I am having trouble with the below question, specifically calculating heat transfer by convection and also determining how long it would take to raise the room temperature by 10C for all three methods?

"For a 275x450 cm room, determine rate of heat transfer by conduction, convection and radiation. The room has a window with area 2.98m2. The indoor temperature is 18.1C and the outdoor temperature is 12.1C."

How much time would it take to change the temperature by 10C in your room by each of the methods presented above?

below is my work thus far:

I think my calculation for convection may be wrong? This room is 275x450cm. I am also having trouble determining time to raise room temperature by 10 degrees. Please list step by step for each calculation with explanation. Thank you!

Revision: the indoor temperature is 6.1C, outdoor temperature is 18.1C Conduction 41t = 10. 12 5 / m. s. . c ) ( 12 . 375 m 2) ( 12 . C) 71. 28 J/S 0. 25 m convection 450 cm . 275 cm. 245 cm = 30318750 em = 30- 3m 3 M = ( 1 . 2 3 9 k g / m 3 ) ( 30 . 3 m 3 ) = 39.18 Kq Q = 1 3 9 1 8 k g ) ( 1 0 0 0 5 / kg . c ) ( 12c ) = 470140 J radiation Q / t = 15 . 67 x 10 - 8 5 / s . m z . K 4 ) ( 0 . 91 ) ( 2 . 98 m 2 ) ( 279. 14- 291.17, 1 171. 1 J /S Window = 122 cm x 244cm