On Wed, 02 Jan 2019 16:53:28 -0000, Bob F wrote:

On 1/2/2019 5:36 AM, trader_4 wrote:
On Tuesday, January 1, 2019 at 4:07:50 PM UTC-5, Commander Kinsey wrote:
On Tue, 01 Jan 2019 10:28:51 -0000, alan_m wrote:

On 31/12/2018 21:44, William Gothberg wrote:

It's a perfectly valid question, why are we still using equipment that
needs running so often?

Proportional control rather than bang/bang control?

If the insulation was better than that used 30 years ago, then the time between switching off and back on again would be longer, as less cold would leak out - this can be verified by observing the sides are cold. Also, if you look at the energy ratings on various freezers, you'll find a factor of almost 4 between different models, so clearly some are using really **** insulation.


Another incorrect conclusion. It's also very likely that newer fridges
maintain temperature more accurately than old ones. New ones, for example,
mostly have electronic controls now and don't rely on an old bi-metal
thermostat design. To maintain temperature closer, the off time would
be shorter, regardless of the insulation.

I am sure the new freezers run longer because that is what they are
designed to do. It is more efficient than having them short cycle. Every
time it cycles, power is used just getting temps to working levels, and
longer running time allows smaller more efficient compressors.

They don't seem to run longer, they run the same as the old ones. But I can tell they're outputting just as much cold. When you first turn them on, they get down to temperature just as quickly. So if the output of th compressor is the same with new ones, it shouldn't have to run so much if the insulation has been improved.