1. The choice of innovative, second-hand equipment and second-hand plates leads to higher power consumption.
Reason: the internal structure of used equipment is worn out and not as stable as new equipment. Just like used equipment, the service life is long. Then innovation, the internal use of a long time, many parts wear and tear, resulting in higher electricity costs.
Reason: Used boards and thermostatic cold storage boards are usually used for about 10 years and have a long service life. After two dismantling, a lot of sealing local damage, warehouse board internal polyurethane insulation performance decline, resulting in loss of cold, poor insulation effect, the unit work time is extended, the electricity bill is higher.
Solution: choose the regular company equipped with constant temperature cold storage unit, as little as possible to choose second-hand equipment.
2、If you don’t pay attention in the process of using, the in and out time is not controlled, which will lead to higher electricity cost.
Reason: when the constant temperature cold storage is in use, the door is not closed, the light is not closed, the heat enters, the library light is opened for a long time, the temperature inside the library rises, and the unit starts to work.
Reason: Constant temperature cold storage choose to enter and exit at noon. The high outdoor temperature at noon causes the temperature to enter the warehouse. The high heat of other goods also causes the unit to work for a long time.
Solution: If the demand for goods is frequent, and it is impossible to control the time of the goods, you can install an air curtain at the entrance of the warehouse, so that the air curtain can isolate the heat outside the warehouse, reduce the loss of cold energy in the warehouse, and naturally reduce the unit’s working time.
3, not on time maintenance of thermostatic cold storage plate, compressor, air curtain machine, exhaust pipe defrosting led to an increase in equipment power.
Reason: plates and equipment and cars, as well as the need for timely maintenance. So we should be able to make a clear point, thermostatic cold storage in the plate with a long time, the silicone is simple to fall off, the plate is simple to bump, the sealing effect is not good.
Reason: there are materials in the unit that need to be replaced on time, such as refrigeration oil. If it is not replaced for a long time, just like the transmission oil and motor oil of the car, it will become black and thick, affecting the working effect.
Solution: Maintain the constant temperature cold storage on time, check the sealing effect in the storage room, see whether there is black gel under the door of the storage room, whether there is air outflow, and close the door tightly. Then, use the lighter at the bottom to test whether the fire will go out. If it is cold, you can tell the maintenance team to make adjustments. After all, they are all mechanical parts, and they will be loose after a long time.
4, improper design of cold storage, insufficient insulation thickness or equipment configuration is unreasonable;
If the cold storage power consumption is caused by improper installation and design, you can carry out energy-saving transformation of the cold storage; through the transformation of the refrigeration system, insulation structure or equipment configuration to improve the efficiency of the cold storage and reduce the cold loss, to achieve the purpose of reducing the operational power consumption.
Design energy-saving aspects:
(1) Reasonably determine the design parameters. Reduce the temperature difference between the refrigerant evaporation temperature and the temperature inside the cold storage, according to the estimation, when the evaporation temperature is reduced by 1 ℃, it is necessary to consume 3% -4% more electricity. In addition, reduce the temperature difference value to reduce the dry consumption of food stored in the warehouse is also extremely favourable.
(2) Reasonable setting of refrigeration capacity, compressor refrigeration capacity and cold storage of the actual cold consumption of reasonable settings. In the cold storage cold consumption calculation summary, can not blindly increase the insurance factor and more equipped with refrigeration capacity.
Note: Perhaps some customers feel that the cost of cold storage renovation is not cheap and hope to solve it by other simpler methods. In fact, the economic value of cold storage energy saving is very high, we must know that the service life of cold storage can be up to more than ten years, in the later transformation is a little bit uneconomical, but in the early and mid-term transformation can greatly improve the efficiency of the cold storage and operating costs, it is well worth the money.
5, sloppy management, operators are not professionally trained or safety awareness is weak.
Management of energy saving:
(1) Reasonable start-up, reduce compressor power consumption. At present, most of the cold storage still use manual operation to adjust the boot, blind boot phenomenon prevails. In order to improve the rationality and economy of the compressor, the research results show that three principles can be followed.
First, the correct estimate of the actual cold storage cold consumption changes.
Second, to ensure that under the premise of meeting the refrigeration load, as far as possible to reduce the number of start-up units, improve the operating efficiency of the compressor.
Third, adjust the start-up time. Under the premise of not affecting the quality of cold storage of cold objects, use the night “valley price” operation, reduce the daytime “peak price” operation time, avoid the peak period of electricity consumption, reduce operating costs.
(2) Quickly locate the equipment that causes high energy consumption, and promptly and accurately identify and solve problems. Compare the overall monthly power consumption with the detailed power consumption of each cold storage project and each set of refrigeration system in each time period, such as the current real-time power, the power consumption of the day, and the historical trend of energy consumption. Detailed investigation of other parameters of high power consumption equipment, and then targeted equipment maintenance and management, to achieve the purpose of energy saving.
Post time: Aug-08-2023
