This plant is V Chao Praya Sapphire x Ascda Bangkhuntian Gold. I have posted it on OB numerous times because it's almost always in bloom:
http://www.orchidboard.com/community...tian-gold.html
This winter, the weather here was record-breaking and although the chids were all tucked away safely in their room, the vandas were hung directly under the skylights for the best lighting but that also left them about 6 ft away from the warmest (50-52 degrees) part of the room. The only thing that was done differently is the cooler temps and this is what she looks like today: