A danger that kills is if concentrated 1 whiff deadens the nose and the smell is gone. Then you think you are ok and you are not.
Kirk -----Original Message----- From: Martin [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 25, 2003 7:04 PM To: biofuel@yahoogroups.com Subject: RE: [biofuel] Solar powered air conditioning that really works with temps as low as 80C (176F) http://www.marinefirefighting.com/Pages/Newsletters/Newsletter5.htm "Early refrigeration used ammonia (NH3) throughout the system. This proved very hazardous whenever leaks developed in the refrigerated areas where workers might enter. Ammonia vapors are irritating and prolonged exposure and inhalation can cause serious injury and may be fatal. (Some of the 'Old Buffalos' on the Fire Department will remember the ammonia leaks in the old refrigerators. When the housewife was defrosting the freezer she would speed up the process by chopping out blocks of ice with a knife or screwdriver. When she punctured the ammonia refrigerant line she and her neighbors would go running.) We would carry the refrigerator out to the street where the ammonia would vent itself 'Exposure to 0.25 to 0.65 percent ammonia in the air for one-half hour is sufficient to cause death or serious injury.'" But of course, many deadly things are used around us all the time, so I guess it wouldn't be too bad with sufficient safety precautions. Large cooling systems [warehouses] use ammonia because it is cheaper. --- Martin Klingensmith nnytech.net infoarchive.net > -----Original Message----- > From: Hakan Falk [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 25, 2003 8:28 PM > To: biofuel@yahoogroups.com > Subject: Re: [biofuel] Solar powered air conditioning that really works > with temps as low as 80C (176F) > > > James, > > Maybe I am starting to get old, but until around 35 years ago it was the > dominant method in refrigerators. It is also a very common in nature and > if > I am not wrong it is to consider as a biogas, at least when I was young > and > worked with horses. Concentrated it is dangerous, but not more than some > chemicals you use for making biodiesel. From an energy saving view, a > solar > driven air conditioner would be great product. It is built on "ready for > use" technologies with some design changes. Could be a winner and "silver > bullet" products. Relatively short implementation cycle, easy to > manufacture, easy dimensioning, easy install and familiar technology. Well > worth to investigate in more detail. The key was to lowering the demand on > operating temperature and it seems that they found one good solution to > this. > > Hakan > > At 03:39 PM 2/25/2003 -0800, you wrote: > >ammonia cooling is dangerous folks, be careful. > > > >On Tue, 25 Feb 2003, Kris Book wrote: > > > > > It seems like most houses are well enough insulated that > > > they only need cooling when the sun is shining brightly > > > but, refrigeration of food and even greenhouses could > > > benefit greatly from using waste heat to power this system > > > during periods of low direct sunlight. > > > > > > kris > > > > > > > > > --- David Wood <[EMAIL PROTECTED]> wrote: > > > > on the same though.. why not use the waist heat from a > > > > veggie diesel > > > > co-generator for the heat source of this type of system. > > > > > > > > david > > > > > > > > [EMAIL PROTECTED] wrote: > > > > > > > > > > > > > > http://members.aon.at/solarfrost/main.html > > > > > > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://archive.nnytech.net/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.458 / Virus Database: 257 - Release Date: 2/24/2003 Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
