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Pressure. Temperature. o C. kN/m 3. 0. 1. 2. 3. 20. 805. 0. (y 1 –y 0 ). (y 2 –y 1 ) – (y 1 –y 0 ). 25. 985. 3. 1. (y 0 ). 1. (y 1 ). 4. (y 3 –y 2 ) – (y 2 –y 1 ). (y 0 ). 30. 1,170. 2. 3. 5. (y 3 –y 2 ). (y 1 ). (y 0 ). 4. 2. (y 2 ). (y 1 ). 35. 1,350. 3.
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Pressure Temperature oC kN/m3 0 1 2 3 20 805 0 (y1 –y0) (y2 –y1) – (y1 –y0) 25 985 3 1 (y0) 1 (y1) 4 (y3 –y2) – (y2 –y1) (y0) 30 1,170 2 3 5 (y3 –y2) (y1) (y0) 4 2 (y2) (y1) 35 1,350 3 3 1 (y2) (y3) (etc) 4 2 (y3) 40 1,570 (y2) 4 1 3 (y4) (y3) 4 45 1,790 2 (y3) 5 (y4) 1 (y5) 3 (y4) 50 2,030 4 6 2 (y5) (y4) 1 3 (y6) (y5) 55 2,300 7 2 (y6) (y8 – y7) 60 2,610 8 0 (y0) = 805 Note: (1) ( for this application) (y ) k m m+n – k ( ) m [ (-1 ) ] m (2) (y ) = ( for any application) k n k = 0 o K-kJ / kg (3) H = 1,265 ( for this application)