For this case the first thing you should know is the following unit conversion.
1 BTU = 0.25 Kilocalories
We then have the following numerical value:
[tex]8.0 * 10 ^ 4 \frac{BTU}{h} [/tex]
Applying the conversion of units we have:
[tex]8.0 * 10 ^ 4 \frac{BTU}{h} * 0.25 \frac{Kcal}{BTU} [/tex]
Canceling units we have:
[tex]20000 \frac{Kcal}{h} [/tex]
Answer:
This is 20000 kilocalories per hour
[tex]20000 \frac{Kcal}{h} [/tex]
