Kannor (kanna) to US Oil Barrels (bbl) conversion

What is the kanna?

Kannor is an archaic unit of volume, primarily used in regions of South Asia, particularly in areas of historical Kannada-speaking influence. It's important to note that the exact volume represented by a "Kannor" could vary significantly depending on the specific locality and time period. Think of it like "acre" in the west which varies in size from country to country and even from region to region. Below is more information about Kannor to answer the question.

Origin and Formation

The precise etymology of the word "Kannor" and its initial standardization are challenging to trace due to the lack of consistent historical record-keeping for local units of measurement. However, it's reasonable to assume its development was tied to agricultural practices and trade within the region. Kannor, like many traditional volume units, likely originated as a practical measure related to the capacity of common containers used for storing and transporting goods, especially grains. Its formation was influenced by the needs of local farmers and merchants.

Volume and Equivalencies

There's no universally accepted standard for the Kannor. Historically, it represented varying quantities depending on region. Here are two examples of how it was used:

• Mysore Region: In some parts of the former Mysore Kingdom, a Kannor was approximately equivalent to 128 seers (another local unit of weight), or about 128 lbs of rice.
• Other Regions: In other regions, one Kannor may have been equal to 1/4 of a koldi.

It is essential to understand that due to absence of a uniform definition, that Kannor is not used in modern practice. When you see it, it's very specific to local practice and you would have to find a local reference to understand what they mean by it.

Historical Significance and Usage

Kannor would have been used to measure grains in old times for consumption or agriculture.

Laws and Associated Figures

There are no specific laws or famous figures directly associated with the "Kannor" as a unit of measurement. Its use was largely confined to local trade and agricultural practices.

Example:

Imagine a local farmer in the 18th century, selling rice at the local market. Instead of using modern units like kilograms, they might have sold their rice in Kannors.

What is the US Oil Barrel?

The US oil barrel (bbl) is a unit of volume equal to 42 US gallons, used almost exclusively for crude oil and petroleum products. It is the standard trading unit of the global oil industry.

Definition

The US oil barrel is defined as exactly 42 US liquid gallons:

$$1\ \text{bbl} = 158.987\ \text{L} = 0.158987\ \text{m}^3$$

Precisely, 1 bbl = 158.987294928 liters. This differs from other "barrel" definitions: the US fluid barrel is 31.5 gallons, the US federal beer barrel is 31 gallons, and the UK barrel is about 163.66 liters.

Origin and History

The 42-gallon standard traces to the early Pennsylvania oil boom of the 1860s. Producers adopted the 42-gallon "tierce" wooden barrel, which was slightly larger than the common 40-gallon whiskey barrel, allowing for spillage and evaporation losses during transport. In 1872 the Petroleum Producers Association formalized 42 gallons as the standard, and it endures today even though oil is now moved by pipeline and tanker rather than in physical barrels.

Law and Notable Facts

The oil barrel is not an SI unit but is deeply embedded in commodity markets, where crude prices are quoted per barrel and production in barrels per day (bbl/d). The abbreviation "bbl" is thought to stand for "blue barrels" once used by Standard Oil. Physical 42-gallon barrels are rarely used in the modern industry.

Real-World Examples and Conversions

• 1 bbl = 42 US gallons ≈ 34.97 imperial gallons ≈ 158.99 liters.
• Global crude oil consumption is roughly 100 million barrels per day.
• A single barrel of crude yields about 19 to 20 US gallons of gasoline after refining.
• 1 metric ton of crude oil is roughly 7.33 barrels, depending on density.