95% water savings - Cooling tower 100
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Standard price : 29500.00€
- Ex Tax: 29500.00€
- Disponibilité : On request
TECHNICAL SPECIFICATIONS
Single-phase power supply: 230V/50Hz/1Ph
Dimensions (Width Depth Height): 450-950-1850 mm H(diam): 300
Customs code: 8419.8910
A GREEN COOLING TOWER
Not wasting water means not depleting water resources and saving significantly on operating costs.
This evaporation tower saves 95% of the mains water that goes to waste; by transforming the open cooling circuit of ice machines into a closed circuit, it reuses and saves thousands of cubic metres of water. It cools water using a physical, and therefore entirely natural, principle, without the need for refrigerant gases or compressors.
The tower is characterized by very low electrical energy consumption.
OPERATING PRINCIPLE
Thanks to the development of a technology that has been used and reinforced for decades in the industrial sector, the towers make simplicity of construction and high efficiency their points of strength. The cooling effect is achieved by spraying hot water over a large heat exchange surface and blowing air in counter-current with a fan. The air, which absorbs the water's moisture, causes partial evaporation (less than 3% of the total), thus subtracting energy. The resulting effect is to lower the temperature of the remaining water, which is collected in an internal tank. A pump with a variable number of revolutions returns the cooled water to the circuit and thus to the production machines and display cases. What's more, since the evaporation principle depends not only on the temperature of the air used for cooling, but also on its capacity to absorb the water in vapour form, the tower can be installed both inside and outside the plant, even in sunshine and high temperatures, maintaining very high efficiency in all circumstances.
SIZES AND SIZING CHARACTERISTICSThe cooling towers are designed to serve all the machines usually found in a traditional ice-cream parlour, enabling the cooling circuit of all water-cooled appliances. They are available in 2 different sizes, depending on the thermal capacity and, therefore, the number of machines that can be cooled.
TECHNICAL FEATURES
The cooling towers are designed to serve all the machines usually found in a traditional ice-cream parlour, enabling the cooling circuit of all water-cooled appliances. They are available in 2 different sizes, depending on the thermal capacity and, therefore, the number of machines that can be cooled.
Control and regulation: The frame-integrated touchscreen provides immediate access to all machine functions. On-board sensors autonomously monitor operating parameters and constantly regulate to maintain optimum plant efficiency.
- Structure: The entire machine is made of corrosion-resistant materials. The fiberglass shell contains the weight of the machine, guaranteeing very high resistance to external agents and weather conditions.
- Heat exchange: PVC panels are structured to provide a large heat exchange surface in contained volumes. They are resistant to high temperatures and guarantee maximum performance.
- Fan: Centrifugal with direct coupling and electronic control as standard; the integrated inverter modulates speed according to thermal load, keeping consumption and noise emissions to a minimum.
- Pump: Double-stage centrifugal pump with corrosion-resistant stainless steel impeller. It is controlled by an inverter with a retroactive system via a pressure transducer, to guarantee the machine's optimum working point in all situations.
- Bypass: The solenoid valve, controlled by a temperature sensor in the tank, allows the water in the circuit to be lowered abruptly, through the forced injection of cold water from the external network when necessary. The same valve performs proportional purging of the recycled water, maintaining keeping limescale levels low.
- Filters: The filter on the fan intake limits the suction of impurities and food dust should the machine be installed inside the laboratory.
- Communication: The integrated control system communicates to the operator when to carry out checks and maintenance, and enables rapid contact with the service offered.
- Inspection and maintenance: manholes mounted on the fiberglass shell allow immediate and simple access to all internal parts of the machine, enabling inspection, cleaning and maintenance to be carried out with ease.
INTERNAL AND EXTERNAL INSTALLATION
The cooling tower can be installed both inside and outside the plant. The heat extracted from the machines is expelled by simple low-temperature steam, without polluting the environment and without the need for external splits. Installation inside the plant can be carried out simply by channelling the machine outwards with a sheet metal tube, to allow saturated air to escape at the outlet.
Alternatively, the installation can be carried out directly outside the laboratory, leaving the tower in the open air and positioning it in a courtyard, esplanade or on the roof. In this case, the only hole required is for the two main return manifolds between the tower and the laboratory machinery. The fiberglass shell protects the machine from the elements, guaranteeing unrivalled longevity. What's more, exposure to sunlight has no negative impact on the tower, which maintains its high performance.
SIZING CRITERIA
The heat to be dissipated and the choice of machine
Calculating the thermal power to be dissipated in an artisanal ice laboratory, measured in kcal/h, is essential to accurately determine the most suitable evaporating tower model. This calculation can be made in two different ways, depending on the technical data available and the machines installed.
Method 1: calculation based on installed kW
On machine data sheets, we note the power in kW. This gives the thermal equivalent to be dissipated. The result is used to identify the most appropriate tower size.
Example
1 ice machine 4.0 kW
1 pasteurizer 4.0 kW
1 vat 3.5 kW
1 display case 1.8 kW
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TOTAL 12.5 kW
In [kcal/h] 12.5 kW x 1,800 kcal/h/kW = 22,500 [kcal/h] -> Most suitable tower
Method 2: calculation based on mains water consumption
Knowing the hourly water consumption of the production machines, we obtain the effective reach required and the most appropriate tower "size" can be identified.
Example
1 ice machine 200 l/h
1 pasteurizer 500 l/h
1 tank 400 l/h
1 ref. cell 200 l/h
1 showcase 600 l/h
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TOTAL 1.900 l/h
In [kcal/h] 1,900 x 3 x 1.5 = 8,550 l/h -> 8,550 x 5°C = 42,750 [kcal/h] (*) -> Most suitable tower
(*) (*) Although the temperature of the water leaving the evaporation tower is higher than that obtained with chiller/freezer unit, the amount of heat removed from the cooling machines is lower, since the circulating water capacity is 3 times greater.
Notes on sizing
The rated power of the towers (25,000 and 45,000 kcal/h) refers to the following operating conditions:
T water inlet 34 - 35 °C
T water outlet 29 - 30 °C
T wet bulb 24 / 25 / 26 °C (North / Central / South)
For indoor installations, operating conditions are influenced by the following factors:
- Ventilation of the building (little ventilation = minor fan reach)
- Temperature and humidity in an enclosed space (higher wet bulb T = lower rendering)
- Exhaust air duct length (major pressure drop = smaller fan air throw)
HYDRAULIC SYSTEM
MINIMUM DIAMETER REQUIRED: The minimum diameters indicated are those of the main collectors (flow/return). return). The "connections" of the main pipes to the machines must be as short as possible, with Ø ¾" (internal diameter) and made of metal braid (NOT rubber or "washing machine type" woven material). internal diameter) and made of metal braid (NOT rubber or "washing machine type" woven material).
SAFETY AND BY-PASS SYSTEM: the two situations allow you to operate with the tower in operation or, if necessary, to exclude the tower and continue to work with lossy water drawn from the public network.
NORMAL SITUATION:
valves V1 and V2 --> open
valves V3 and V4 --> closed
EMERGENCY:
valves V1 and V2 --> closed
valves V3 and V4 --> open
PURGE SYSTEM: periodic water purging is carried out automatically through the overflow channel. The water expelled is automatically counted and corresponds to the quantity needed to keep the scale in the machine as low as possible.
Instructions: on request
Exploded view: on request