From Newsgroup: uk.d-i-y

The local mega Sainsbury's today had no functional freezer cabinets or
chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill
dumping ensued as totally empty,
Not open 24 hours, but overnight restocking so presumably a supply to
the refridgerators dropping out would be noticed, or is it by law, any
outage for howecer long, foodstuff has to be dumped.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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From Newsgroup: uk.d-i-y

N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or >chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill >dumping ensued as totally empty,

I think that, for power economy reasons, the heat exchangers for
the cabinets are located separately, and in cool weather heat is
recovered for use in the building. It isn't too far a leap to
imagine that, in conditions like today, when all the energy has
to be dumped to the environment, things might be at, or beyond,
their rated capacity, and the whole thing fails.

Chris
--
Chris J Dixon Nottingham UK
chris@cdixon.me.uk @ChrisJDixon1

Plant amazing Acers.
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From Newsgroup: uk.d-i-y

On 26/06/2026 13:37, Chris J Dixon wrote:

N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or
chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill
dumping ensued as totally empty,

I think that, for power economy reasons, the heat exchangers for
the cabinets are located separately, and in cool weather heat is
recovered for use in the building. It isn't too far a leap to
imagine that, in conditions like today, when all the energy has
to be dumped to the environment, things might be at, or beyond,
their rated capacity, and the whole thing fails.

Chris

From a BBC report taday it looks like the freezers and chillers would
be working flat out but with elevated air temperature the temperature in
the chests and cabinets probably go above the legally allowed minima
with no work around, so contents have to be dumped. Shopkeepers have to
keep a log, regularly updated of at least a few representatrive
refrigeration units.
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 26/06/2026 12:33, N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill dumping ensued as totally empty,
Not open 24-a hours, but overnight restocking so presumably a supply to
the refridgerators dropping out would be noticed, or is it by law, any outage for howecer long, foodstuff has to be dumped.

In general the refrigerators are not individual units, but are all part
of a vast heat pump that cools the cabinets and heats the stores, or
today cools the stores and heats the car park.

Perhaps there wasnt enough left over for the cabinets?
--
There is nothing a fleet of dispatchable nuclear power plants cannot do
that cannot be done worse and more expensively and with higher carbon emissions and more adverse environmental impact by adding intermittent renewable energy.

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From Newsgroup: uk.d-i-y

On 26/06/2026 17:14, N_Cook wrote:

On 26/06/2026 13:37, Chris J Dixon wrote:

N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or
chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill
dumping ensued as totally empty,

I think that, for power economy reasons, the heat exchangers for
the cabinets are located separately, and in cool weather heat is
recovered for use in the building.-a It isn't too far a leap to
imagine that, in conditions like today, when all the energy has
to be dumped to the environment, things might be at, or beyond,
their rated capacity, and the whole thing fails.

Chris

From a BBC report taday it looks like the freezers and chillers would
be working flat out but with elevated air temperature the temperature in
the chests and cabinets probably go above the legally allowed minima
with no work around, so contents have to be dumped. Shopkeepers have to
keep a log, regularly updated of at least a few representatrive refrigeration units.

My ageing fridge is unable to keep the ice cream solid.
I'll out it in one of the others
--
There is nothing a fleet of dispatchable nuclear power plants cannot do
that cannot be done worse and more expensively and with higher carbon emissions and more adverse environmental impact by adding intermittent renewable energy.

--- Synchronet 3.22a-Linux NewsLink 1.2

From Newsgroup: uk.d-i-y

On 26/06/2026 12:33, N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill dumping ensued as totally empty,
Not open 24-a hours, but overnight restocking so presumably a supply to
the refridgerators dropping out would be noticed, or is it by law, any outage for howecer long, foodstuff has to be dumped.

My local Sainsbury "corner shop" seems to have had a lot of problems
with refrigeration. A few weeks back ALL their refrigerated cool
cabinets failed (upright shelf units with plastic blinds that are
usually only employed when the outlet is closed*) All this week all
their freezer units are taped off with a notice explaining that the temperature inside is too high and the foodstuffs contained therein
cannot be sold.

*The blinds are sometimes deployed on the few cabinets near a window
when the sun comes around in the late afternoon. During this heatwave
they have also been deployed during opening hours.


Just a general observation based on just a few visits to a large Tesco
local to me that has 6am to midnight opening (except Sunday) and also
has major overnight re-stocking. Frozen food may turn up in a
refrigerated truck but then seems to be left in the back of shop
warehouse until the night shift turns up. I've found that the stuff
being put in then freezers is partially defrosted to a lesser or larger degree.
--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk
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From Newsgroup: uk.d-i-y

On 27/06/2026 06:18, alan_m wrote:

On 26/06/2026 12:33, N_Cook wrote:

The local mega Sainsbury's today had no functional freezer cabinets or
chests perhaps 40/50 or chiller cabinets perhaps 40/50. Lighting and
tills working , so lecky ok. Loads of PV panels on the roof.
So how does such a failure occur? Presumably a huge amount of landfill
dumping ensued as totally empty,
Not open 24 hours, but overnight restocking so presumably a supply to
the refridgerators dropping out would be noticed, or is it by law, any
outage for howecer long, foodstuff has to be dumped.

My local Sainsbury "corner shop" seems to have had a lot of problems
with refrigeration. A few weeks back ALL their refrigerated cool
cabinets failed (upright shelf units with plastic blinds that are
usually only employed when the outlet is closed*) All this week all
their freezer units are taped off with a notice explaining that the temperature inside is too high and the foodstuffs contained therein
cannot be sold.

*The blinds are sometimes deployed on the few cabinets near a window
when the sun comes around in the late afternoon. During this heatwave
they have also been deployed during opening hours.

Just a general observation based on just a few visits to a large Tesco
local to me that has 6am to midnight opening (except Sunday) and also
has major overnight re-stocking. Frozen food may turn up in a
refrigerated truck but then seems to be left in the back of shop
warehouse until the night shift turns up. I've found that the stuff
being put in then freezers is partially defrosted to a lesser or larger degree.

This large Sainsburys has the hot air outlets of a bank of them fed into
one large , perhaps half metre diameter semi-flexible pipe to the roof . Surely that air handling is designed to accommodate all 10 or so being
on full blast together. Perhaps Sainsbury's refrigeration designer set
on lower power units (less initial and running cost) than that required
for just above normal summertime shop air temperature. The shop air temperatures this last week have not seemingly been elevated beyond the usual. I wonder what the hot air handling unit on the roof is like, just vented to the external air or something else?
--
Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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