Frequently asked questions about cooling technologies

What is the difference between evaporative and adiabatic cooling? In which cases should you choose an open- or closed-loop cooling tower? What is subcooling? A continuously updated section to answer frequently asked questions in the industrial and civil fields.

Selecting the Best Industrial Cooler

How can I achieve maximum energy efficiency from my industrial cooler?

Maximum energy efficiency can be achieved through a number of measures: for example, sizing a cooling system according to exact cooling needs, or little oversizing.

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What factors should I consider when choosing the best industrial cooler for my needs?

Choosing the best industrial cooling system depends on several factors. Among them: the required cooling capacity.

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How is an industrial cooler sized and cooling capacity calculated?

The required cooling capacity, and the consequent sizing of the cooling system, can be calculated by an engineer experienced in industrial cooling.

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Are there tools for “objective” industrial cooling system selection, such as calculation software?

Yes, there are calculation and sizing software: some manufacturers and cooling consultants use them in recent years to make a selection that is as tailored as possible to the needs of the individual project.

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What are the questions I need to ask an industrial cooling expert?

This is not something to worry about: the cooling consultant knows the right questions to ask for the selection of the best cooler, supported also by advanced software for calculation, selection, and resource optimization.

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What are the costs of a consultation with an industrial cooling expert?

Pre-order consultation with an industrial cooling expert is often free of charge: consultant and customer can then jointly evaluate the selection of a cooler, based on specific project needs.

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What are the special features of each type of industrial cooler?

Each type of industrial chiller has its own distinctive characteristics. In general, air cooling has lower efficiencies than other systems, especially in warmer seasons. In contrast, evaporative systems (wet cooling towers and evaporative gas condensers) have higher efficiencies.

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What are the different types of industrial coolers available?

There are several types of industrial cooling systems. These include: cooling towers and adiabatic coolers.

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Evaporative and Adiabatic Cooling Systems Compared

How does an evaporative cooling system work?

All evaporative cooling systems use the evaporation of a small amount of water to lower the temperature of the larger mass of water. There are three main types of evaporative cooling systems: open circuit cooling towers, closed circuit cooling towers, and evaporative condensers.

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How does an adiabatic cooling system work?

An adiabatic cooling system (liquid adiabatic dry cooler, gas adiabatic condenser) is a system that combines the principle of a dry cooler with adiabatic pre-cooling of outside air.

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What are the advantages of evaporative cooling?

In summary: high cooling efficiency, low operating costs, and others related to the operation of the technology.

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What are the use cases for adiabatic cooling?

Adiabatic cooling systems (adiabatic dry coolers for liquids, adiabatic condensers for gases) are the optimal solution where the goal is to save water, either due to the absence of that resource or to risks associated with its management.

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Which system is best suited to my needs?

Choosing the system best suited to your needs depends on several factors, mainly related to the specifics of the individual plant project to be developed: an exchange of information with a cooling consultant is often helpful.

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What are the use cases for evaporative cooling?

Wherever there is a process fluid to be cooled, up to a temperature of a few degrees above the wet bulb temperature of air, an evaporative cooling system can be used.

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What are the advantages of adiabatic cooling?

Some main advantages can be enumerated, related to reduced water use and optimized operation during different seasons and times of the day.

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What are the main components of an evaporative cooling system and an adiabatic cooling system?

The structure and components of the two systems are, of course, a consequence of the two different operating principles.

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What are the differences between evaporative and adiabatic cooling?

The main difference between the two systems is the way cooling itself takes place, especially in the different use of water and energy: both in terms of process and the amount of resources used.

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What are the commonalities between evaporative and adiabatic cooling?

Evaporative and adiabatic cooling both take advantage of air to lower the temperature of a process fluid (water, water and glycol, gas).

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Open- and Closed-Circuit Cooling Towers

D’autres systèmes de dissipation de la chaleur exploitent-ils le principe de l’évaporation ?

Les condenseurs évaporatifs fonctionnent de la même manière que les tours de refroidissement en circuit fermé. La seule différence réside dans le fluide de traitement, qui est un gaz réfrigérant.

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What principle is exploited by open- and closed-circuit cooling towers?

Both open-circuit and closed-circuit towers exploit a very efficient operating principle: forced evaporation of a minimum amount of water causes a lowering of the temperature of the main water mass.

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What is the main difference between open and closed circuit cooling towers?

The difference between the two systems lies in the different type of circuit exploited for cooling the process fluid.

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What are the costs of an open- or closed-loop cooling tower?

They vary according to type, capacity, and specific characteristics: from a few thousand euros to hundreds of thousands.

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What are the main components of an open or closed tower?

Based on the partially different operating principle, there are some common and some peculiar components of the two types of evaporative cooling systems.

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What are the advantages of open-circuit evaporative cooling towers?

In summary: Low installation and maintenance costs and very high cooling efficiency.

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What are the advantages of closed-loop evaporative cooling towers?

Among in main advantages: no contamination of the primary circuit and reduced risk of freezing by being able to insert ethylene glycol into the circuit, for example.

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Alchemist Adiabatic Subcooler

What is subcooling in refrigeration systems and how can it be achieved?

Subcooling is the reduction of the temperature of the refrigerant leaving the condenser.

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What benefit does subcooling bring to the refrigeration cycle?

Subcooling results in an increase in the cooling capacity of the system, hence electrical savings and a higher COP (coefficient of performance).

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What is Alchemist, the adiabatic subcooler?

Alchemist is a patented solution from MITA Cooling Technologies that combines the useful effect of subcooling with the natural and efficient operating principle of an adiabatic cooler in a single device.

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How does Alchemist, the adiabatic subcooler, work?

A fan draws in a portion of air from the outside environment and then runs it through a finned coil inside which circulates the refrigerant to be subcooled.

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What refrigerants can Alchemist handle?

Alchemist can be used with any type of refrigerant.

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Which sub-cooled refrigerant gives particular advantages?

The thermophysical characteristics of R744 make this refrigerant perfect for subcooling.

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Why choose Alchemist over a common adiabatic gas cooler in a system with R744?

An adiabatic gas cooler must adiabatically cool the entire air flow rate of the gas cooler itself, Alchemist works only on the subcooling air flow rate.

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Where to use Alchemist?

Downstream of a gas cooler in R744 systems, we have several references in commercial refrigeration, or combined with a refrigeration unit.

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What maintenance does Alchemist require?

Alchemist is designed to bring efficiency to the system, which is why it does not require frequent or special maintenance operations.

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What are the requirements associated with installing a subcooler?

Availability of mains water and a discharge point, an electrical connection, and a junction between the Alchemist coil and the refrigerant line.

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Is the subcooler a sustainable solution?

Certainly. The subcooler is an environmentally sustainable solution because it provides an efficiency "boost" with each installation (COP increase).

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Tools to help you choose

Cooling Advisors

First goal: ask the right questions to the customer and involve him selecting the best cooler. We have been doing this since 1960.

Preliminary plant evaluation

The visit to the plant is a fundamental moment to find the right information on your needs, together with your technicians and the engineering firms involved.

Tailor-made design

Complete range of coolers and chillers, dozens of variants for each type, solutions for each application and important customizations: MITA's design is truly tailor-made.