---
author: Akbar Rahman
date: \today
title: MMME2047 // Thermodynamics
tags: [ mmme2047, uni, thermodynamics ]
uuid: d2b36b74-0661-47d2-8c1f-0bf7747ba7eb
---

As this module builds on MMME1048, content covered in pages tagged [mmme1048](/.tags/mmme1048.html)
may not be covered in these pages.

# Data and Formula Sheet

## International Association for the Properties of Water and Steam (IAPWS)

- <http://iapws.org/relguide/IF97-Rev.html> 
- [backup of IF97-Rev.pdf](./data_and_formulae_sheets/IF97-Rev.pdf)

## Thermodynamic Tables to Accompany Modern Engineering Thermodynamics (Robert Balmer)

- [Thermodynamic Tables to Accompany Modern Engineering Thermodynamics](https://ebookcentral.proquest.com/lib/nottingham/reader.action?docID=625295) (paywall)
- [Pages 1-16](./data_and_formulae_sheets/thermodynamic_tables_robert_balmer.pdf)

# Terminology

- State --- condition of a fluid in a particular region, defined by properties
- Property --- a measurable variable characteristic of a fluid
- System --- a region of a fluid contained by real and/or imaginary boundaries
-

# Lecture 1 (W03/40)

## Graphical Representation of Properties

### When is a Graph a Chart?

Graphs plot the relationship between two component characteristics.

A chart has the relationship between the two component characteristics but also plots lines of other
variables on top of them, allowing them to represent more 'dimensions' of the system.


### Temperature vs Specific Entropy

![](./images/vimscrot-2022-10-17T11:11:56,842719958+01:00.png)

The orange line is liquid, the flat blue bit is wet steam, the steep blue bit is superheated steam.

### Specific Enthalpy vs Specific Entropy

![](./images/vimscrot-2022-10-17T11:16:32,326087977+01:00.png)

### Pressure vs Specific Enthalpy

![](./images/vimscrot-2022-10-17T11:21:53,069413177+01:00.png)

## Transport Properties

Transport properties are of use for working out the flow behaviour.

These are:

- density

    Density is affected by temperature and pressure. We know perfect gases have equation of
    state but we need to use tables for steam an R134a as they are not perfect gases.

- viscosity

    Viscosity in all fluids varies with temperature.
    On page 10 of the tables there is viscosity of steam and water liquid stated in dynamic form.

    $$\nu = \frac\mu\rho$$

    (kinematic viscosity = dynamic viscosity / density)

- Prandtl number
- thermal conductivity

# Lecture 2 (W04/41)

![](./images/vimscrot-2022-10-17T12:30:52,395521201+01:00.png)

1. Throttle
2. Evaporator
3. Compressor
4. Condenser