dJ(decijoule)

A decijoule (dJ) is a unit of energy in the International System of Units (SI) with the symbol "dJ". It is a submultiple of the standard SI unit for energy, the joule (J). In the field of energy, one decijoule is equal to one-tenth (1/10) of a joule, or 0.1 joules.

This unit is used to quantify or measure small amounts of energy in various applications like electrical, mechanical, thermal or chemical processes. It is not as commonly used as other multiple or submultiple units like kilojoules, megajoules or millijoules, but it can still be helpful for expressing specific energy values in smaller scales.

MMBTU [IT](million British thermal units)

MMBTU, or Million British Thermal Units (MM is the Roman numeral for one thousand times one thousand), is a unit of measurement in the field of energy. The British thermal unit (BTU) is a unit of heat used in the Imperial and United States customary systems, where one BTU is roughly equivalent to the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

In the context of energy, the MMBTU is often used to measure the energy content of fuels, such as natural gas, oil, or coal. It represents a quantity of one million BTUs and can be used to compare the energy content of different fuels, or to quantify the amount of heat energy produced by a power plant or industrial process.

The MMBTU is an "IT" or "International Table" BTU unit, which means it's based on the IT calorie and is widely used in the global energy sector. It is important to note that the MMBTU can be converted to other energy units, such as kilowatt-hours, joules, or calories, depending on the intended application or standard used in a specific industry or region.