TY - RPRT TI - Development and verification of a linear fit mixed system rating method for unitary two-speed and variable-speed air conditioners AU - Payne, W Vance PY - 2010 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS TN 1667 DO - 10.6028/NIST.TN.1667 ER -