Problem 4.3 Background: Pressurized steam is used in chemical processes as a common source of heating for many reasons: High rate of heat transfer, large latent heat, ubiquitious availability, nontoxic. Steam is most often handled as saturated steam, where the steam exists at the phase boundary between liquid water and vapor steam. The flow is composed of a saturated mixture of liquid and vapor. Properties of steam is tabulated at different points along the phase boundary. Interpolation is commonly used to approximate steam properties at locations between tabulated values. Problem: • Use Excel functions to look up saturated pressure, liquid specific volume, and vapor specific volume at the indicated temperatures. You must use some form of lookup or reference function, not just cell references. Use linear interpolation to estimate the values at temperatures not specified in the reference table. • Whether steam is a saturated mixture at the phase boundary or superheated (away from the phase boundary) can be determined using the steam's specific gravity. If the specific gravity is between that of liquid and saturated vapor, then it is a saturated mixture. If ithe specific gravity is greater than that of a saturated vapor, then it is superheated (see below piecewise function representation). For the specific volumes provided at the indicated temperature, indicate whether the steam is saturated or superheated by showing the words "saturated" or "superheated" in the cell. subcooled, f(v) = saturated, superheated, v Vvapor Look up steam table values T (°C) 70 75 110 115 120 165 T (°C) Interpolate for T values not in the table 111 112 113 P (MPa) 114 116 117 118 119 P (MPa) T (°C) Specific Volume Liquid (m^3/kg) Determine if steam is saturated or superheated Specific Volume (m^3/kg) 117 117 117 117 117 117 117 117 Specific Volume Liquid (m^3/kg) 0.95 0.96 0.97 0.98 0.99 1.00 1.01 1.02 Specific Volume Vapor (m^3/kg) Specific Volume Vapor (m^3/kg) Saturated or Superheated?

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problem 4 3 background pressurized steam is used in chemical processes

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Problem 4.3 Background: Pressurized steam is used in chemical processes as a common source of heating for many reasons: High rate of heat transfer, large latent heat, ubiquitious availability, nontoxic. Steam is most often handled as saturated steam, where the steam exists at the phase boundary between liquid water and