冷库工程节能背景意义

冷库食品冷冻加工、贮存与流通的重要设施，国民经济中占有重要地位。能源是国家经济建设的基本条件之一，节约能源是国家经济建设的久远战略方针。作为耗电大户的冷库，临时国营企业的体制下，存在大量不重视能源管理与浪费能源的现象，随着能源市场与世界的接轨，特别是国加入世界贸易组织，任何企业必需与世界各国优秀的企业竞争市场，此时，企业产品的质量和利息将决定一个企业的生死存亡，能源在冷库产品利息中占有重要地位，搞好节能工作将对冷库企业的经济效益提高发挥重要作用。因此分析、研究冷库行业制冷系统耗电情况，探讨制冷系统操作运行中的节能措施与方法，对节约能源、降低冷库企业生产本钱，提高经济效益具有现实意义。

主要节能措施如下：

1.防止在一天当中比较热的时段开启制冷压缩机

2.减少换热器换热温差，提高制冷系统的效率，达到节能效果，但是这要增大换热器的面积。

3.控制合适的控制精度，从节能角度动身，只要不影响商品的品质，控制精度宜取低不取高，不必片面追求高精度控制。

4.减少不同蒸发温度冷间的并联运行，由于同一制冷的制冷压缩机只能在同一个蒸发温度下运行，所以不同温度的冷藏间如果并联运行，就会使相对蒸发温度较高的库房处于高耗能运行状态，该冷藏间热负荷越高其耗能就越高，应防止此情况的呈现。

5.调节制冷系统的有关参数，

6.实时计算控制，确保系统比较佳节能运行。

Background significance of energy saving in cold storage engineering

The important facilities for freezing, storage and circulation of refrigerated foods play an important role in the national economy. Energy is one of the basic conditions of national economic construction, and energy conservation is a long-standing strategic policy of national economic construction. As a cold storage for large consumers of electricity, under the system of temporary state-owned enterprises, there are a lot of phenomena that do not pay attention to energy management and waste of energy. With the integration of energy market with the world, especially with China's accession to the world trade organization, any enterprise must compete with excellent enterprises in the world. At this time, the quality and interest of enterprise products will determine the survival of an enterprise It plays an important role in the interest of cold storage products, and it will play an important role in improving the economic benefits of cold storage enterprises to do a good job in energy saving. Therefore, it is of practical significance to analyze and study the power consumption of the refrigeration system in the cold storage industry, and to explore the energy-saving measures and methods in the operation of the refrigeration system, in order to save energy, reduce the production cost of the cold storage enterprises and improve economic benefits.

The main energy saving measures are as follows:

1. Prevent turning on the refrigeration compressor in the hottest time of the day

2. Reduce the temperature difference of heat exchanger, improve the efficiency of refrigeration system, and achieve energy-saving effect, but this needs to increase the area of heat exchanger.

3. Control the appropriate control accuracy. Start from the perspective of energy conservation. As long as the quality of commodities is not affected, the control accuracy should be low or high, and it is not necessary to pursue high-precision control unilaterally.

4. Reduce the parallel operation of the cold rooms with different evaporation temperatures. Since the refrigeration compressor with the same refrigeration can only operate at the same evaporation temperature, if the cold rooms with different temperatures operate in parallel, the warehouses with higher relative evaporation temperature will be in the state of high energy consumption. The higher the heat load of the cold room, the higher the energy consumption. This situation should be prevented.

5. Adjust the relevant parameters of the refrigeration system,

6. Real time calculation and control to ensure the best energy-saving operation of the system.