Watt's second separate condenser, 1765.

Made:
1765 in Scotland and Glasgow
maker:
James Watt

Model of cylinder with separate condenser, formerly described as the "original" model.

Second model separate condenser, formerly described as the "original" model. Made by James Watt (1736-1819), 1765. Early Newcomen engines were inefficient as their working cycle entailed continual heating and cooling of the cylinder, which wasted fuel. The separate condenser meant the steam was condensed in a separate chamber, allowing the cylinder to be kept hot and greatly increasing fuel efficiency. This model was probably made immediately after the first although Watt seems to have quickly forgotten about it. It was preserved not in Watt's garret workshop but, it appears, on the premises of James Watt & Co. The model is more elaborate than the first (preserved under Inventory number 1924-792) but was probably less successful - the pasteboard seal for the cylinder would have caused problems during operation, and the model bears evidence of substantial alterations.

On display

Science Museum: Making the Modern World Gallery

If you are visiting to see this object, please contact us in advance to make sure that it will be on display.

Related people

Details

Category:
Motive Power
Object Number:
1876-1267
type:
condensers
credit:
James Watt and Company
status:
Permanent collection

Cite this page

Rights

We encourage the use and reuse of our collection data.


Data in the title, made, maker and details fields are released under Creative Commons Zero


Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.