Professionnal cold accumulator

Professionnal cold accumulator

A lot of cold accumulators are available on the market, which does not make it easy for a professional to evaluate the offer and choose a performing ice pack.

Pack, block, gel, etc…

The names for cold accumulators are multiple : cartridge, pack, plate, block, gel… and generally associated with the terms ‘cold’, ‘eutectic’ or ‘refrigerating’.

Professional cold accumulator

For your private use, it is rather simple : the ice pack keeps your goods chilled inside your cooling box during a few hours, the time for a picnic. This type of ice pack is generally filled with water.
A professional cold accumulator is full of eutectic fluid and it is way more powerful in terms of duration, quality and temperature performance. The ice pack for professionals is a more complex device with specific characteristics.

EUTECTIC COLD
COLD ENGINEERING

Temperature

Thermosensitive health products and chilled or frozen foodstuff are maintained at different temperatures. The temperature of the accumulator will be chosen according to which temperature is needed.

The temperature of a cold accumulator is given by the ‘melting point’ (point of temperature phase change) of the eutectic fluid. OLIVO’s eutectic plates can be used for 7 different temperatures, negative or positive. The choice of the good temperature also depends on the ambient conditions of use (specific climate conditions).

If you need the eutectic plate to release +2°C, the climate factor (temperate, cold, warm) will have to be taken into account for the choice of the temperature of your cold accumulator.
The melting point is thus an important characteristic of the cold accumulators for professionals who want to respect their cold chain specifications.

Latent heat

Once the temperature is defined, you will need to know how much cold (how many frigories) you will get from the accumulator. This depends on the size of the accumulator, i.e. the quantity of eutectic liquid contained in the envelope.

The latent heat of a cold accumulator is expressed in Joules.

Depending on the duration needed, one or several cold accumulators can be necessary.
The latent heat released directly influences the time during which temperature is maintained. This is an essential technical datum for the qualification of a professional cold accumulator.

EUTECTIC PLATES RANGE

The colder, the better it works

You might be tempted to choose a -21°C eutectic plate to transport chilled foodstuff, in order to « boost the system » and increase the preservation duration…

This is not a good idea : you might spoil the foodstuff by freezing them, and the cooling duration would not necessarily be longer.
Contact us ! The OLIVO teams will advise and guide you in the analysis of your thermal needs and acquisition of the appropriate product.

HOW TO USE EUTECTIC PLATES

The eutectic temperature release

All cold accumulators are not equal even if they have similar heating point and latent heat. The quality of the eutectic temperature release is often what makes the professional cold accumulator better.
When it thaws, the cold accumulator slowly releases its frigories at a stable temperature, which is the eutectic liquid temperature phase change (or melting) point. This is called ‘eutectic temperature release’.
If the core temperature of a thawing -12°C cold accumulator is measured, the temperature curve is flat and stable with a regular -12°C temperature.
A flat and regular eutectic temperature release is the sign of the quality and stability of the temperature you will get.
This characteristic is not easy to measure but a good professional will be able to help and inform you.