Dimensions: 47 in. (w) x 31 ¼ in. (h) x 22 ½ in. (d)

Weight: 475 lbs.

Materials: 316 Stainless Steel, copper, brass/bronze and other corrosion resistant materials as applicable.

Components: The highest quality and performance components available backed by the best warranty and after sales service.  Whenever possible, we selected off-the-shelf readily available components for our units for ease of maintenance.

Fluids bulkhead port dimensions:

1)   Hydraulic: 1 in. NPT

2)   Unit cooling seawater: 1 in. NPT

3)   Cooled tub water: 1 1/2 in. NPT

Hydraulic power requirements:

1)   20 to 22 GPM @ 1100 to 1400 PSI

These figures will vary slightly depending on the load placed on the unit.

Electrical power requirements: 8 to 10 amps@12 to 14 VDC

Operating speed: 1400 RPM (maximum)

                             1200 RPM (minimum)

Water pumps specifications:

Unit cooling pump: 18 GPM @ 1400 RPM

Cooled water pump: 40 GPM @ 1400 RPM

·       Both pumps are self priming up to approximately 8 feet above source.

·       Flow rates and HP requirements will vary depending on head pressures, loads and other variables.

Cooling capacities

MODEL A75HVC

 *TC: Temperature of condensation (seawater temperature). We calculate the maximum average surface seawater temperature to be 86 Degrees F. If the seawater surface temperature is below 86 degrees F., the cooling capacity of your NACC unit will increase accordingly.

 **ET: Evaporation temperature. This is equal to the cooled product holding tub water less a 10 to 15 degree F. differential. (If the ET is 20 Degrees F., then tub water will be between 30 and 35 degrees F.)

 Cooling 

As a rule of thumb, 1 BTU can cool 1 pound of water 1 degree F. in one hour.

ie. 10000 BTU are needed to cool 10000 lbs of water 1 degree F. in one hour

OR 10000 BTU are needed to cool 1000 lbs of water 10 degrees F. in one hour.

CapacitY RATINGS

Refrigeration capacity is commonly referred to as Tons of refrigeration based on a period of 24 hours of time.

1 ton of Refrigeration is the amount of heat (or cooling) required to melt one ton of ice or to freeze one ton of water. If we use tons of refrigeration as a measurement of the capacity of a system, it must be time referenced, normally to an hourly rating.

1 Ton of Refrigeration      =      288,000 BTU’s   or     72,528 Kilocalories

This is the amount of energy (in BTU, Kilocalories, etc.)  required to melt one ton of ice or freeze one ton of water (based on a 24 hour period).

Therefore    288,000 BTU’s divided by 24 (number of hour in a day) = 12,000 BTU’s / hr

and; 72,528 kcal  divided by   24   =   3,022 kcal / hr

Therefore the capacity rating for refrigeration or heating systems is;

1 Ton               =          12,000 BTU / hr

                        =          3,022 kcal / hr

The capacity can also be rated in Watts or kilowatts.

1 Ton    =    3,517 watts or 3.517 kilowatts

Table: Refrigerating Capacities – Cross Reference Chart