{"product_id":"stirling-engine-d","title":"Stirling Engine D","description":"A functional model of a Stirling engine based on an idea by Professor Wilke optimised for demonstrating to students the conversion of thermal energy into mechanical energy and the operation of a thermal engine, as well as investigating the Stirling cycle.\u003cbr\u003eThe interplay between the displacement piston and the power piston can be seen especially clearly at a low rate of rotation. In this version the displacement piston moves discontinuously, with a dwell time during the heating of the working medium (air) and a second dwell time during its cooling. This offers a clearer demonstration of the ideal Stirling cycle than is possible with continuous piston movement.\u003cbr\u003eThe heat source can be provided by an integrated electric hotplate, a candle flame, or focused radiation from the sun or from a lamp. In the latter case the direction of rotation will depend on whether the heat is applied from above or from below.\u003cbr\u003eFor recording pV diagrams, the pressure can be measured via a rubber hose connection on the power cylinder, and the volume can be measured by attaching a thread to the power piston to follow its movement.","brand":"3B Scientific","offers":[{"title":"Default Title","offer_id":49419054907669,"sku":"3BS1000817","price":1479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/U8440450_01_1200_1200_Stirling-Engine-D.jpg?v=1761021143","url":"https:\/\/unitedsupplycorp.com\/products\/stirling-engine-d","provider":"United Supply Corp.","version":"1.0","type":"link"}