Stirling Engines

Background

During the early days of the Industrial Revolution, the brothers James and Robert Stirling were looking for a safer alternative to the conventional steam engines of the time. In 1815 they invented their so-called Stirling Engine and built a first prototype. Because the Stirling Engine used air instead of steam as working fluid it avoided the risk of explosion of the steam engines, all too common in those days. The Stirling Engine is a vastly different heat engine from the internal-combustion engine in your car or a steam engine. It has the potential to use any heat source as fuel and can be more efficient than a gasoline or diesel engine. As the limits of our fossil energy resources became obvious, scientists and engineers recalled the old Stirling principle to use alternative energy sources. During the 1980's Prof. I. Kolin (University of Zagreb), Prof. J. Senft (University of Wisconsin) and others developed the first engines using an adapted Stirling cycle with a temperature differential below 20 degrees Celsius. Their work provides the possibility of designing Stirling Engines powered by un-concentrated sunlight or waste heat.
Our Stirling Engines demonstrate the conversion of low temperature heat and light into mechanical energy. These engines are highly suitable as demonstration models for physics courses in schools and universities, to illustrate elements of classical mechanics and thermodynamics, as well as the principles of solar energy conversion.

Our Engines

Price: 84 €

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Ecorun - Candle Stirling Engine

In 2004 we decided to design a Stirling Engine to be available for less than 100 EUR: The result is our latest Stirling Engine Ecorun. The design is inspired by the "look and feel" familiar from famous construction kits like Meccano, Erector or Eitech. We combined some of these off the shelf parts with a high precision piston/cylinder assembly. The housing has red (heating) and blue (cooling) aluminum plates. The engine runs out of the box: - put the food warmer candle in the stand (both included), light the candle and set the engine on the top of the stand. After a few minutes, spin the prop and the engine will start running. A quick and simple demonstration of the conversion of heat into mechanical work.

download pdf manual | category: Stirling.Engines | product: Ecorun

Price: 520 €

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HeatPower - High Temperature Stirling Engine

Generate electricity with Stirling Engine technology: HeatPower is a combination of an alcohol powered Stirling engine with an electric generator. To achieve a transparent design most parts like the piston/cylinder, the flywheel and the base plate are made of glass or acrylic plastic. The electrical unit consists of a DC generator and a rocker switch for connecting either the built-in light bulb or the jack sockets for external loads. A few minutes after lighting the alcohol burner (included), the engine will run at about 1,000 rpm. The coupled electrical generator produces up to 1 Watt of electrical power to drive the light bulb or an external load. HeatPower may also be used to demonstrate the principle of a heat pump. By connecting the generator to an external voltage supply of 12 V DC, it operates as a motor. Depending on the polarity, i.e. the direction of its rotation, the displacer glass cylinder will be cooled or heated. A great demonstration of the conversion of heat into electrical energy and vice versa.

download pdf manual | category: Stirling.Engines | product: HeatPower

Price: 311 €

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HeatPowerKit - High Temperature Stirling Engine
with Dynamo and Electric Load - Kit

The kit includes all the parts (about 50) to build the engine. No machining is required. Only common hand tools, and epoxy glue are needed to put it together. The alcohol burner and a detailed instruction manual are included. Assembling the engine is an interesting way to learn about Stirling Engines, their function and design.

download pdf manual | category: Stirling.Engines | product: HeatPowerKit

Price: 199 €

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Solaris - Solar Stirling Engine

Our Solaris Solar Stirling engine runs on direct sunlight! Depending upon the sun's incident angle, the engine typically runs at 200 to 400 rpm. Alternatively, it can be run indoors by a lamp. It's made of high quality materials and all the moving parts are visible. The engine design contains many innovations and dramatically demonstrates the conversion of light into mechanical movement.

download pdf manual | category: Stirling.Engines | product: Solaris

Price: 199 €

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Ultra - Heat of your Hand Stirling Engine

The Ultra low temperature-differential (ltd) Stirling engine will actually run on the heat of your hand! Place this beautiful precision engine on any warm surface and within a few minutes it's chugging away. The engine runs any time the temperatures of the top and bottom plates differ by more than about 10° Celsius. Its upper black aluminum plate actually absorbs enough heat in direct sunshine to run on solar power. You may also try a cup of hot coffee, your computer monitor ... By placing the engine on some ice cubes, it is even possible to drive the engine by the heat of the surrounding air in the room. This is a great thermodynamic demonstration of air pressure change due to alternate heating and cooling.

download pdf manual | category: Stirling.Engines | product: Ultra

Price: 124 €

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UltraKit - Heat of your Hand Stirling Engine - Kit

The Ultra low temperature-differential Stirling engine as kit: It takes about 2 to 4 hours to assemble this great little precision engine. The kit includes all the parts and instructions to build the engine. No machining is required. Only common hand tools and epoxy glue are needed to put it together. It's a great pleasure to assemble a real little Stirling motor yourself and watch it running by the heat of your hand, a coffee cup or ice cubes.

download pdf manual | category: Stirling.Engines | product: UltraKit

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Keywords

Stirling Engines, Hotair Engine, Hot Air Engine, Stirling Engine, Sterling Engine, Stirling Model, Heat Engine, Stirling Cycle, Stirling Engine Kit, Solar Engine, Solar Stirling, Heat of your Hand Engine, Robert Stirling, Sadie Carnot, Ivo Kolin, Jim Senft

Stirling Engines

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