Chocolate warehouse dehumidification case, detailed explanation of warehouse dehumidifier selection news, seeing that the rainy season is coming, what should we do if the warehouse is wet? How to prevent moisture in the warehouse? How to control the warehouse humidity? The humidity problem and humidity control in the warehouse have become the focus of many factories or enterprises. In the past, most warehouses were simply ventilated to prevent product damage and equipment corrosion caused by humidity; Now, with the emphasis of factories or enterprises on product quality and the change of business management philosophy, more and more enterprises begin to attach importance to the environmental construction of warehouses, improve their product quality and service quality, reduce risks and unnecessary losses, and improve their comprehensive competitiveness
I. Actual situation on site:
A chocolate warehouse covers an area of 6000 m2, with a height of 16 m, and about 1500 m2 is stored locally. The chocolate storage requirements are that the temperature is below 18 ℃ and the humidity is below 65% RH. There are 10 sets of air conditioners with lifting type air cabinets, and the air volume is 21000 CMH, which can meet the temperature requirements. The humidity cannot meet the requirements in summer, and the worst is above 90% RH
II. Analysis of the project plan:
Because it is stored locally, the first consideration is to isolate 1500 m2 and only dehumidify this space. However, after the plan comes out, it cannot meet the requirements of fire protection, so this plan is not feasible; Finally, the overall warehouse shall be dehumidified
III. On site wet load analysis:
According to the field survey, it is found that the load source is:
The whole warehouse maintenance structure is not well sealed, and the window is not well sealed
The unloading platform for products to enter and exit the warehouse and the door to enter and exit the buffer zone are opened for a long time
The products brought in from the outside meet the requirements of
. IV. Analysis on the selection of dehumidifiers:
The original air conditioner with suspended air cabinet should be retrofitted to increase refrigerators, reduce water supply temperature, and increase the heat exchange area of the surface cooler with suspended air cabinet, so as to ensure that the air dew point behind the surface cooler is lower than the indoor dew point requirements, and can take away the wet load of the warehouse property. The calculated air supply dew point should reach about 6 degrees, The chiller is required to provide water of about 0 ℃, and the reheat is required behind the surface cooler; It is difficult to transform the refrigerator in this scheme, and the reheating heat source has no other waste heat, so only electricity can be used; Results: The implementation of this scheme was difficult, so the scheme was abandoned
Add 8 dehumidifiers in the warehouse_ D Hoisting warehouse dehumidifier, without fan, is installed at the air return outlet of the original hoisting air cabinet. The return air is dehumidified first, then cooled by the hoisting air cabinet air conditioner, and then sent to the warehouse through the air duct; Because the dehumidifier itself has a certain heat dissipation, two additional cooling dehumidifiers are added to overcome the heat dissipation of the dehumidifier through the cooling of the cooling dehumidifier, so as not to increase the load of the air conditioner with the lifting fan cabinet. Results: This scheme was approved by customers in terms of implementation difficulty and price, so this scheme was selected
Rebuild the automatic door of the buffer room, and add 4 sets in the buffer room of the unloading platform_ Floor type warehouse dehumidifier to ensure that less outdoor wet air enters the warehouse
The whole warehouse has been sealed for maintenance structure
V. The commissioning results after the implementation of the scheme:
The installation of the equipment was completed in July, which was just a hot and humid weather. After several days of commissioning verification, the humidity was guaranteed to be below 60% RH, without affecting the temperature of the warehouse
Attached PS: Technical parameters and model selection reference of Parkoo series intelligent warehouse dehumidifier:
Product model ------ dehumidification capacity ------ applicable area ------ power ------ power supply ------ circulating air volume ------ net weight
_-- 28(L/D)---30-50(㎡)----420(W)----220V/50Hz---190m ³/ h---15kg
_-- 58(L/D)---50-80(㎡)----670(W)----220V/50Hz---850m ³/ h---25kg
_--- 90(L/D)---90-120(㎡)---1700(W)---220V/50Hz---1125m ³/ h--50kg
_-- 138(L/D)--130-180(㎡)--2000(W)--220V/50Hz--1725m ³/ h--55kg
_-- 168(L/D)--180-230(㎡)--2800(W)--380V/50Hz--2100m ³/ h--120kg
_-- 240(L/D)--240-350(㎡)--4900(W)--380V/50Hz--3000m ³/ h--160kg
_-- 360(L/D)--360-450(㎡)--7000(W)--380V/50Hz--4500m ³/ h--200kg
_-- 480(L/D)--500-700(㎡)--9900(W)--380V/50Hz--6000m ³/ H-230kg
[Requirements for dehumidifier leasing] The lease starting conditions for dehumidifiers are: the number of leased dehumidifiers is ≥ 5, and the lease term is ≥ 30 days
[Dehumidifier rental charging standard] 80-150 yuan/set/day (the price can be determined according to the rental model, rental quantity and rental days)
◎ Precautions for model selection -- The dehumidification capacity and model of dehumidifier are scientifically calculated mainly according to the volume of the used environment space, the size of fresh air volume, the humidity requirements required by the space environment and other specific values. In addition, it should be noted that the relative humidity of the environment is related to the temperature of the environment. The higher the temperature is, the faster the humidity will evaporate. On the contrary, the worse the effect will be. Therefore, when configuring the dehumidifier, you need to select the type under the guidance of professionals, so that you can select the dehumidifier that is most suitable for you
VI. After the implementation of the scheme, it is found that the problem
that the air volume adjustment of dehumidifier and the air conditioning box of the lifting type air cabinet is relatively difficult to use, which is easy to cause the evaporator to freeze, the defrosting scheme is optimized through the control program to solve this problem; If there are similar projects in the future, it is better to make temperature and humidity separate control
VII. Explanation of scheme control method
The equipment is relatively high in hoisting. We have adopted 485 communication controlled by the equipment itself, which is converted to wireless signal transmission. We have done wireless signal reception on the ground, which is convenient for customers to operate and replaces wire control
For the above dehumidification case of chocolate warehouse, all news reports detailing the selection of dehumidifier in the warehouse are provided by Parkoo Electric for your reference and learning
