Ecodry Comparison Charts

www.frigel.com

Comparison with

Cooling Tower

Page 2 of 4 | Ecodry Comparison Chart Comparison with Cooling Tower

Comparison with Cooling Tower

Ecodry System v. Cooling Tower Circuit

Cooling Tower Circuit

Ecodry System

Open System

Max Temperature: 28/30C (82/86F)

for both Oil and Molds

Method of Heat Rejection:

Water Evaporation

Close System (Ecodry + Microgel + Turbogel)

Main Circuit Temp: 32/35C (90/95F)

Point-to-Point Process Cooling Units

One or Two Flexible and Precise Temperatures

to each Mold from -5 to 90C (25 to 195 F)

and one or two customized pumps

for each mold

Method of Heat Rejection:

Dry Air Convection for Main Circuit and

Compressor for Molds (when required)

Page 3 of 4 | Ecodry Comparison Chart Comparison with Cooling Tower

Comparison with Cooling Tower

Cooling Tower Disadvantages

Water Quality

Poor Quality of Water to Process

Permanent Contamination

Solids, Gases, Algae

High risk of Bacterial contamination (i.e.

Legionella)

Scale Accumulation

Permanent Oxidation

Reduced Heat transfer Efficiency and

Performance due to Fouling and scaling

Winter Icing

Productivity

Lack of flexibility and precision in temperature

control.

Impossible to cool the water below Wet Bulb

Temperature

Variable water flow to molds, highly affected by

the other users.

Contamination and Scale Accumulation inside

Molds Cooling Channels and TCUs (when

used), provoking clogging and reduced heat

transfer efficiency with frequent need of

mechanical scale removal.

Frequent downtimes

Higher cooling Cycle Times due to High and

Variable delta T on molds and reduced heat

transfer efficiency.

Ecodry System Advantages

Water Quality

Excellent quality of water, almost

maintenance-free.

No scale accumulation on heat-exchangers

and circuits constant efficiency

No chemicals consumption and/or disposal.

No risks of bacterial infections or

contamination

Available in Self Draining configuration,

that can work in ANY climate with no use of

Glycol

Productivity

Possibility of searching and repeating the

optimum cooling conditions for each mold.

Complete independence of setting.

Precise automatic control of the mold

temperature.

Cooling conditions (temperature AND flow)

permanently stable and under control for

each mold.

High cooling efficiency with low delta T of

the process fluid through the

mold with Lower Cycle Times

A much higher quality of molded parts. Less

scraps.

Communication interfaces available with

process machines.

Page 4 of 4 | Ecodry Comparison Chart Comparison with Cooling Tower

Comparison with Cooling Tower

Running costs

Continuous Water Consumption

Increasing Costs for Water

Ongoing Water Treatment and

Chemical Consumption & Disposal

Increasingly Stricter Laws and Regulations

Periodic Heat Exchanger Maintenance

High risk of damages due to corrosion,

oxidation and frequent mechanical scale

removal

High water pressure drops across the main

water pipe-work.

Installation

Complicated and costly Initial Installation for

centralized pump-tank groups

Complicated and costly Expansions

Running costs

Negligible Water Consumption

No Chemicals Consumption & Disposal

No Maintenance (Higher Uptime)

Clean and safe molds, thanks to the use of

clean closed circuit water

Low Pressure Drops across the main water

pipeworks

High and constant Flow through the molds

often allows higher fluid

temperature, reducing the risk of mold

sweating and reducing energy consumption

Free-Cooling Opportunities as a standard

feature

Lower Energy Consumption

Installation

Simple, quick and inexpensive

installation. No need for intricate central

pumping groups.

No need for main pipeworks insulation

Modular concept Easy to expand