Stirling Engines

Written in 1931 by S.H.Moorfield,M.Sc(Manch),A.M.I.Mech-E,Head of the Mechanical and Engineering Department at Wigan and District Mining and Technical College.And H.H.Winstanly,BScEng(Lond.1st Cl Hons),M.I.MechE,Lecturer in Mechanical Engineering at Wigan and District College.

Contents :
- I/-Work.
II/-Power and Energy.
III/-Heat and it's measurement.
IV/-Thermal properties of perfect gases.
V/- Heat changes in gases.
VI/-Expansion and compression of gases.
VII/-The Working Cycle.
VIII/-The formation and properties of steam.
IX/-Steam Boilers.
X/-The Steam Engine Plant.
XI/-Hypothetical indicator diagram.
XII/-Entrophy and entrophy diagrams.
XIII/-Entrophy applications.
XIV/-Valves and Valve Gear.
XV/-Combustion.
XVI/-Internal Combustion Engine.
XVII/-Heavy Oil Engines.
XVIII/-Efficiencies.
XIX/-Engine trials.
XX/-Speed Control.
XXI/-Steam Turbines.
plus - Steam tables.
Answers.
Published by Edward Arnold & Co. in 1949.

Stirling engines can be hard to understand. Here are the key points. Every Stirling engine has a sealed cylinder with one part hot and the other cold. The working gas inside the engine (which is often air, helium, or hydrogen) is moved by a mechanism from the hot side to the cold side. When the gas is on the hot side it expands and pushes up on a piston. When it moves back to the cold side it contracts. Properly designed Stirling engines have two power pulses per revolution, which can make them very smooth running. Two of the more common types are two piston Stirling engines and displacer-type Stirling engines. The two piston type Stirling engine has two power pistons. The displacer type Stirling engine has one power piston and a displacer piston.

The hot air engine is one of the easiest models to build.No boiler is needed and it starts in a few seconds when the lamp is lit.

A hot air engine originally called the "caloric" engine was first built in 1807.Theoretically it is a perfect heat engine but practical building and design problems present difficulties which lower its efficiency greatly.

In the 1850s Ericsson built a large passenger ship driven by a hot air engine.Present day uses are limited to stationary power plants to drive all kinds of machinery since the power to weight ratio limits use in moving equipment.

These plans which were published in 1913 come with complete instructions for building a hot air engine.No power tools or machining are required.Simple items such as tin cans and copper tubing make most of the parts.The only part which you would have to buy or make is a flywheel of steel or iron .You can probably borrow one off an old model steam engine.

This is a very simple stirling hot air engine which will give you great pleasure in its building and it can put out enough power to drive Meccano or Erector models or any similar items.It is a great conversation piece when mounted on a nice wooden base and displayed to interested parties as it chuffs to life and runs merrily along.Get your copy of this great plan now and build this easy model.

You are buying the four pages of plans and instructions only.

In this book James Rizzo describes in detail the two earliest surviving hot air engines, and how to build working replicas, or reduced sized models of them. The two engines concerned are those which Robert Stirling presented to the University of Edinburgh, and slightly later, to the University of Glasgow, to demonstrate his 'Air Engine'. The exact dates these were built is not known, but were certainly before 1825. The Edinburgh model is the more original, as the Glasgow model was discovered in an old store by Prof. William Thomson, later Lord Kelvin, in 1847. He dismantled it to see how it worked, and restored it to working order, along the way establishing the Absolute Scale of Temperature, the term "energy" and invented the name of a new science - Thermodynamics.

100 page, high quality paperback, full of drawings and photographs of all parts of the engines.

A 160 watt dual-opposed Stirling engine power system has been developed for the U.S. Army
for remote power and battery charging applications. The Stirling engines were developed under a Phase II
NASA SBIR by Sunpower Inc. The propane burner was developed by Precision Combustion Inc. under a
DARPA SBIR program.
Earlier papers have dealt with a number of aspects of the 160 watt power system development program.
This paper takes a look at the challenge of controlling small propane burners for a range of Stirling engines.
This paper will discuss the bring up algorithm and the closed loop digital control of the engine acceptor
temperature in the presence of load disturbances and inherent system non-linearity.
The combustor of these small burners are catalytic and use a fine structure catalyst known as Microlith® to
reduce the ignition time while maximizing the surface area. The challenge of the control system is to bring
the engine head up to temperature , and maintain that temperature, without damaging the catalyst structure.
Strategically placed temperature sensors measure the catalyst, flame, and engine acceptor temperatures.
These measurements are used as process variables by the bring up and digital closed loop control
algorithms to engender a temperature response at the acceptor that is acceptable in terms of response time,
overshoot, and stability in the presence of changes in the dynamic behavior of the engine resulting from
load changes.

Slightly amended second edition. Nikola Tesla is famous for the Tesla Coil, but another of his inventions is the subject of this book and had nothing to do with electricity, other than as a possible means of generating it. This was his Disc Turbine for which a British Patent, which also covered a compressor variant, was granted in 1910. Unlike a conventional turbine, in which the rotor consists of bladed segments, in Tesla’s machine these were replaced by discs, working on the concept of flowing media being converted to rotary motion by friction working on the discs. Tesla claimed that a very small, but extremely powerful machine was possible using this principle - his aim was to produce a 25 hp machine that would fit inside a bowler hat. Here W. Cairns describes in detail the concept, and the history, of the original engines. He then proposes a number of uses for such turbines, including car and light aircraft use, all of which illustrate the extraordinary versatility of Tesla’s engine. Finally he provides the design and building instructions for a small Tesla turbine which any model engineer should be able to build. Not only does a Tesla Turbine provide a very high power to size ratio, it can be used as a compressor or pump. Tesla used steam on his test machines, and the model featured here would probably be run on compressed air, but the gas turbine principle can also be used; this really is a remarkably versatile machine. This versatility means that ninety four years after the original Patents were granted there are signs of re-awakened interest in Tesla’s machine, as many of the original problems can be overcome with modern materials. What is really exciting is that any revival can be boosted by individual experimenters- here is the place to start! High quality. 34 A4 format pages. Numerous drawings and sketches, including 6 pages of drawings specifically for a small Tesla turbine you can build.