On Fri, 27 Feb 2004 13:25:53 -0000, "Notty Pine"
wrote:



I am still not convinced about your results. If a thermostat was set
to less than a 1 degree C difference, between on and off, as you
implied with your test results, then the freezer compressor would be
constantly switching on and off, which would cost a fortune to run as
compressors use a high starting current.


No it wouldn't. The rate of temperature change inside when the
compressor is not running is determined by the effectiveness of the
insulation and by the ambient temperature.

I am referring to an A+ efficiency graded appliance and much of that
capability is as a result of insulation and of close control.

It is therefore quite reasonable for it to have a small hysteresis
because this will not result in rapid switching on and off.


The results are the results. I'm sorry if they don't fit in with
your preconceived ideas and older technology.






..andy

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