The ammonia system adopts full liquid type evaporator which is spiral pipe.The kind of evaporator method is High Efficience and Enegy-saving.
There are 5 performances:
A, evaporator refrigerant distribution is more uniform temperature field optimization higher heat transfer efficiency.
B, flooded evaporator, significantly increased the evaporation temperature of the unit, to improve the heat transfer efficiency of the unit.
C, with the high performance and high reliability with special screw compressors, greatly enhance the cooling capacity and energy efficiency of the unit.
D, thermal recycling of waste heat generated by the refrigeration system to take water, higher energy efficiency, reduce energy consumption and thermal pollution to the environment.
E, the high-efficiency heat recovery heat exchanger tubes, strong corrosion resistance, to ensure domestic hot water clean.
However ,we ice block machine and other ice machine factory don't use the full liquid type evaporator ,though many other ice machine company use it .
Full liquid type evaporators are often associated with centrifugal compressors or screw compressors used in conjunction with medium and large ice machine, the system efficiency is good, higher manufacturing costs and technical difficulty. Refrigerant lines in tube evaporation can borrow high side or low side level controller (such as float valve) to regulate the flow of refrigerant evaporator required, the level of liquid is able to completely cover the evaporator drain tube is principle, boiling refrigerant heat transfer fluid can completely wetted surface, which can have a better heat transfer efficiency.
Flooded advantage of the evaporator:
Fully wetted heat transfer surface, to increase the efficiency of the evaporator, the low-pressure side pressure to improve the system.
Liquid refrigerant in the evaporator shell side boiling, pressure loss is small compared temperature uniformity; and due to the suction side of the nearly saturated gaseous vapor into the compressor, it can increase the compression efficiency and the mass flow rate of the compressor. Since the multi-compressor units can share an evaporator and condenser at part load can still effectively use the heat transfer area, it can have a high part load efficiency.
没有评论:
发表评论