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The Glass Pool · KUECHE

Walk-in cooler & freezer

Kitchen — refrigeration, dishwashing, cooking, exhaust. Part of the glass family — like our glass BESS, biogas plant and CHP.

Walk-in cooler & freezer
Condenser → Compressor → Cold room → Stock
Glass-box in 4 steps

Understand → See it live → What the AI does → Your benefit

Step 1 of 4
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Understand
2
See it live
3
What the AI does
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Your benefit

What is Walk-in cooler & freezer?

Cold rooms and freezers run without interruption. Their consumption depends less on the setpoint than on three things: how often the door stands open, how well the seal closes and how badly the evaporator is iced up.

A gradual deterioration does not show in the temperature — the controller holds that to the last. It shows in the run time: the compressor runs longer for the same result.

What is measured here

  • Room temperature for cooler and freezer
  • Compressor run time per hour (the real early indicator)
  • Electrical power of the refrigeration unit
  • Defrost cycles per day

How we connect it — read-only

  • Room sensors over Modbus or from the BMS — the cold chain stays documented.
  • Modbus sub-meter on the refrigeration unit feeder.
  • Clamp-on current transformers as a retrofit where no meter sits.

Schematic (native, live)

Kitchen — refrigeration, dishwashing, cooking, exhaust.

CondenserCold roomStock

Overview: The Glass Pool → · Markets: pool markets →

Live —

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What the AI does

  • Detects rising compressor run time at unchanged room temperature — seal, icing or refrigerant.
  • Flags excessive door openings from the temperature pattern.
  • Checks whether the defrost cycles match actual icing instead of running on a fixed timer.
  • Moves pre-cooling out of the peak-service demand window.

Method proven on a live European reference aquatic center; presented anonymously.

Extra consumption from run time

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Estimate from metered / design values. Zero-grid-import windows are real (metered).

Standards & norms

What the rules require — Walk-in cooler & freezer

Grounded in DIN 19643, VDI 2089, DGfdB and the German Buildings Energy Act. Same knowledge base as the European reference site; presented anonymously.

Why is run time more meaningful than temperature?

The controller holds the setpoint as long as it can — running continuously if need be. So the temperature looks fine while consumption has long been climbing. Run time per hour exposes the deterioration immediately.

Basis: plant engineering

What does a leaking cold-room door cost?

That depends on room size, temperature difference and how often it is opened, and can only be quantified on the specific installation — it becomes measurable through the additional compressor run time.

Basis: plant engineering

Can refrigeration be shed to avoid a demand peak?

Briefly yes, but only within the hygienically permissible temperature band and never at the expense of the cold chain. The stronger lever is moving pre-cooling and defrost out of the demand window.

Basis: plant engineering

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