Excessive air or refrigerant oil in the evaporator can reduce its heat transfer efficiency. Once a significant amount of refrigerant oil accumulates on the inner and outer surfaces of the heat transfer tubes, the heat transfer coefficient decreases. Similarly, if there is too much air in the heat transfer tubes, the evaporator's heat transfer area diminishes, significantly lowering its heat transfer power, and consequently, the rate of temperature decrease slows down. Therefore, during routine operation and maintenance, it is crucial to promptly remove oil污 from the inner and outer surfaces of the evaporator's heat transfer tubes and expel air from within the evaporator to enhance its heat transfer power.

Improper adjustment or blockage of the throttle valve can lead to excessive or insufficient refrigerant flow. This can directly affect the refrigerant flow entering the evaporator. When the throttle valve is overly open, the refrigerant flow is excessive, causing the evaporator pressure and temperature to rise, slowing down the rate of temperature drop. Conversely, when the throttle valve is under-opened or blocked, the refrigerant flow decreases, reducing the system's cooling capacity and slowing down the rate at which the warehouse temperature drops.

Selecting the right Fujian refrigeration equipment products and manufacturers is crucial. Xin San Yang Industrial Co., Ltd. specializes in providing comprehensive refrigeration solutions for supermarkets, hotels, KTVs, and more, offering quality refrigerators, freezers, convenience store refrigerators, supermarket refrigerators, convenience store freezers, coolers, and coolers. Since its establishment, the company has taken it upon itself to build a national brand, committed to delivering excellent products, good reputation, and sincere service to society. It has gained recognition and trust from a wide range of customers.