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14th November 2011

Bailey Motorhomes Cold Chamber Testing at Millbrook Proving Ground 01 Bailey Motorhome Logo

New Bailey Motorhome Undergoes Cold Chamber Testing

Bailey Approach Motorhome Prototype Takes on Millbrook Cold-Chamber Challenge


 Motorhome owners like to enjoy extended use of their vehicles throughout the year and it is important therefore that it can stand up to the elements - most notably to seasonal variations in temperature.

As part of the pre-launch product development programme Bailey decided therefore to subject their motorhome proto-type to a thermal grading test with the aim of proving that it could match the performance of its current Alu-Tech caravan ranges in achieving Grade III classification of Thermal Insulation (EN1646-I). This is an automotive standard test carried out, in this instance, in a temperature controlled chamber at the Millbrook Proving Ground.

To achieve the Grade III classification a motorhome must have passed a specified two part procedure covering both thermal performance and efficiency of a vehicle.

Thermal Performance  Test Procedure

1. Chamber including motorhome is cooled to - 15 degrees centigrade from an ambient temperature of + 20 degrees centigrade. This takes approximately 10 hours
2. The motorhome heating is turned on and the inside temperature is raised to + 20 degrees centigrade. Maximum time allowed for this exercise is 4 hours
3. The motorhome internal temperature is stabilised at + 20 degrees for one hour
4. Fresh water supply is connected and should be operational within the motorhome at this time when the outside temperature remains at -15 degrees centigrade.

Thermal Efficiency Test Procedure

1. Measurement of the power requirement needed to sustain an internal temperature at +20 degrees for two hours with an outside temperature of -15 degrees centigrade.
2. Motorhome was heated using the internal power supply from the Truma combi boiler
3. U-Value is calculated by dividing the Power Consumption by the multiple of the Internal Area and the Temperature Difference. Maximum U-Value permitted is 1.2 W/m2K.

Details of the results of the testing will be published shortly.

Click here for more details of the new 2012 Season Bailey Motorhomes.


Bailey Motorhomes Cold Chamber Testing at Millbrook Proving Ground 02