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Methane is CH4 and LPG(Butane) is C4H10.
The energy in the Carbon Carbon bond (C-C)is more than that in the Carbon Hydrogen bond (C- H).
Since there are more number of C-C bonds in butane (LPG) than in methane,calorific value of LPG or butane is higher than that of methane.
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Where do you get the re factor for explosives?
The RE factor (relative effectiveness) compares a given explosive's energy to TNT, with TNT being assigned a value of 1.0. Composition C4 is about 1.4- pound for pound, it has 40% more energy than TNT. The RE rating of a product would be listed in the manufacturer's information sheet, or taken from a data table for military explosives.
Is diesel fuel the same as distillate?
No, 'distillate' is not the same as diesel fuel. It is more like kerosene and is used in engines that have spark plugs for ignition rather than high compression to ignite the (injected) fuel. Distillate engines often have a small gasoline tank so they will start col on gasoline and you switch it to distillate after it warms up.
What are the advantages and disadvantages of CNG and LPG gases?
The Advantages of Compressed Natural GasThe Environmentally Clean Advantage Compressed natural gas is the cleanest burning fuel operating today. This means less vehicle maintenance and longer engine life. CNG vehicles produce the fewest emissions of any motor fuel. Dedicated Natural Gas Vehicles (NGV) have little or no emissions during fueling. In gasoline vehicles, fueling emissions account for at least 50% of a vehicle's total hydrocarbon emissions. CNG produces significantly less pollutants than gasoline. Tailpipe emissions from gasoline operated cars release carbon dioxide, which contributes to global warming. This is greatly reduced with natural gas. The Maintenance Advantage Some fleet operators have reduced maintenance costs by as much as 40% by converting their vehicles to CNG. Intervals between tune-ups for natural gas vehicles are extended 30,000 to 50,000 miles. Intervals between oil changes for natural gas vehicles are dramatically extended--anywhere from 10,000 to 25,000 additional miles depending on how the vehicle is used. Natural gas does not react to metals the way gasoline does, so pipes and mufflers last much longer. The Performance Advantage Natural gas gives the same mileage as gasoline in a converted vehicle. Dedicated CNG engines are superior in performance to gasoline engines. CNG has an octane rating of 130 and has a slight efficiency advantage over gasoline. Because CNG is already in a gaseous state, NGVs have superior starting and driveability, even under severe hot and cold weather conditions. NGVs experience less knocking and no vapor locking. The CNG Cost Advantage Natural gas is cheaper per equivalent gallon than gasoline (an average of 15% to 50% less than gasoline)
What is difference between MS rods and TMT bars?
TMT Bars - High strength deformed steel bars used for concrete reinforcement. The surface has many short ribs to allow the concrete to adhere better than if the bars had a smooth surface.MS Rods - Mild Steel rods are used to construct many things (such as scaffold construction), but are not the best choice for concrete. The surface of the rod is smooth, so it does not allow the concrete to adhere as well as if the surface had a texture.
What is the effect of olefin concentration on naphtha hydrotreating process?
Hydrotreating reaction is an exothermic reaction. The total reaction provides excess reaction heat; more is produced by the exothermic hydrogenation reactions than are required to support the endothermic cracking reactions.High Olefin conc. leads to high temp. rise due to hydrogenation reaction.This excess heat increases the reactor temperature and accelerates the reaction rate. Temperature rise can be controlled by injecting cold hydrogen or cold recycled quench into the reactors to absorb excess reaction heat.
Why is net calorific value is less than gross calorific value?
The lower calorific value or Net calorific value (NCV) which supposes that the products of combustion contain the water of combustion to the vapor state. The heat contained in this water is not recovered.The higher calorific value or Gross calorific value (GCV) which supposes that the water of combustion is entirely condensed. The heat contained in this water is recovered.sayed karar waris
Why do chipped potatoes have a higher energy value than mashed or baked potatoes?
Potato chips are deep fried and have high calorific value with more energy than boiled or baked potatoes that have no added hydrocarbons in fried oil.
What has the government done to encourage people to switch from petrol to LPG?
since, petrol releases more smoke than LPG,LPG has high calorific value and burns without smoke
How does the calorific value of pellets compare with oil and gas?
The calorific value of one litre of extra light oil amounts to 10 kWh, as does the calorific value of 1m3 of gas. It is therefore true that: 2kg pellets ~ 1 litre extra light oil ~ 1m3 gas. In terms of price pellets do significantly better than oil and LPG.
What the calorific value of coal?
It varies based on the type and grade of coal. The heat value is less for bituminous than for anthracite, etc.
Is cooked rice more calorific than raw?
No.
Why bituminous shows higher calorific value although anthracite is best quality of coal?
i think because sometimes anthracite has more ash and vm than bituminous
Why should an ideal fuel should have moderate ignition temperature?
Because if the ignition temperature is high then the calorific value declines and if the temperature is very low than the fuel burns very slowly releasing insufficient amount of t=heat and light for any purpose
Which produces more Methane gas A Grass Feed Cow or a Corn fed cow?
Cows that consume grass produce more methane than cows on a high-concentrate or high-grain diet. This is because more acetate is produced than proprionate, which gets converted by the methanogens in the rumen to methane gas, which must be expelled through eructation or belching.
Is methane lighter than air?
Yes methane is lighter than air because it is less dense than air.
Is methane producing bacteria beneficial to humans?
Yes, Methane acts as the only source of carbon and energy for the bacteria Methanotrophs (methanophiles). Methane is a potential greenhouse gas far more potent than carbon dioxide. Methanotrophs play a major role in the reduction of the release of methane into the atmosphere from environments such as rice paddies, landfills, bogs and swamps where methane production is relatively high.
Is liquid methane colder than liquid nitrogen?
No, at their boiling points liquid nitrogen is colder than liquid methane.
