fred perry pas cher United States and Canada cold

United States and Canada cold storage design of energy-saving technologies

Number of units l2530I3} 7 device wrapped 14213 Screw compressor followed by the main features of the United States and Canada, cold storage refrigeration equipment has a single level of less piston compressor. L3 can be seen from the table, only in Taichung 226, Taiwan 3O. In the field visits. Found that many older plants still use rotary vane compressor as a low level in the new plants use the screw-type compressors. Third, the screw compressor versatile, advanced performance. L4 can be seen from the table,[link widoczny dla zalogowanych], in the 213 screw compressors with economizer accounted for 1 / 3,[link widoczny dla zalogowanych], with a variable inner volume accounted for 2 / 3, with a shake processors accounted for 87%. Some have adopted the screw compressor frequency control. These data suggest that, screw-type compressor has developed into a versatile,[link widoczny dla zalogowanych], performance, 45 * In cold storage has become a surprising choice of main model is the rapid development of single screw compressors. In the 213 screw compressors, single screw compressors to field units, accounting for about 1,3. This is a refrigeration compressor worthy of our attention to the movement of manufacturing and users. The survey found that 226 units in the piston compressor, 56% used a belt drive. The belt drive compressor direct-drive compressor more than obvious,[link widoczny dla zalogowanych], belt drive belt not only increase costs, increased fork adjustable elastic belt workload. Even if well maintained, there is inevitably the belt transmission energy loss. Direct undoubtedly drive more energy-efficient, more reasonable. The strange thing is there are still a lot of the U.S. market is the piston compressor drive belt. Investigation and the United States in the field of cold storage engineers, they believe caused the traditional habits. 2. Select type of condenser cooling device is suspected compression refrigeration is one of the four components, the performance is directly related to the operation of the energy consumption. The survey found that the United States and Canada Ling library evaporative condenser refrigeration equipment in the majority, see Table 15. Vertical and horizontal shell and tube condenser with eight plants use little air-cooled condenser. It is worth mentioning that the eight plants, five plants in the refrigerant is ammonia. L5 wrapped the type condensation din (62 plants) l Vertical Horizontal l2358l evaporative air-ling is the number of factory-style plate I plant efficiency 81} Note: Some factory uses two condensers both evaporative condenser cooling tower function, with no additional cooling tower. Because it relies on the evaporation of water to absorb the refrigerant condensing heat Ling, cooling water flow is much less than shell and tube condenser.Cold storage in the habit of using shell and tube condenser water temperature is elevated significantly by the heat of condensation heat away. Basically, the current use of recycled water, cooling tower need to be configured so that the cooling tower to increase the investment, maintenance and management as an area of shell and tube condenser cooling water flow rate, cooling water system pump was too on the evaporative power condenser. Domestic use in the evaporative condenser are some problems. For example, control group severe scaling, nozzle blockage often affected the promotion of use of evaporative condensers. Survey from the U.S. situation, the cold storage in the evaporative condenser in the majority. Clearly these issues in the United States has been well-ling library solution, the experience is worth in-depth analysis. In order to achieve energy-saving operation on the evaporative condenser design and the selection should cause the user's attention. V. Conclusion 62 of the United States and Canada, public-ling library survey and field visits, the United States and Canada, the design of cold storage, there are many energy-saving technology available to learn from China's refrigeration industry. Reference to China's national conditions, in the cold storage building, refrigeration and cooling equipment selection system design in three areas, there are many energy-saving refrigeration workers of technological developments worth further study. References L1] Zhang, JianyiandE. AGrollEnergyEfficiencySurveyandRecomrrendatJonsforPublicRefrig-eratedWaehouses. Researchreport, HL99-14-220. HeTickLabs,[link widoczny dla zalogowanych], PurdueUniversityOct. 1999-2] WilliamStoecker. IndustrialRefrigerationHand-book. McGraw-Hill, 1998 【3] Zhang a Beijing 1999

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