Even a new, minimum efficiency air conditioner or furnace can be a significant jump in efficiency. The old furnace in your basement may only be originally rated at 60% to 70% AFUE. In order to comply with national regulations, furnaces manufactured today have to be rated at a minimum of 80% AFUE.
dipole - a pair of equal and opposite electric charges or magnetic poles separated by a small distance. couple - (physics) something joined by two equal and opposite forces that act along parallel lines. electric dipole, electric doublet - a dipole with equal and opposite electric charges.
Hydrogen bonding is a strong dipole-dipole attraction that forms between molecules in which hydrogen is bonded to one of the electronegative elements nitrogen, oxygen and fluo â¦ rine. (dipole-dipole bonds are bonds between dipoles-a molecule that has two oppositely charged poles or ends).luorine, oxygen, nitrogen and carbon only. The first three are very electronegative elements bond with hydrogen to form hydrogen bonding. Carbon can also participate in hyd â¦ rogen bonding, especially when the carbon atom is bound to several electronegative atoms, as is the case in fluoroform, CHF3.