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Solving:
Introducing notations:
 G
y 
X 1 = P, X 2 = T G
where P - pressure, MPa;
°
T - temperature, C;
 G - mass of dissolved rock, g;
G - initial weight of rock, G.
Determining minimum, maximum and average value of
each factor:
о
Х 1min = 1 MPa; Х 2min = 20 С;
о
X 1max = 40 MPa; X 2max = 120 С;
о
X 1aver = 20,5 MPa; X 2aver = 70 С.
Intervals of change of values of factors are:
h 1 =20,5-1 = 19.5 MPa;
°
h 2 =70-20 = 50 C.
Values of maximum and minimum levels of factors in
conventional scale are determined by formulas:
х 1 min = (Х 1min – X 1aver) / h 1= -1;
х 2 min = (Х 2min – X 2aver) / h 2= -1
х 1 max = (X 1max – X 1aver) / h 1= +1;
х 2 max = (X 2max – X 2aver) / h 2= +1.
Composing a working planning matrix of experiment
Values of factors
Number of Relative unit Actual unit
°
experiment X 0 X 1 X 2 P, MPa T, C
1 +1 +1 +1 40 120
2 +1 -1 +1 1 120
3 +1 +1 -1 40 20
4 +1 -1 -1 1 20
After receiving the results of experiments, we define
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