Beer fermentation tank cooling is generally directly by ammonia liquid cooled by evaporation through the solenoid valve before fermentation tank intermittent open to control the flow of liquid ammonia, with direct evaporation amount of latent heat of liquid ammonia not precisely controlled, too cold so often happen, which results in the fermentation tank fermented liquid icing, directly affect the quality of beer, in addition, the leakage of liquid ammonia will pollution to the liquid fermentation tank, affect the product quality and safety;
In order to satisfy the liquid ammonia evaporation low pressure environment, compressor need continuous running, which creates a waste of energy.
in the fermentation tank before install solenoid valve, solenoid valve according to temperature control of fermentation tank and off, the ethylene glycol solution using process variable frequency pump, cold water machine according to the temperature of the ethylene glycol solution tank start-stop can guarantee a jar of ethylene glycol.
Aqueous solution, constant temperature in ethylene glycol solution under the condition of constant temperature, to ensure that achieve precise temperature control of fermentation tank, you just need to regulate the flow of ethylene glycol aqueous solution, and to achieve flow adjustable design adopts the variable frequency pump.
For ethylene glycol aqueous solution of temperature and heat transfer process of the fermentation tank is just pass, does not occur, so there is no latent heat caused by the influence of heat transfer is not controlled.
In addition, as long as there is enough glycol tank of ethylene glycol at low temperature.
Aqueous solution, even the cold water machine is not open, also can realize to the fermentation tank, cooling industrial ice machine
intermittent operation, so that at the same time also can prolong the service life of cold water machine.
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