engines used by the BMW and MINI brands, and itâs an improved version of the N54 and N55 units which both own awards in the past. The BMW N55 engine was something of legend. It was easily one of the best engines on the market throughout its entire tenure, regardless of what else was on the market.
Definition - What does Windows Presentation Foundation (WPF) mean? Windows Presentation Foundation (WPF) is a part of the Windows operating system that provides graphical user interfaces and environments for applications and services tha are developed and executed on Windows OS. WPF is a subsystem in the Windows OS that appeared in the Windows Vista version.
HSPF â. HSPF stands for Heating Seasonal Performance Factor and is primarily used to measure the heating efficiency of heat pumps and ductless heat pumps, although it is also used (somewhat confusingly) to describe the overall heating and cooling capabilities of a system.SPF, SEER, and AFUE â Demystifying Efficiency Ratings. The world of heating and cooling certainly has its fair share of tricky technical language, which can make it difficult for consumers to make an informed decision when buying new equipment.