| With the rapid development of global cooling technology, people become more and more concern about the survivle earth for the generations to come. For a little less environmental pollution,and the better air quality,each country have begun to actively take all kinds of favorable measures. In this respect, energy problems are extermely important and specially urgent, For the moment, if you want to completely solve the energy problem, energy saving is worthy to pay attention, because it is more effectively and more directly in comparison to find new sources of energy.Can be seen,energy problem has become increasingly urgent practical topic.Today, people to the energy-saving refrigerator has carried on a thorough research. How ever, there are many problems need to be further discussed.Cold storage of energy saving, and reasonable choice of design parameters, reasonable heat exchange equipment has a lot to do. This paper,through theoretical research and contrastive analysis has carried on a optimal transformation and energy-saving reserach for the ice cream processing factory and logistics cold which are seated in Hui Autonomous prefecture Linxia.On basis of a lot of literature home and abroad,according to the requirement of practice production,paper has carried on a modification to the cold from the point of refrigeratory design.The main contents of this paper are as follows:Combined with the actual weather conditions,it is to be made appropriate adjustments for condensing temperature of refrigerating system and evaporating temperature of chilling water system and chilling room and for the system is equipped with frequency converter set.Using the computationed Fluid Dynamics software to make simulation about the cooling fan on the length and width direction of the outbound assignments section. Fan exit velocity in certain circumstances,by analyzing the change of the temperature field and velocity field,to get the optimal placement of the fan.Using the numerical simulation to simulate the velocity and temperature field of the single root respectively 2 fin top row finned tube and 3 top row tube.Build model for the cooling room when adopting respectively 2 top row tube and 3 top row tube, use CFD to simulate the distribution of airflow organization of cooling room to get the velocity field and temperature field distribution, and compared the distribution of velocity and temperature.It is concluded that which model have more advantages on cooling in the same of space. It is establishing waste heat recovery unit to the refrigeration system, for recycling condensation heat that released by refrigerating system, to further purpose of energy saving,make the cold storage save more enegy at the time of meeting the demand.Through the contrast research to the following conclusion:(1)After the appropriate adjust part of the design parameters of cooling system and equip ping it with frequency conversion unit, refrigeration system energy saving 96 KWh per year.(2)Air cooler place different will lead to the distribution of airflow organization, through the distribution of velocity and temperature contours can be seen in the outbound assignments section of the refrigerator fan on the length direction distribution has the advantages on the w(3)idth direction.(4)Through comparison and analysis in the top line of the low temperature of the cold sto rage which should select two finned tube will be more conducive to energy conservation.(5)System after adding waste heat recovery unit can save 1170 tons of standard coal each year.Research in this paper, the design of cold storage, the choice of the evaporator and the co olingfan arrangement and waste heat utilization has practical reference value. |
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