Rocksolid Light

News from da outaworlds

mail  files  register  groups  login

Message-ID:  

BOFH excuse #414: tachyon emissions overloading the system


sci / sci.electronics.misc / Re: Ancient refrigerators

SubjectAuthor
o Re: Ancient refrigeratorsJim Jackson

1
Subject: Re: Ancient refrigerators
From: Jim Jackson
Newsgroups: sci.electronics.misc
Organization: A noiseless patient Spider
Date: Fri, 19 Feb 2021 17:57 UTC
References: 1 2
Path: eternal-september.org!news.eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: jj@franjam.org.uk (Jim Jackson)
Newsgroups: sci.electronics.misc
Subject: Re: Ancient refrigerators
Date: Fri, 19 Feb 2021 17:57:18 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 34
Message-ID: <slrns2vuvu.2un.jj@iridium.wf32df>
References: <0dc0958a-d9b8-4242-bc5b-9ceaac41271an@googlegroups.com>
<DYmdnf3G_bucu7L9nZ2dnUU7-bPNnZ2d@giganews.com>
Injection-Date: Fri, 19 Feb 2021 17:57:18 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="ad859cfe3b27ef94ba7612b1705b7102";
logging-data="7059"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+hagVCGBUwIL2Z8JIDTMtWoYMpgTX2ENw="
User-Agent: slrn/1.0.3 (Linux)
Cancel-Lock: sha1:vnPXfIa67hvdV9MwRUrcjcsSxVc=
View all headers

On 2021-02-19, Jon Elson <elson@pico-systems.com> wrote:
> Rich D wrote:
>
>> How did they make ice, in the days before electricity?

Electricity? I once lived in a house with no electricity supply. We used
a Kerosene fridge. I believe there are also propane fridges.

>>
> In the early days, they cut it out of frozen lakes and rivers and stored it
> in ice houses insulated with thick layers of hay.

Usually a deep hole in the ground, often an impressive stone/brick
superstructure over over the top, and a trap corridor with doors each
end to keep any heat out.

There was also a trade in ice from areas where it was cold.

See https://en.wikipedia.org/wiki/Ice_trade

>
>> And did they figure it out empirically, prior to the
>> development of thermodynamic theory?
> Mechanical refrigeration was developed about 1850, but took a while to
> become widely commercially available. I think the physics was pretty well
> understood by that time.

making ice on a commercial scale came well before home fridges - mostly
the ice was for the fish and meat trade, but you could buy in blocks of
ice for domestic use.

There is a pretty good history here ...

https://www.reddyice.com/blogs/detail/ID/12/the-chilling-history-of-ice

1

rocksolid light 0.9.8
clearnet tor