What is the energy content of e85 ethanol

FuelEnergy Content*Quantity of Fuel in 1 GGEEthanol (E85)**88,258 Btu/gallon1.32 gallonElectricity***3,414 Btu/kilowatt hour (kWh)34.00 kWhPropane84,250 Btu/gallon1.38 gallonHydrogen288.88 Btu/ft3 or 51,585 Btu/lb401.86 ft3 or 2.25 lb

What is the energy content of ethanol?

The energy content of ethanol is lower than that of gasoline. The heating value of ethanol is around 27 MJ/kg, in volumetric terms around 21 MJ/l, which is only 65% of the volumetric energy content of gasoline. This leads to higher volumetric fuel consumption with ethanol compared to gasoline.

Is E85 really 85 percent ethanol?

Fuel sold as E100 is always 100 percent ethanol, while fuel sold as E85 always contains 85 percent ethanol. Using a guaranteed fraction of ethanol makes it easier for a vehicle to reach peak performance and fuel economy.

What is the ethanol content of E85?

E85 (or flex fuel) is a term that refers to high-level ethanol-gasoline blends containing 51% to 83% ethanol, depending on geography and season (see Fuel Properties and E85 Flex Fuel Specification).

How do you find the energy content?

Energy can be calculated using the formula: Q = mc ∆T. In the formula, Q = the energy in joules or calories, m = the mass in grams, c = specific heat and ∆T = the change in temperature which is the final temperature minus the initial temperature. The specific heat for water = 1 calorie/gram °C.

Does E85 make more power?

E85 fuel can give you a significant boost in power and torque without breaking the bank for racing fuels. It has a base octane rating of 105 and has the bonus of added cooling properties that add even more knock resistance than racing fuels with the same rating.

How is ethanol energy density?

FuelEnergy densityEthanol27 MJ/kgBiodiesel38 MJ/kgCrude oil44 MJ/kgDiesel45 MJ/kg

What is the octane rating of E50?

If we use 118 as the ‘octane’ for E85, E50, when blended with E10/93 octane would give you an effective octane of 106 octane.

Is E85 better than 93?

E85 has an octane rating higher than that of regular gasoline’s typical rating of 87, or premium gasoline’s 91-93. This allows it to be used in higher-compression engines, which tend to produce more power per unit of displacement than their gasoline counterparts.

Whats a good E85 percentage?

In theory, an E85 blend consists of 85 percent ethanol, and 15 percent gasoline. In practice, however, ASTM International standards allow fuels with as little as 51 percent ethanol content to carry the E85 label.

Article first time published on

What is the octane of E85?

E85 has an octane rating ranging from 100-105, making it a high performance fuel. In comparison, regular unleaded gasoline has an octane rating of 87.

Is diesel an E85?

PropertiesDieselE85Carbon content (wt%)87Ethanol 52.2, gasoline 85.5

How do you calculate energy consumption?

Hence, the energy consumption formula or the power consumption formula is given as below: E = P*(t/1000); where E = energy measured in Joules or kilowatt-hours (kWh), P = power units in watts, and t = time over which the power or energy was consumed.

What is energy formula?

The energy stored in an object due to its position and height is known as potential energy and is given by the formula: P.E. = mgh. Unit. The SI unit of energy is Joules (J).

What is energy per gram?

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

Which of the following fuels has the highest energy density?

The highest energy density fuel is hydrogen, which is also the simplest chemical component in existence. Gasoline, which is derived from refining crude oil, contains much more energy than coal (twice the lower grade bituminous) or wood (three times).

What is energy density in physics?

In physics, energy density is the amount of energy stored in a given system or region of space per unit volume.

How do you find energy density in physics?

Energy density can be written as uB=B22μ u B = B 2 2 μ .

Which is better E85 or 87?

87 gasoline refers to the octane of the fuel. E85 is up to 85% ethanol and may have a variety of octane. You may use non-ethanol gas (87 octane regular fuel) in your E85 vehicle. You will experience better gas mileage than using E85 in your E85 vehicle.

Is E85 worth it on Na?

The naturally-aspirated LT1 can benefit from E85. … “There is more to gain with a stock, naturally-aspirated car by adding and tuning for E85 fuel than just tuning a stock, naturally-aspirated car on pump gas,” he said. “On a naturally-aspirated setup, we have seen a 20-25 horsepower gain with E85.

Is E85 more efficient than gas?

MPG. Due to ethanol’s lower energy content, FFVs operating on E85 get roughly 15% to 27% fewer miles per gallon than when operating on regular gasoline, depending on the ethanol content. Regular gasoline typically contains about 10% ethanol.

Why is ethanol bad for engines?

Boatyards and marine engine dealers warn that gas blended with ethanol can cause motors to stop working, ruin rubber components in the engine’s fuel system and damage engine parts. … The gas softens rubber components in the engine, some of which may dissolve and gum up the system.

How much HP does E85 tune add?

In boosted applications, E85 can add about 10% HP over racing fuels. Modifications are necessary to achieve this. The gains in non-boosted vehicles is minimal.

Can I mix E85 and regular gas?

Originally Answered: Can you mix E85 and regular-unleaded gasoline half-and-half? Yes, you can. Provided your engine is designed to run on E85, you can feed it any ratio of E85/gasoline. You should not attempt this in an engine not designed to run on E85.

Can you mix 93 and E85?

Forum Addict 5″ mix might not be as immediately corrosive as E85, but over time you’ll have the same problems. Replacing those problem pieces is the only way to be sure that mixing the two is not a problem, and even then your mileage will suffer thanks to the lower energy density of ethanol.

How much E85 does it take to make 93?

3 gallons of E85 and 9 gallons 91 will yield 93 octane. (Assuming the 91 is 10% ethanol).

What is the octane of E70?

I have tried to find more info on E70 and some say it has an octane rating between 100 – 105 where E85 is between 105 – 109.

Is E85 considered racing fuel?

Sunoco E85-R is an unleaded racing fuel containing 85 volume % ethanol. It can only be used in fuel systems designed specifically for E85 blends. … Conventional E85 can vary from about 51% to 83% ethanol or so but rarely contains 85% ethanol.

Is E85 better for the environment?

Overall, ethanol is considered to be better for the environment than traditional gasoline. … E85, ethanol-gasoline blends that contain 51% to 83% ethanol,1 also has fewer volatile components than gasoline, which means fewer gas emissions from evaporation.

Does E85 make more power than 93 octane?

Same vehicle, same boost pressure, but a significant bump in power with the ethanol over gasoline. With use of E85 ethanol and appropriate tuning, we saw a net gain of 64 WHP & 38 WTQ over 93 octane gasoline!

Why do cars make more power on E85?

The E85 boosts the engine’s horsepower because of two factors: its amazing octane rating and cooling capacity. … Also, the fuel absorbs plenty of heat from the intake charge when transformed from gas to liquid inside the engine. A cooler intake charge lowers the rate of engine’s detonation and improves power output.