The thermal calculation of a cooling tower has two purposes. Firstly, given the water and heat loads, the required area of the cooling tower can be determined based on the cooling requirements under specific meteorological conditions; The second is to know the various conditions of the cooling tower and calculate the cooled water temperature under specific water load, heat load, and meteorological conditions. When selecting a complete set of cooling towers for engineering design, it is necessary to verify whether the water temperature after cooling can meet the requirements based on the filling height, volume, air volume, and known conditions of the cooling tower.
There are many methods for calculating cooling towers. In practical applications, some methods may have higher accuracy
High, but computationally complex, generally not adopted. The calculation of mechanical ventilation cooling towers using the Peng Jun enthalpy difference method or graphical method is more common. When using a mechanical ventilation cooling tower directly in a refrigeration unit, calculations can be made based on the calculation chart in the product sample.
The function of a cold storage room is to establish a low-temperature environment that allows for the storage of perishable products,
To maintain the original quality of food to the maximum extent possible. So it is necessary to remove all the heat inside and outside the warehouse that affects the temperature of the warehouse to ensure its stability. To ensure this condition, it is necessary to have corresponding refrigeration equipment, which should generate a cooling capacity that matches the size of the inside and outside of the warehouse that causes temperature fluctuations. Based on this, refrigeration compressors and auxiliary equipment should be selected accordingly.
The cooling load of a cold storage room is not constant throughout the year, and its size is influenced by various factors such as outdoor temperature, requirements for food cooling and processing technology, the quantity of cold processed products, and operational management methods. Therefore, in general, the maximum cooling load of each cold room is calculated first, and then when determining the cooling equipment load of the warehouse, the cooling load of some cold rooms is corrected by multiplying it by different coefficients according to different situations.
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