The energy consumption of energy-saving air curtain cabinets usually used for frozen food (including the energy consumption of pumps, fans, compressors and internal power equipment) will increase by 55%. Energy consumption will increase by 100%. Due to the influence of external environmental factors. Therefore ... if we insist on energy-saving air curtain cabinets, the temperature is the same in summer and winter. The test shows the temperature distribution in the energy-saving air curtain cabinet, so the core of studying the energy-saving air curtain cabinet is the flow characteristics and heat transfer mechanism of the cold air curtain. The air curtain airflow of closed energy-saving air curtain cabinet belongs to large space low temperature entrainment jet. The characteristics of air curtain are not only related to the structural size of energy-saving air curtain cabinet, the initial parameters of jet and the stacking shape of goods in energy-saving air curtain cabinet.
Interference from external environmental factors. The efficiency of air curtain in day and night can be evaluated by transmittance. The research shows that the air permeability of the air curtain in the energy-saving air curtain cabinet is the same in summer and winter, but the air temperature supplied to the air curtain is higher in summer. The enthalpy and dry bulb temperature of the air in the cabinet are very high. Energy-saving air curtain cabinets consume more energy in summer than in winter. The influence of climate conditions in summer on energy-saving air curtain cabinets is greater than that in winter. Compared with winter. Causes changes in indoor air conditions (temperature and humidity). As far as the compressor is concerned. The temperature in the cupboard is lower in winter than in summer. This increase in power consumption will be greater than mentioned above. Take a display case as an example. In winter and summer, the temperature difference between the upper and lower layers is 3.3℃ and 6.7℃ respectively. The average temperature difference in summer monsoon curtains is about 3~C higher than that in winter, and the average temperature in display cabinets is 2~C higher than that in winter. In summer, the air baking value in front of the display cabinet increased by 50%, indicating that the gas infiltration in summer is more serious. In order to keep the indoor temperature in summer consistent with that in winter, reducing the supply air temperature by at least 2~C means reducing the evaporation temperature. Assuming that the required power consumption will increase by 2.4% every time the evaporation temperature is lowered, the total power consumption will increase by about 5%. Therefore, whether from the temperature distribution or energy saving, seasonal changes have a great impact on display cabinets. Energy-saving air curtain cabinet is to use a relatively permeable air curtain to stop the infiltration of hot and humid air outside.
Air curtain cabinet, freezer, freezer, etc. It has always been a "big power consumer" in household appliances. So what methods should we use to reduce electricity consumption?
1. If there are not many items stored, you can put a slightly larger beverage bottle with salt water in the freezer and fresh-keeping cabinet, which can balance the temperature difference in the cabinet, reduce the number of start-stop times of the compressor and prolong the service life of the compressor.
2. The condenser of the freezer is generally under the steel plate of the cabinet, so the freezer should be placed in a well-ventilated place and the dust outside the freezer should be wiped off in time, which can improve the condensation effect of the condenser, achieve the purpose of improving the refrigeration effect and saving electricity. After long-term use of the refrigerator and fresh-keeping cabinet, the inner container of the refrigerator is easy to frost, so it is necessary to defrost the refrigerator frequently (about seven days) to improve the refrigeration effect.
3. If the condenser of the freezer has fins, it should be cleaned with a brush every other month or so to improve the heat dissipation effect.
4. If the freezer is open, avoid direct blowing of electric fans and air conditioners. Night curtains should be drawn during non-business hours.
The above is an introduction to the node method of air curtain cabinet. I hope our introduction can bring you more understanding!