For T< 553 K: v x 10s = U8 - 2.0 x 10"3T + 3.42 xl^T2 h = 130 + 4.99(T - 293) - 2.95 x lO-^T1 - 2931)

+ 3.1 x ](W3- 2933) s = 0.28 + 4.9907293) - 5.9 x HH(T - 293) + 4.7 x lO^fF - 293J)

Note: The last row in each table gives saturation values.

Example: The coefficient of compressibility at 240°C (513 K) between 5 and 10 MPa is determined from the numerical entries in the 5 MPa and 10 MPa subtables:

Because v x 103 is given to only three significant figures, the above value of 0 is not very accurate. Using values from the tabulation in Reference 5, P = 1.3 x 10~3.

Example: The heal capacity at constant pressure of liquid water at 5 MPa between 220°C (493 K) and 100°C (513 K) is obtained by the approximating the derivative dh/dT by:

This value of CF is equivalent to 1 cal/g-°C. The calorie unit is the quantity of heat needed to raise the temperature of 1 gram of water by 1 degree Celsius.

The single-phase tables often require double interpolation, an example of which is given below.

Example: The enthalpy of steam at 230°C (503 K) and 240 kPa is determined in two steps:

Step 1: Interpolate on 503 K at bounding pressures:

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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