The initial concept for this type of Stirling engine was developed by Wilfried Schlagenhauf in Germany in 1991. Mr. Schlagenhauf, a school technology teacher, originally came up with the concept in order to better demonstrate the principles of Stirling engines to his students. A Stirling Engine is a heat engine that operates by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work. It was originally utilized as an alternative for the steam engine, but was mostly used in low-power domestic items. It is, however, very quiet and efficient. Most Stirling engine designs incorporate a cylinder and power piston as well as a diplacer piston. Mr. Schlagenhauf searched for a way to eliminate the higher priced cylinder and piston arrangement. The balloon eliminated the need for the expensive, close tolerance power piston. Having the cylinder tilt away from the heat source rather than a displacer piston being pushed back and forth greatly simplified and lowered the cost of the apparatus. This kit allows you to build a close approximation of the design Mr. Schlagenhauf pioneered, and makes for an excellent classroom demonstration, science project, or family activity.
These goggles meet the American National Standards Institution (ANSI Z87.1) and Canadian Standards (CSA Z94.3) regulations.
Professional Powder-Free Textured Nitrile Exam Gloves with Aloe, Size Large
These ear plugs are made of self adjusting foam that provides a comfortable, low pressure fit and excellent sound filtration.
This set includes three (3) N95 FDA registered and NIOSH approved and respirators.
These medium, powder-free Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
High-protection, fluid-resistant and anti-static disposable lab coat in size Large.
This caffeine molecule mug makes an excellent gift!
This glass Erlenmeyer mug makes an excellent gift!
Infiniview comes with a 3.5" LCD screen and rechargeable Lithium Ion battery that will last up to 2 hours in the field.
Discover how solar cells make electricity with this awesome kit!
Build your very own smart robot!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
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