About: http://webisa.webdatacommons.org/76503695

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	And of course there are factors such as wind and insulation.I do not have them at my fingers but I am sure a quick search will find you charts on how many BTUS it takes to heat a pool in a given timeframe.
http://www.w3.org/ns/prov#wasQuotedFrom	havuz.org