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Technical Information

Technical Information

Technical Information

IceGen slurry ice generators

IceGen Inc. equipment will deliver from 2 to 120 tons of ice per day from a single generator. When more ice is required, multiple generators can be selected and connected to form a single, larger system. The capacity is based on the conversion of brine to the specified quantity of ice in solution in the form of slurry. In order to realize the full ice generating capacity of our IceGen models, we recommend that a pre-chiller be included in the system design to pre-cool the entering brine.

Also available

We can provide turnkey systems utilizing the refrigerant of your choice, including R-717 (ammonia). The system can be configured as an air cooled or water cooled package or as a split system with options such as evaporative or marine duty condensers. A full selection of semi hermetic reciprocating compressors or industrial open compressors is available.

We have strategic partnerships with a number of refrigeration system manufacturers with broad ranges of application and manufacturing capabilities who can design systems to meet specific project and customer requirements.

Accessories and ancillary equipment:

  1. Brine mixing stations
  2. Process and slurry storage tanks
  3. Slurry pumps
  4. Slurry tank agitation systems
  5. Pre chillers, stand alone and tandem
  6. System control packages
  7. Centrifugal separators
  8. Gravity separators
  9. Ice harvesters
  10. Flow control and remote monitoring

The icegen advantages:

  • Robust industrial construction, with single brine and refrigerant connections
  • Comes complete with sturdy welded frame and mounting pads
  • Compact design
  • Scalable capacities
  • Operates with a 15 degree temperature differential
  • Minimal maintenance
  • Easily serviced, without special tools
  • Minimal service clearances required
  • Constructed from 316L stainless steel
  • Single scrapper motor
  • Compatible with all current refrigerants
  • Operates with low brine concentrations (2.5% salt solution)
  • Works with a vast number of brine and concentrations
  • Small refrigerant volume

Definitions and useful performance information:

FREEZING POINT DEPRESSION - The difference between the freezing temperature of a brine and the freezing point of pure water.

SLURRY ICE - Slurry ice is a pump able fluid comprised of millions of minute ice crystals suspended within brine.

BRINE – A solution of a mixture of water and dissolved freezing point suppressant.

FREEZING POINT DEPRESSION - The temperature difference between the freezing temperature of a brine and the freezing point of pure water.

LATENT HEAT - The amount of energy required for the creation of ice crystals.

ICE FRACTION - Percent of ice crystals in the mixture.

Advantages of slurry ice:

RAPID COOLING:

  • Has superior energy transfer capabilities
  • Has a significantly greater heat absorption capacity (1 pound of 30% slurry ice can have up to forty five times the cooling capacity of water)
  • Completely surrounds the product without air pockets like other forms of ice
  • Product freshness is improved

BETTER QUALITY:

  • Eliminates weight loss due to dehydration
  • Prevents product damage during handling because of the soft and fluid nature of the crystals

EASY HANDLING:

  • Has the flow characteristics of a liquid
  • Can be pumped directly to the point of use
  • Significantly reduces handling costs

LOWER ENERGY COSTS:

  • Cools product rapidly with shorter dwell times
  • Cools with smaller temperature differentials, using less energy when compared to blast freezing

FLEXIBILE:

  • Can be produced from many different types of brine
  • Can be produced in a broad ice fraction range
  • Covers a wide range of temperatures and applications

Energy Storage Potential:

The amount of energy required to change the temperature of a substance:

Substance Amount Change Energy Required
Air 1 lb 1 F° 0.24 Btu
Water 1 lb 1 F° 1.0 Btu
30% Slurry Ice 1 lb 1 F° 45.0 Btu

Useful information

  • 1 gal. of water at 40°F= 8.33 lb.
  • To freeze 1 lb. of water at 32°F requires 144 Btu
  • Latent heat=mλ=lbs. of water x 144
  • Sensible heat=lbs. of water x ∆t (leaving – entering temperature)
  • 1 ton of ice per day=2000 lbs. /ton x 144 btu./lb.= 288,000 btu/day=288,000/24= 12,000 btu/hr. = 1 ton of refrigeration/hour

Typical brines and freezing point information:

Brines
Brine Concentration Freeze Point
Sea water 3.00% 27.5° F
Salt water (NaCl) 10.00% 20.2° F
Ethylene Glycol 10.00% 24.0° F
" 20.00% 14.0° F
" 30.00% 1.0° F
" 40.00% -13.0° F
Propylene Glycol 10.00% 27.5° F
" 20.00% 19.5° F
" 30.00% 7.5° F
" 40.00% -8.5° F
Ethanol 15.00% 19.5° F
Alcohol 15.00% 19.5° F

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Our Services

Our Services
Our Engineering team has been working with slurry ice for over 30 years and offers the experience and expertise to provide an application solution and a custom system design to meet specific requirements of the project. The refrigeration system ...
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Products

Products
Capacities are available from 2 to 120 tons of ice per day from a single Ice Generator. For greater capacity, multiple Ice Generators can be selected. The system capacity is based on the weight of ice crystals in slurry solution. For example, a 120 ton Ice Generator will produce 360 tons of slurry with 33% ice fraction.
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