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Study 2. Working with Physical Quantities: Problems and Solutions

ValeryOchkov
24-Ruby IV

Study 2. Working with Physical Quantities: Problems and Solutions

2-25-eng.pngThis study deals with the use of dimensional quantities in thermal calculations. The main aspects of work with dimensional variables in thermal calculations are given. The concepts of physical and empirical formulas are extended by pseudo-empirical formula concept. Few samples are provided.

You can download sheets of figures:

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Fig. 2.1. Using units in Mathcad 15

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Fig. 2.2. Working with empirical formula

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Fig. 2.3. Working with pseudo empirical formulas

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Fig. 2.4. Formula for the conversion of concentrations from the Internet

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Fig. 2.5 Conversion of Molarity à Molality

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Fig. 2.6. Pseudo-empirical Formula as a purely empirical formula

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Fig. 2.7. Using Formula like a physical one

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Fig. 2.8 Working with Temperature scales

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Fig. 2.9 Working with temperature scales in Mathcad 13/14/15

 

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Fig. 2.10 Working with dB

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Fig. 2.11 Working with decibels and a reference to the base

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Fig. 2.12 Tube Calculation

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Fig. 2.13 Emergency stop during pump-calculation

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Fig. 2.14 "Fixing" the emergency stop with an error

 

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Fig. 2.15 Pump-calculation without units

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Fig. 2.16 Calculating the volume of a cylinder

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Fig. 2.17 Function call with different dimensions of the arguments

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Fig. 2.18 Creating and calling "dimensional" user function

 

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Fig. 2.19 Error while using a user function

 

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Fig. 2.20 Calculation of the volume of a cylinder with full control

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Fig. 2.21 Using WaterSteamPro in Mathcad

 

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Fig. 2.22 Using WaterSteamPro with units

 

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Fig. 2.23 WaterSteamPro functions with units in Mathcad Prime 3 (WaterSteamPro needed -see http://www.wsp.ru

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Fig. 2.24 Performance assessment of a combined cycle plant

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Fig. 2.25 Demonstration of the toolkit for creating different quantities with the same unit

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