. , , .
, . .
1. , , :
=(QH + Q)/, (1)
- , /., QH - , ., Q - , , ., - , .
, . . : ( ), .
2.
=QH/(QH + Q) < 1. (2)
, , . .
Q, , Q , .
QH =Q +Q. (3)
() .
.
QH = Q (/)a, (4)
Q - , . . , ; - ( ) ; - ; a , . a = 0,5 1,5.
. , .