Highest possible capacity, at the lowest possible temperature
Freezertech High Capacity
Under-sized Suction Valves
Leads to increased pressure drop in the lines = higher temperature in the plates
Correctly sized Valves & Hoses
Lowest possible pressure drop in suction line, especially important at cycle start where the capacity is highest
Too much refrigerant overfeed
Leads to increased pressure drop in the lines = higher temperature in the plates. Any excess liquid must be lifted back to the receiver and this costs energy
Lower Overfeed Rates
Carefully calculated to prevent excess refrigerant feed and maintain fastest possible freezing times.
Pressure relief defrost control
Low capacity = longer defrost times, and higher heat input into the product. Works on pressure only, so can waste hot gas = wasted energy & money
Soft spots (defrosted edges) affect product value and enable damage during handling
High Capacity Defrost
Shortest possible defrost times, with maximum pressure differential. Increased production & lower heat input into the product = higher product value. Correct draining ensures no wasted hot gas & higher plant efficiency.
Since the blocks edges are frozen solid upon ejection, handling damage is less likely to occur.
Raising condensing pressure during defrost
To try and make up for under sized lines = wasted energy & higher heat input into the product.
Lowers condensing pressure during defrost
Saves energy whilst defrosting through a lower condensing pressure (approx 1% saving for every 1 °C)
Liquid Hammer from incorrect piping
Can damage / destroy valves & hoses. Can extend defrost times
No liquid hammer
“Soft Start” defrost and draining allows for a high capacity, without any risk of damage from liquid hammer.
Visual Inspection Only
Leads to over freezing & over defrosting. Wastes energy and can damage product. Not defrosting properly can damage lifting arms & plates
Temperature sensors ensure a defrost is carried out properly before allowing hydraulic operation. Sensors are available to monitor the temperature of the product throughout the cycle also.