CARRIAGE AND RAILCAR HEATING. TESTS WITH THERMOSTATS AND CONTACT THERMOMETERS

This report gives an account of the tests carried out with six thermostats and four contact thermometers which might be considered to be representative of the devices used by the Western European railways for regulating the temperature of passenger coaches. The object of the tests was: to examine the characteristics of the devices when new, to submit them to an artificial aging similar to a period in service in a coach of two years, and to re-examine the characteristics of the devices after aging. It became apparent that: the switching-on and switching-off temperature of certain devices had changed; aging did not exert an influence with an appreciable tendency on the switched-on and switched-off times of thermostats with thermal feed-back; and the thermal inertia of the thermostats which underwent the complete aging test had increased. The extent of these variations is shown in the tables and diagrams. It is felt that it is necessary to draw special attention to the aim of the tests which was to ascertain the properties of the thermostats from that standpoint of the regulating technique and their modification as a function of the time. Since only one specimen of each thermostat type could be tested, the tests do not therefore provide any information about the reliability of these thermostats in service.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1965-6

Media Info

• Features: Figures; Tables;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Air conditioning systems; Equipment tests; Heating, cooling and ventilation equipment; Passenger cars; Tests; Thermometers; Thermostats
• Old TRIS Terms: Question b30; Test equipment
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00053064
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: B30/RP 20/E Intrm Rpt.
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM