Snowmaking System with Pre-Cooling for Marginal Temperature Efficiency
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Solution Overview
Problem
Existing snowmaking systems face challenges in producing high-quality snow at marginal temperatures, particularly when air temperatures are close to 0°C, due to the need for efficient water cooling and the risk of nucleation nuclei dissolving in warmer snowmaking water, leading to inefficient snow production and energy consumption.
Innovation Solution
A snowmaking system that combines a snowmaking assembly with a chiller to cool the snowmaking water to a temperature of around 0°C or lower before ejection, ensuring efficient nucleation and reducing heat dissipation, thereby improving snow formation efficiency even at temperatures slightly above 0°C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If snowmaking water is cooled using evaporative cooling towers, then cooling capacity is improved, but at marginal temperatures (close to 0°C) the water temperature remains too high for efficient snow formation
Solution Approach 1:
The invention applies preliminary cooling action by pre-cooling the snowmaking water to near-freezing temperatures before it reaches the nozzles. The cooling system is designed to cool water in advance through insulated pipelines and cooling sections, ensuring the water is at optimal temperature (close to 0°C) when it exits the nozzle, thereby enabling efficient snow formation even at marginal air temperatures.
Solution Approach 2:
The invention changes the temperature parameter of the snowmaking water from typical cooling tower output temperatures (a few degrees above 0°C) to near-freezing temperatures (close to 0°C). This parameter change is achieved through extended cooling sections and insulated pipelines that maintain and optimize the water temperature throughout the system, directly improving snow formation efficiency at marginal temperatures.
2Reliability
If water temperature is reduced to improve snow formation, then nucleation efficiency is improved, but energy consumption increases
Solution Approach 1:
The invention applies self-service cooling by utilizing the ambient air temperature itself as the cooling medium. When air temperatures are at or below 0°C, the system allows snowmaking water to cool naturally through insulated pipelines and cooling sections exposed to the cold ambient air, eliminating the need for additional active cooling equipment and reducing energy consumption while maintaining reliable nucleation efficiency.
Solution Approach 2:
The invention extracts the cooling function from active mechanical cooling systems and replaces it with passive cooling using ambient air. By removing the need for energy-intensive cooling towers or refrigeration systems and instead using the naturally cold ambient air to cool the water through insulated pipelines, the system achieves reliable nucleation efficiency with minimal energy input.
3Temperature
If active cooling systems are used to cool snowmaking water, then water temperature control is improved, but system complexity increases
Solution Approach 1:
The invention extracts the active cooling components (cooling towers, refrigeration systems, complex control mechanisms) from the snowmaking system and replaces them with passive cooling infrastructure. The temperature control is achieved through simple insulated pipelines and cooling sections that utilize ambient air, dramatically reducing system complexity while maintaining effective temperature control for reliable snow formation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables efficient production of high-quality snow at marginal temperatures, with the snowmaking water typically exiting the nozzle at a temperature of 4.0°C or lower, reducing energy consumption and preventing nucleation nuclei dissolution, thus enhancing snow production across various weather conditions.
Implementation Method 1
the snowmaking water being cooled by means of a chiller of a snowmaking system
Implementation Method 2
After exiting the nozzle, the finely sprayed water in the ambient air quickly cools down to freezing point (approx. 0 °C) and freezes
Implementation Method 3
The heat released in this process is at least partially dissipated by evaporative cooling
Implementation Method 4
The heat released in this process is at least partially dissipated by evaporative cooling, with part of the water emerging from the nozzle evaporating
Implementation Method 5
nucleation nuclei, which are usually formed by rapidly supercooling water with the help of expanding air at the water/air nozzles
Data Source
Figure 1~3
Figure 4
Figure 5~6
AI summary
A snow-making system (10) has a snow creation assembly (12) and a refrigerating machine (14). The snow creation assembly (12) is configured to receive snow-making water (B, K) and has one or more nozzles (20.x) for ejecting the snow-making water (B, K) and/or a mixture of air and the snow-making water (B, K). The refrigerating machine (14) has at least one cooling circuit (22) which contains a refrigerant (M) that is separate from the snow-making water (B, K), the refrigerating machine (14) being configured to cool the snow-making water (B, K) before same is supplied to the snow creation assembly (12). A snow-making method has corresponding features. A fan duct (52) for a fan-type snow-making machine has a heat exchanger (24).