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    Precautions for energy saving in cold storage operation

    Precautions for energy saving in cold storage operation 1)In the operation of the cold storage, on the premise of ensuring the temperature of the cold storage, the highest evaporation temperature should be used as much as possible. According to the literature, when the evaporation temperature is reduced from -5 ° C to -30 ° C, under the same cooling capacity, the energy consumption will increase more than 1 times. It is also pointed out that for every 1 ° C increase in the evaporation temperature of a refrigeration device, energy savings are 2% to 3%. It can be seen that the change of the evaporation temperature has a great influence on the energy consumption of the refrigeration device, so the evaporation temperature should be avoided as low as possible. (2) Reasonably determine the condensation temperature. Since the condensing temperature corresponds to the condensing pressure, the condensing temperature increases, and the condensing pressure also increases, which will increase the discharge pressure of the refrigeration compressor and increase the compression ratio. This will reduce the compressor's air transmission coefficient, increase power consumption, and reduce economic efficiency. On the other hand, increasing the compression ratio will increase the compressor discharge temperature, increase the compressor failure rate, and reduce the safety and reliability of operation. Therefore, the refrigeration unit should be operated at a lower condensation temperature as much as possible. In order to achieve the operation of the refrigeration device at a lower condensation temperature, it is important to arrange the refrigeration device to operate at night. Because the ambient wet bulb temperature at night is low, whether it is a variety of water-cooled or air-cooled condensers, will reduce the condensation temperature. This will increase the cooling capacity of the refrigeration device, reduce energy consumption, and achieve energy-saving effects. It should be noted that in the design of the cold storage refrigeration process, an appropriate condensation temperature should be selected. If a lower condensation temperature is selected in the design, it may cause a higher condensation temperature in actual operation. Because the design is based on a lower condensation temperature, due to the smaller condensation load, the heat transfer area of ​​the selected condenser is smaller. When the condensing temperature is higher than the design value during operation, the actual condensing load will increase, and the condenser selected according to the lower condensing temperature will not meet the needs. The actual condensing temperature will increase, the energy consumption will increase, and the efficiency of the cooling device will decrease. 2)Refrigeration equipment is arranged to operate at night, which not only reduces the energy consumption per unit of cooling capacity, has direct energy-saving benefits, but also has the social benefits of "peak shifting and valley filling" for the regional power grid. At present, peak-valley electricity price differences are being implemented everywhere, and cold storage can enjoy lower electricity prices during night operation. Therefore, for the owner of the cold storage, the realization of the refrigeration device at night will obtain significant economic benefits 3)(3) Reasonably choose the ventilation time of the refrigerator. For some refrigerators that require ventilation and ventilation, the load caused by ventilation and ventilation is relatively large, because the temperature and humidity difference between the inside and outside of the refrigerator is large, and the effect of indoor and outdoor heat and moisture exchange on the load of the refrigerator is also large. If it is arranged between 5:00 and 6:00 in the morning, the temperature and humidity of the ambient air are relatively low, and the air is relatively fresh, and the heat and humidity load caused by ventilation is relatively small. Some high-temperature cold storage operation experience has proved this point. 4)The energy saving of cold storage includes all links, and its operation management is also one of the keys. Poorly managed refrigerators may result in energy consumption 2 to 3 times higher than energy-saving refrigerators. Therefore, in order to improve the comprehensive benefits of the owner of the refrigerator, the owner of the refrigerator should also have a full understanding.

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    Precautions for energy saving in cold storage operation

    06/14/2020

    Precautions for energy saving in cold storage operation

    Precautions for energy saving in cold storage operation 1)In the operation of the cold storage, on the premise of ensuring the temperature of the cold storage, the highest evaporation temperature should be used as much as possible. According to the liter器2䀀ￜ皥䖒皦즠Ʋ焬क़㲈Ʋ䌁皦ᮔDž༬皧然क़Ѐ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧׼識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

    Refrigerating oil replacement operation method

    06/14/2020

    Refrigerating oil replacement operation method

    Refrigerating oil replacement operation method One. Replacing the freezing oil without internal cleaning: The compressor performs the pumping action, recovers the system refrigerant to the condenser side (note that the minimum suction pressure of the 器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧Ӗ識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

    Refrigeration compressor maintenance guide

    06/14/2020

    Refrigeration compressor maintenance guide

    Refrigeration compressor maintenance guide The refrigeration compressor is the core and heart of the refrigeration system. The capacity and characteristics of the compressor lead to the capacity and characteristics of the refrigeration system. So how to 器2䀀ￜ皥䖒皦즠Ʋ焬क़㲈Ʋ䌁皦ᮔDž༬皧然क़Ѐ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵

    The reasons for the high temperature of the compressor discharge are

    06/14/2020

    The reasons for the high temperature of the compressor discharge are

    The reasons for the high temperature of the compressor discharge are (1) The clearance in the compressor cylinder is too large; (2) The suction and exhaust valves and piston ring of the compressor are damaged; (3) The compressor safety bypass valve器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥

    Screw compressor overhaul

    06/14/2020

    Screw compressor overhaul

    Screw compressor overhaul Screw compressor overhaul, normal working condition of refrigeration system in operation: 1. The suction temperature of the compressor should be 5-15 ℃ higher than the evaporation temperature; 2. The discharge temperature 器2䀀ￜ皥䖒皦즠Ʋ焬क़㲈Ʋ䌁皦ᮔDž༬皧然क़Ѐ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱

    Refrigerating oil replacement and internal cleaning

    06/14/2020

    Refrigerating oil replacement and internal cleaning

    Refrigerating oil replacement and internal cleaning The operation of draining oil is as described above. After the freezing oil is removed and the pressure inside and outside the compressor is balanced, use an allen wrench to loosen the flange bolts and 器2䀀ￜ皥䖒皦즠Ʋ奌ི㲈Ʋ䌁皦ᮔDž༬皧奖ིЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵ᴴᏩ呄ᠾ퍘ᒥ鹨់ᩄꋔྦ瑉浥巠皱㙲皦抐皱巠皱੨皦柘皱ￜ皥ب巠皱㙲皦忈皱੨皦柘皱즠Ʋǜ勁皦즠ƲبǜV /펔B䌁皦 ᮔDž'鱤džၜ먢䇨珵呈ᠾ뤂ᐱ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲᠾ랖僧٢識�僬㣢ᐲ臆S㥲ᐲᬄğ識理艏S杴 識杴 㥲ᐲ

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