|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
|
Refrigerators
... Read more |
|
chlorofluorocarbons
chlorofluorocarbons (CFCs), organic compounds that contain carbon, chlorine, and fluorine atoms. CFCs are highly effective refrigerants that were developed in response to the pressing need to eliminate toxic and flammable substances, such as sulfur dioxide and ammonia, in refrigeration units and... Read more |
|
sulfur dioxide
sulfur dioxide chemical compound, SO 2 , a colorless gas with a pungent, suffocating odor. It is readily soluble in cold water, sparingly soluble in hot water, and soluble in alcohol, acetic acid, and sulfuric acid. It is corrosive to organic materials and dissolves in water to form sulfurous acid,... Read more |
|
silica gel
silica gel chemical compound. It is a colloidal form of silica , and usually resembles coarse white sand. It may be prepared by partial dehydration of meta silicic acid, H 2 SiO 3 . Because it has many tiny pores, it has great adsorptive power. It is used as a drying agent, as a catalyst or... Read more |
|
|
aerogel
aerogel any of a group of extremely light and porous solid materials; the lightest is less than four times as dense as dry air. Aerogels are produced from certain gels (see colloid ) by heating the gel under pressure, which causes the liquid in the gel to become supercritical (in a state between a... Read more |
|
|
Refrigerants
Refrigerator Background Prior to the development of artificial refrigeration techniques during the 1800s, people utilized a variety of means to chill and preserve foodstuffs. For centuries, ice served as the principal refrigerant. Ironically, the ancient Indians and... Read more |
|
|
Freons
Freons The trademark Freon refers to any of several gaseous chlorofluorocarbons, CFCs, with the general formula CF xCl 4-xor C 2F xCl 6-x. Due to their physical and chemical properties, these CFCs became the compounds of choice as propellants... Read more |
|
|
Hydrochlorofluorocarbons
Hydrochlorofluorocarbons Why HCFCs? Benefits and costs of HCFCs The future of HCFCs Resources Hydrochlorofluorocarbons (HCFCs) are compounds consisting of hydrogen, chlorine, fluorine, and carbon atoms. HCFCs and hydrofluorocarbons (HFCs) were created in the 1980s as substitutes for... Read more |
|
air conditioning
air conditioning mechanical process for controlling the humidity, temperature, cleanliness, and circulation of air in buildings and rooms. Indoor air is conditioned and regulated to maintain the temperature-humidity ratio that is most comfortable and healthful. In the process, dust, soot, and... Read more |
|
hygrometer
hygrometer , instrument used to measure the moisture content of a gas, as in determining the relative humidity of air. The temperature at which dew or frost forms is a measure of the absolute humidity—the weight of water vapor per unit volume of air or other gas at the temperature before... Read more |
|
Carbon Dioxide May Be Tomorrow's Refrigerant.
...making progress with carbon dioxide in automotive and...Although carbon dioxide is considered a global...researchers. Using carbon dioxide as a refrigerant would not contribute...that conventional ... |
|
Carbon dioxide may be tomorrow's refrigerant.(Milwaukee Journal Sentinel)
...making progress with carbon dioxide in automotive and...Although carbon dioxide is considered a global...researchers. Using carbon dioxide as a refrigerant would not contribute...that conventional ... |
|
Expert on public policy and climate change to speak at lecture series.
...University campus May 2 and 3. As featured...Series Wednesday, May 2, at 7 p.m...the release of carbon dioxide and refrigerants into the atmosphere...Series, Thursday, May 3, at 4:30 p...on "Engineering ... |
|
COMMERCIAL BUILDINGS IN THE 21ST CENTURY Prototypes and personnel.(Brief...
...Engineered Systems. Tomorrow's innovations...That perspective may be at the heart...working fluids (refrigerants, lubricants...testing methods may make as big a...explains. "Carbon dioxide and water technologies...Exchangers ... |
 "The Economist (US)")
|
The warming globe. (The Economist: A Survey of the Environment; Costing the...
...revolution--carbon dioxide, nitrous oxide...planet's surface may warm up far more...happens, the world may eventually be...greenhouse gases tomorrow, some waring...consultant, "may prove to be the...of CFCs--as ... |
|
BUSINESS IN ASIA TODAY - JULY 10, 2008.
...row, the agency may force management...ton vessels by May, 2011, the company...20,000 variable refrigerant volume units and...for Transforming Tomorrow' for the year 2007...in cutting down on carbon dioxide emissions. The ... |
|
Destroying cars called detrimental to recycling.(News)
...happy it's concluding tomorrow. The Automotive Recyclers...take out the fluids, refrigerant, batteries, harvest...that the engine oil may be unusable, he said...850,000 fewer tons of carbon dioxide emissions per year... |
Search over 100 encyclopedias and dictionaries:
HighBeam™ Research, Inc. © Copyright 2012. All rights reserved.
The Encyclopedia.com advertising network includes:
