Reed Grain Cooling Units are mobile equipment specifically designed through comprehensive analysis of China's grain storage environment characteristics and climate features. They serve as a crucial means for grain reserve depots to achieve green grain storage and scientific grain preservation goals. Their function is to cool and humidity-regulate air, then blow air of suitable temperature and humidity for the stored grain into the warehouse.

I. Application Scenarios

Grain cooling and dehumidification operations in flat warehouses

Grain cooling and dehumidification operations in shallow circular silos

Grain cooling and dehumidification operations in vertical silos

II. Scope of Application

Emergency handling of heated grain storage
High-moisture grain storage

Low-temperature storage of high-quality rice

III. Working Principle

Reed Grain Cooling Units utilize an air circulation treatment method to draw untreated air into the unit's air treatment section. After cooling and dehumidification, the air enters the warehouse through the air inlet, moves into the underground duct system, and is delivered to the bottom of the grain pile. Due to negative pressure, the low-temperature air gradually flows and diffuses upward, reducing the grain temperature. Finally, the air passes through a certain thickness of the grain layer and returns to the unit's air inlet via the warehouse exhaust outlet. Through this cyclic process, the grain layer is gradually treated to the predetermined temperature over time. The air circulation principle is detailed in the following diagram:

IV. Technical Advantages

1. Stable and reliable performance, high energy utilization efficiency

All unit components use world-renowned brands, comply with EU standards, and are paired with self-developed high-efficiency heat exchangers and unique air duct designs, making the overall performance far exceed national standards by 2%.

2. Multiple cooling forms to meet requirements of different regions

Depending on regional usage, we can provide various types of grain cooling units, including evaporative cooling, geothermal cooling, natural air cooling, and water cooling, fully meeting the needs of special regions such as arid water-scarce areas, high-temperature high-humidity areas, extremely cold low-temperature regions, high-altitude windy and sandy areas, and coastal salt fog corrosion zones.

3. Significant low-temperature grain storage effect, adaptable to various environmental conditions

Various functional sections can be selected to complete air purification and temperature-humidity regulation to meet environmental requirements. Fresh air intake of 0-100% can be introduced to maintain indoor air freshness, allowing for indoor regulation and ventilation even during transitional seasons. With the support of automatic control functions, independent regulation of small spaces can be achieved, ensuring energy efficiency. The equipment exhausts hot air upward, unaffected by environmental wind direction.

4. Frequency conversion control

Based on temperature changes inside the grain warehouse, fan frequency conversion technology automatically adjusts the air supply volume, thereby improving unit efficiency and achieving optimal temperature and humidity conditions inside the warehouse.

5. Easy equipment mobility

The unit base frame is designed with movable casters, allowing for輪流 use across multiple grain warehouses, resulting in high equipment utilization.

6. Automatic control system

Fully automatic control using PLC and touch screen, making operation simple and convenient.

7. Remote control

On-site equipment has remote communication功能, using Modbus RTU communication protocol and equipped with RS 485 communication interface, enabling remote monitoring and operation of the equipment.

Air-cooled Mobile Grain Cooling Unit

Unit Model GCA55
GCA85 GCA100
Standard Cooling Capacity (KW) 55 85 100
Outlet Air Temperature (°C) 5~15
Outlet Air Relative Humidity (%) 65~90
Power (KW) 29.8 42.3 55.9
Power Supply 3N~380V 50HZ
Refrigerant
R410A, R407C or R22

Dimensions (L*W*H) mm 2800*2000*2200 3200*2000*2400 3400*2000*2750
Weight (kg) 2700
3150 3890
Safety Measures
High pressure, low pressure, overload, overcurrent, phase loss safety protections and alarm measures



Water-cooled Grain Cooling Unit

Unit Model GCW55 GCW85 GCW100
Standard Cooling Capacity (KW) 55
100
Outlet Air Temperature (°C) 5~15
Power Supply 14 20 27
Refrigerant 18.5 28.5 42
Dimensions (L*W*H) mm R410A, R407C or R22

Weight (kg)

Safety Measures High pressure, low pressure, overload, overcurrent, phase loss safety protections and alarm measures
Note:

1. Nominal conditions: Inlet air 30°C, RH81%, Outlet air 12°C, RH75%.

2. The above parameters are for reference only; changes in working conditions may lead to variations in cooling capacity. For specific data, please contact Reed. 3. Products can be customized according to customer requirements, such as non-standard power supplies.


VII. Economic Benefit Analysis (Based on a fixed reserve of 35,000 tons of rice at a test depot)

1. Reduce storage costs

Using conventional storage methods such as ventilation, warehouse turning, and fumigation, the annual direct storage cost is 195,000 yuan; whereas using Reed Grain Cooling Units for storage saves expenses on常規(guī) operations like fumigation and warehouse turning, resulting in total direct storage costs of 91,000 yuan, saving 104,000 yuan.

2. Avoid grain loss

Using Reed Grain Cooling Units for storage reduces dry matter loss from grain respiration, moisture reduction loss, and warehouse turning loss, totaling approximately 1.08% of the stored grain. This avoids a grain shortage of about 378 tons. With rice priced at 1,200 yuan/ton, economic losses of approximately 450,000 yuan can be avoided.

3. Increase sales price

The refined rice processed from rice stored with Reed Grain Cooling Units is very close in both sensory quality and edible quality to refined rice processed from fresh rice. When sold upon出庫(kù), the price per ton increases by 60 yuan, generating a profit of 2.1 million yuan.

4. Save rotation costs

Based on the rate of quality change, the storage period can be extended by 2-3 years compared to conventional storage conditions. If extended for one rotation cycle, with rotation costs calculated at 70 yuan/ton for rice, rotation costs of 2.45 million yuan can be saved.