Have an 8 hr stopover in Bejing Capital Airport T3, would like to sit in a lounge but not hire room.

Yes, there are hourly lounges at T3 of PEK. The exact locations are International Departure Hall (near to Boarding Gate No.E10); West side of public area, Arrival Hall, 2nd Floor, T3-C. For charge standards, you can dial 010-64558577(T3C) or 010-64532621 (T3E) for more details. :)