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Fragrance Lampe
Also known as a "perfume lamp", "effusion lamp," or "catalytic lamp", a fragrance lamp is a lamp that disperses scented alcohol using a catalytic combustion wick consisting of a cotton wick threaded through a natural, porous stone. The catalytic combustion wick was developed and patented by Maurice Berger, a French pharmaceutical dispenser, in 1898 as a means of purifying the air in hospitals and mortuaries. It is claimed that this catalytic oxidation process destroys bacteria in the air and increases oxygen levels. The fragrance lamp's process is initiated by igniting the stone burner seated at the mouth of the lamp. After two minutes the flame is extinguished by blowing it out. The heated burner remains active as the flame-less catalytic combustion process and diffuses the combusted alcohol and any added aromatics throughout the room. The lamp does not operate with an open flame, making it much safer to operate than scented candles. Its lower operating temperature also means tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragrance Lampe
Also known as a "perfume lamp", "effusion lamp," or "catalytic lamp", a fragrance lamp is a lamp that disperses scented alcohol using a catalytic combustion wick consisting of a cotton wick threaded through a natural, porous stone. The catalytic combustion wick was developed and patented by Maurice Berger, a French pharmaceutical dispenser, in 1898 as a means of purifying the air in hospitals and mortuaries. It is claimed that this catalytic oxidation process destroys bacteria in the air and increases oxygen levels. The fragrance lamp's process is initiated by igniting the stone burner seated at the mouth of the lamp. After two minutes the flame is extinguished by blowing it out. The heated burner remains active as the flame-less catalytic combustion process and diffuses the combusted alcohol and any added aromatics throughout the room. The lamp does not operate with an open flame, making it much safer to operate than scented candles. Its lower operating temperature also means tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Lamp
An oil lamp is a lamp used to produce light continuously for a period of time using an oil-based fuel source. The use of oil lamps began thousands of years ago and continues to this day, although their use is less common in modern times. They work in the same way as a candle but with fuel that is liquid at room temperature, so that a container for the oil is required. A textile wick drops down into the oil, and is lit at the end, burning the oil as it is drawn up the wick. Oil lamps are a form of lighting, and were used as an alternative to candles before the use of electric lights. Starting in 1780, the Argand lamp quickly replaced other oil lamps still in their basic ancient form. These in turn were replaced by the kerosene lamp in about 1850. In small towns and rural areas the latter continued in use well into the 20th century, until such areas were finally electrified and light bulbs could be used. Sources of fuel for oil lamps include a wide variety of plants such as n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isopropyl Alcohol
Isopropyl alcohol (IUPAC name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable organic compound with a pungent alcoholic odor. As an isopropyl group linked to a hydroxyl group (chemical formula ) it is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms. It is a structural isomer of propan-1-ol and ethyl methyl ether. It is used in the manufacture of a wide variety of industrial and household chemicals and is a common ingredient in products such as antiseptics, disinfectants, hand sanitizer and detergents. Well over one million tonnes is produced worldwide annually. Properties Isopropyl alcohol is miscible in water, ethanol, and chloroform as, like these compounds, isopropyl is a polar molecule. It dissolves ethyl cellulose, polyvinyl butyral, many oils, alkaloids, and natural resins. Unlike ethanol or methanol, isopropyl alcohol is not miscible with salt solutions and can be separ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalytic Heater
A catalytic heater is a flameless heater which relies on catalyzed chemical reactions to break down molecules and produce califaction (heat). When the catalyst, natural gas, and oxygen combine together they ignite at a low enough temperatures that a flame is not needed. This process keeps repeating itself until either oxygen or the fuel source is taken out of the equation. Types There are three main types of larger catalytic heaters: # Heated Enclosure Packages # Instrument Gas and Pilot Preheating Regulators # Space Heating Heated enclosure packages are used to protect pipes from rain and ice build-up by keeping the pipes heated. The catalytic heater is contained within the package which is usually made out of stainless-steel. Instrument gas and pilot preheating regulators are only used for freeze protection, and to heat up the gas before it reaches the pilot. It can also be used to heat a stream of gas that's used for measurement or instrumentation. Space heating is a good su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalytic Combustion
Catalytic combustion is a chemical process which uses a catalyst to speed desired oxidation reactions of fuel and so reduce the formation of undesired products, especially pollutant nitrogen oxide gases (NOx) far below what can be achieved without catalysts. The process was discovered in the 1950s by Catalytic Combustion LLC. Chemical process Catalysts may be used to control combustion reactions in the following ways: # fuel preparation, such as splitting long molecules into shorter ones; # fuel oxidation to release heat energy; # the destruction of pollutant gases in the exhaust. Technology Catalytic combustion was developed by Norb Ruff in the 1950s.Worthy, Sharon. Bio-Medicine: Connecticut chemist receives award for cleaner air technology'. 23 June 2003. Retrieved 31 October 2012. He founded Catalytic Combustion LLC in the 1950s where he created and patented the first metal catalyst. Other early work was carried out by researchers at Acurex, Westinghouse, NASA and the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aromatics
Aromatic compounds, also known as "mono- and polycyclic aromatic hydrocarbons", are organic compounds containing one or more aromatic rings. The parent member of aromatic compounds is benzene. The word "aromatic" originates from the past grouping of molecules based on smell, before their general chemical properties are understood. The current definition of aromatic compounds does not have any relation with their smell. Heteroarenes are closely related, since at least one carbon atom of CH group is replaced by one of the heteroatoms oxygen, nitrogen, or sulfur. Examples of non-benzene compounds with aromatic properties are furan, a heterocyclic compound with a five-membered ring that includes a single oxygen atom, and pyridine, a heterocyclic compound with a six-membered ring containing one nitrogen atom. Hydrocarbons without an aromatic ring are called aliphatic. Benzene ring model Benzene, C6H6, is the least complex aromatic hydrocarbon, and it was the first one named as such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating Temperature
An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating temperature). Outside this range of safe operating temperatures the device may fail. It is one component of reliability engineering. Similarly, biological systems have a viable temperature range, which might be referred to as an "operating temperature". Ranges Most devices are manufactured in several temperature grades. Broadly accepted grades are: *Commercial: 0 ° to 70 °C *Industrial: −40 ° to 85 °C *Military: −55 ° to 125 °C Nevertheless, each manufacturer defines its own temperature grades so designers must pay close attention to actual datasheet spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isopropyl Alcohol
Isopropyl alcohol (IUPAC name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable organic compound with a pungent alcoholic odor. As an isopropyl group linked to a hydroxyl group (chemical formula ) it is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms. It is a structural isomer of propan-1-ol and ethyl methyl ether. It is used in the manufacture of a wide variety of industrial and household chemicals and is a common ingredient in products such as antiseptics, disinfectants, hand sanitizer and detergents. Well over one million tonnes is produced worldwide annually. Properties Isopropyl alcohol is miscible in water, ethanol, and chloroform as, like these compounds, isopropyl is a polar molecule. It dissolves ethyl cellulose, polyvinyl butyral, many oils, alkaloids, and natural resins. Unlike ethanol or methanol, isopropyl alcohol is not miscible with salt solutions and can be separ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
