What is APA? APA stands for American Psychological Association and is a common formatting style for essays and papers in the social sciences. APA style has unique formats for in-text citations and reference pages. Its style and guidelines increase the ease of reading comprehension for viewers as well as ensure consistent presentation of content and written material.
In this calculation weâll use an ethane heat content of 66,500 BTU per gallon. The top boxes in Figure #1 show the conversion of the ethane price per gallon to dollars per MMbtu. So if the price of ethane is 22 cents, divide by 66,500 and multiply by 1,000,000 to yield an equivalent gas price of $3.31/MMbtu.
For example: 1 BTU is the heat required to raise 1 lb of water 1F. Gasoline has a BTU rating of 18,400 BTUs/lb, whereas ethanol is actually 47% less @ 9,750 BTUs/lb. Because of this, ethanol fuel suppliers display their fuel BTU ratings as BTUs per gallon (giving the consumer a perceived higher heat value). For comparison; heating oil has a BTU rating of 20,400 BTUs/lb and diesel (#2) has a rating of 24,840 BTUs/lb.