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What measurement actually found.

Industrial laundry shops, connected and measured cycle by cycle. Sites anonymised, figures raw.

1.84 M
Linen passes analysed over five years
25 weeks
Of gas read machine by machine
42
Boiler-house rounds analysed
9
Dryers monitored individually
Finding 1

One cycle in five runs at a quarter of its load.

Each dryer can take 4 loads. Here is how the 1,628 cycles of one week actually ran — a detail no energy bill will ever show.

Drying capacity actually used

One full week · 9 dryers · 1,628 cycles
Capacity used: 24.2% 24.2 % OF CAPACITY USED load 73.8% × utilisation 32.8%
1,707 empty slots over the week, that is 80.6 tonnes that would have gone through the same cycles.

Breakdown of cycles by how full they ran

Machine capacity: 4 loads per cycle
4 loads — 864 cycles (53.1%) 4 LOADS53.1 % 3 loads — 177 cycles (10.9%) 3 LOADS10.9 % 2 loads — 231 cycles (14.2%) 2 LOADS14.2 % 1 load — 356 cycles (21.9%) 1 LOAD21.9 % 01,628 cycles A quarter-load cycle burns almost as much as a full one.
On top of that, 552 hours of cumulative waiting between cycles, spread evenly across the whole fleet.
Finding 2

Your best machine is already in your shop.

Six identical dryers, same shop, same linen. And yet a 25% gap between the leanest and the thirstiest — a gap you only see by metering machine by machine.

Gas used per tonne dried, machine by machine

25 weeks of individual metering · cubic metres per tonne · lower = leaner
Machine A — 48.6 m³/t MACHINE A 48.6 the leanest Machine B — 50.7 m³/t MACHINE B 50.7 Machine C — 54.8 m³/t MACHINE C 54.8 Machine D — 56.8 m³/t MACHINE D 56.8 Machine E — 58.1 m³/t MACHINE E 58.1 Machine F — 60.8 m³/t MACHINE F 60.8 the highest 0 60.8 m³/t
Shop benchmark: 54.7 m³/tonne, that is 1.05 kWh per kilo. Bringing machine F down to machine A would be worth roughly 7,127 m³ of gas over the period — with no investment, since the reference settings are already on site.
Finding 3

The machines had not drifted. The loading had.

A shop was watching its consumption climb and suspected worn machines. Measurement showed the opposite — and avoided a pointless investment.

Two measurements, one same movement — over twelve months

Each curve has its own scale. As loads get lighter, consumption per kilo climbs.
AVERAGE WEIGHT PER LOAD — KG January: 50.4 kg February: 51.3 kg March: 50.4 kg April: 50.6 kg May: 50.0 kg June: 49.9 kg July: 49.3 kg August: 49.4 kg September: 48.7 kg October: 48.5 kg November: 48.9 kg December: 48.3 kg 50.4 48.3 CONSUMPTION PER KILO OF LINEN — KWH January: 0.85 kWh/kg February: 0.88 March: 0.93 April: 0.91 May: 0.88 June: 0.87 July: 0.89 August: 0.87 September: 0.94 October: 0.95 November: 0.92 December: 0.92 0.85 0.92 JAN APR JUL OCT DEC
Average weight per load Consumption per kilo
Correlation r = −0.86. Loading accounts for 98 % of the gap between the two half-years. Over the same period, the gas used per load was stable (−1.9%): no machine drift at all.
Finding 4

In the boiler house, small instabilities cost money.

78 to 105 °C

From one round to the next on the feed tank, averaging 90.8 °C. Every 6 °C lost is roughly 1% more fuel.

42 rounds analysed

pH 7.19 → 6.73

A clear and permanent shift in the discharge. The signature of tired water treatment: corrosion of the return lines in time.

dated break, minimum 6.41

1 reading in 2

Unusable on discharge flow — 24 rounds out of 36 at zero. We make the reading reliable before analysing anything.

deciding on false data costs more

50 to 250 MWh/year

Order of magnitude for a blowdown valve leaking continuously. Reported at the start of the period, never confirmed repaired by any round.

depending on the size of the leak
An honest caveat

These are findings, not promises.

These figures describe specific installations over specific periods. They show what cycle-level measurement makes visible — they say nothing about what we would find at your site. We never quote a percentage saving before we have measured.

Sources. Studies carried out in industrial laundries: 1.84 M linen passes analysed over five years plus one full week detailed across 9 dryers (1,628 cycles, 226.8 t) · 25 weeks of gas read on individual meters across 6 comparable dryers · 42 boiler-house rounds over three months · multi-year weekly utility tracking. Site identities, locations and equipment brands are not disclosed. Some values are estimated and calibrated: this is stated in the source reports, available on request.

Let us see what DConnect would read at your site.

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