Thank you Bill for all your expertise on this subject. I came across this Youtube video demonstrating how to use the Mirai’s Homelink controls to open a garage door:
https://www.youtube.com/watch?v=e7XjqEaWExY The last few seconds show a Mirai opening the garage; assuming to park the car in the garage and close the door. However, I looked at several other videos of the same generic format and **NONE** of them show a Mirai entering or leaving a garage. In one case, there is a car already parked there and it has a spoiler on its trunk. I'm wondering if they are hedging their bets?? For instance, in building apartments, there are standards with regard to fire retardant treated wood products. It makes a big difference in time on whether the fire retardant is "painted" on or it is infused into the lumber. The companies that paint it on are always trying to loosen the standards thus giving people less time to evacuate their apartment in the event of a fire. The infused products are more expensive. So there is an economic incentive to loosen and game the standards. From what you are implying, if sheltering a Mirai in a closed garage goes against hydrogen safety standards, this might be an attempt to provide the impression of normalcy without a Mirai actually entering a garage thereby actually violating the standards (and subsequent lawsuits, if something goes wrong). However, is there such a standard against garaging HFCEVs or are they too new for a standard to have been developed? On Fri, Sep 10, 2021 at 7:59 AM Bill Dube via EV <ev@lists.evdl.org> wrote: > > There is no doubt that the H2 systems, including the tank, are > thoroughly leak checked. H2 is straightforward to detect in minute > quantities. > > However, the world is an imperfect place. Screws fall out. Leaks occur. > > I am surprised that they omit advising against parking indoors in the > owner's manual. > > Bill D. > > On 9/10/2021 5:04 PM, Peri Hartman via EV wrote: > > I suspect it's far worse than that. H2 will pool against the ceiling > > but it will probably leak through pretty quickly and fill up the joist > > cavity, and then the ceiling of the floor above, and so on. > > > > Maybe the Mirai tank system is really tight. Otherwise, I'm really > > curious: why haven't there been any reported H2 explosions ? > > > > Peri > > > > << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> > > > > ------ Original Message ------ > > From: "Bill Dube via EV" <ev@lists.evdl.org> > > To: ev@lists.evdl.org > > Cc: "Bill Dube" <billd...@killacycle.com> > > Sent: 09-Sep-21 20:00:22 > > Subject: [EVDL] "H2 is lighter" (Was OT: fuel cell mining truck) > > > >> Indeed, H2 is very buoyant in air and rises extremely quickly. > >> > >> However, this means that it collects and concentrates at the high > >> points of the ceiling in an enclosed space. Typically, the garage > >> door opener is also in that space, as well as light fixtures, etc. > >> The garage door opener has relays with contacts. Older fluorescent > >> lights also have contacts in the small starter. There are all sorts > >> of ignition sources at or near the ceiling where the H2 will > >> concentrate. > >> > >> Thus, garaging a H2 fuel cell vehicle is against the regulations, for > >> a multitude of reasons. > >> > >> Having worked with liquid hydrogen in a hydrogen safe building for > >> many years, I am acutely aware of the hazards it presents and the > >> measures one must take to reduce the risk of those very real hazards. > >> > >> Bill D. > >> > >>> 3.) With regard to garaging, I was reading a while back that the > >>> _hydrogen is so light that it would float and disperse_ readily > >>> generating the idea a HFCEV could be garaged. If I find the article I > >>> will post it but the comments you found in a passage about getting it > >>> out and into a well-ventilated space makes me want to find an > >>> authoritative source. It may be the difference between a slow leak > >>> and something faster. > >> > >> -------------- next part -------------- > >> An HTML attachment was scrubbed... > >> URL: > >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210910/83dc1fe0/attachment.html> > >> _______________________________________________ > >> Address messages to ev@lists.evdl.org > >> No other addresses in TO and CC fields > >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > >> ARCHIVE: http://www.evdl.org/archive/ > >> LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > _______________________________________________ > > Address messages to ev@lists.evdl.org > > No other addresses in TO and CC fields > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/ > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
