btu content
41Anthracite — (Greek Ανθρακίτης, literally a type of coal , from Anthrax [Άνθραξ] , coal) is a hard, compact variety of mineral coal that has a high lustre. It has the highest carbon count and contains the fewest impurities of all coals, despite its lower… …
42Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …
43Wobbe index — The Wobbe Index (WI) is an indicator of the interchangeability of fuel gases such as natural gas, liquified petroleum gas (LPG), and Town Gas and is frequently defined in the specifications of gas supply and transport utilities. If V C is the… …
44Eichhornia crassipes — Common Water Hyacinth Scientific classification Kingdom: Plantae (unranked) …
45Firelog — A Firelog is a manufactured log constructed to be used as wood fuel. Firelogs are designed to be inexpensive, while being easier to ignite, and burn longer, and more efficiently than firewood. Firelogs are traditionally manufactured using two… …
46Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …
47Refrigeration — Commercial refrigeration Ice is used to refriger …
48James Prescott Joule — Infobox Scientist name = James Prescott Joule image width = 200px caption = James Joule English physicist birth date = birth date|1818|12|24 birth place = Salford, Lancashire, England death date = death date and age|1889|10|11|1818|12|24 death… …
49List of unusual units of measurement — For units of measure primarily used in countries where English is not the main language, see the article specific to that country, a list of which can be found in the systems of measurement article. An unusual unit of measurement is a unit of… …
50Passive house — The term passive house ( Passivhaus in German) refers to the rigorous, voluntary, Passivhaus standard for energy use in buildings. It results in ultra low energy buildings that require little energy for space heating or cooling. [… …
