(Hive Bee)
11-09-02 12:12
No 378139
(Rated as: excellent)
"Old refrigerators are salvaged to build a laboratory cooler and a gas liquefier"
-details using OTC components to build a gas liquefaction appartus. this is dated and uses freon as the coolant but will adapt to
modern refrigerants. details piping/soldering to achieve regeneration. etc. Neat stuff.
Amateur Scientist from Scientific American page 151 november 1969
"The chemistry student -'Cooling and refrigeration' " - talks about various methods available on a student level to achieve
cooling - among them are Peltier, chemical action, Joule-Thompson effect, absorption of latent heat, etc. as well as refrigerating
fluids like ammonia, sulfur dioxide, carbon dioxide, methyl chloride, ethyl chloride. And my favorite the ammonia-water
absorption cycle. featuring the Crosley Icy Balls. lots of diagrams
Journal of Chemical Education v6, no10, page1768 Oct 1929
"high school chemistry - Refrigeration"- info on basic refrigeration in the setting of high school chemistry.
Journal of Chemical Education Nov 1942 page 539
"Refrigeration - a demonstration for the classroom"- ammonium hydroxide to liquid ammonia and back again - in the process of
vaporization and condensing heat is absorped. simple demo for ammonia adsorption.
Journal of Chemical Education page 169 lost issue/date
"Simple apparatus for refrigeration experiements"- mechanical apparatus for cooling. some math related theory.
Journal of Chemical Education oage 364 July 1955
"small ammonia refrigeration" - online source---anhydrous ammonia characteristics- www.nh3tech.org/absorption.html
"ammonia refrigeration in supermarkers" - cooling it in Brazil - physics speaks Portuguese -
online ===> Google in ASHRAE Journal
"refrigeration and alternatives for alternate energy people"- drawings, procedure and words -
online at http://acs.comcen.com.au/refrigeration.h
"absorption refrigeration technology" - www.eng.fsu.edu/ME_senior_design/ 2000/team07/absorpti.htm
US 1740737 and US 1811523 patents on refrigeration, IcyBalls, etc.
"Crosley IcyBalls" - another ammonia absorption from past - homemade version of patent
www.ggw.org/~cac/IcyBall/crosley_i
lots of hits on Google.com
ammonia - liquid from the Musprat Chemisltry Vol 1 page 178 - online Google
"Homemade refrigeration system with propane refrigerant" - online at home.earthlink.net/~lenyr/refrig.htm
==================================
anywho hope this helps some with the cooling questions
