architecture, that is, a machine that converts electricity to heat, and heat to electricity. The idea is summarized on this picture https://imgur.com/a/f5T1N
13.
by franckl 3y ago
I can't go into details for confidentiality reasons but we published a paper last December on one of the simulation models : https://link.springer.com/chapter/10.1007/978-3-031-12019-0_...
14.
by franckl 3y ago
We started in 2016 with just an idea, and we probably encountered every problem you can think of ! - hard to raise funds for large deeptech projects (thank you YC and Wefunder for unlocking that one!) - a corrosion issue in 2019 that nearly
15.
by franckl 3y ago
we published a calculator if you would like to dig deeper! https://airthium.github.io/airthium.com-calculator/ The COP gets lower as the temperature difference increases as you can expect.
16.
by franckl 3y ago
We are building the world's highest temperature heat pump. It can reach 1000℉, when other commercial heat pumps usually reach a maximum of 320 ℉. It is a big deal because factories have to rely on polluting natural gas to produce their
17.
by franckl 3y ago
I would be happy to have that. Most of the time it is 50 to 90kW at the 2 EA stations I use in Texas
18.
by franckl 3y ago
Franck here, Airthium's cofounder (YC S17). Happy to answer all questions about our ultra high temperature industrial heat pump!
19.
by franckl 3y ago
It says heat energy
20.
by franckl 3y ago
Heat pumps extract additional heat from a "cold source" like ambiant air. They do output more heat than resistive heating.
21.
by franckl 3y ago
not CAD but we built our own open source FEA tool. see https://tanatloc.com
22.
by franckl 3y ago
How much GHG does the rocket emit?
23.
by franckl 4y ago
We dont use refrigerant and it is a single HP with a 930F lift (so huge temperature difference between source and sink temperature). It is more than a heat pump, it is a new Stirling engine architecture, so it can run in reverse (heat to el
24.
by franckl 4y ago
If you are into heat pumps, our team at Airthium (YC S17) is building an industrial heat pump able to reach 1000℉. Most HP are limited to 360℉ so it is a big deal in terms of industrial heat decarbonization potential (3% of the world's
25.
by franckl 4y ago
if you are interested in mechanical contact, we developed a symmetrical algorithm (no master/slave) and can make it available for you on https://tanatloc.com
26.
Tanatloc – An open source FEA software than runs on your laptop or in the cloud(tanatloc.com)
2 points by franckl 4y ago|1 comments
27.
by franckl 4y ago
Hi all. Franck here, cofounder at Airthium (YC S17 / https://airthium.com ) We make a breakthrough heat engine to decarbonize industrial heat and electricity production. Part of that effort includes a lot of numerical simula
28.
by franckl 4y ago
Prevention is better than cure... I don't find this price surprising unfortunately. A strong social security net and healthcare for all would cost much less to society and cause less suffering.
29.
by franckl 4y ago
We are targeting the industrial heat market first. Our proprietary electric heat engine (=a heat pump) can generate heat up to 1000℉, and we will use it to replace industrial gas boilers and dryers with a CO2 free solution. We are in discus
30.
by franckl 4y ago
The long term goal is to replace NG. What we are building is the functional equivalent to a natural gas fired powerplant, without the CO2 emissions.

More ›