Open-Loop All-in-One Drying Machine for Food, Vegetables & Seafood
Open-Loop All-in-One Drying Machine for Food, Vegetables & Seafood

Versatile, efficient, and precision-controlled. Our heat pump drying system supports electric, natural gas, or pure heat pump as the heat source—giving you the flexibility to choose what works best for your operation. High-efficiency dehumidification and accurate temperature/time settings ensure perfect results every time, whether you’re drying blueberries, grapes, squid, seafood, seaweed, or virtually anything else.
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Company Advantages
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Diye Energy specializes in high-efficiency heat pump drying systems, delivering reliable performance across a wide range of agricultural and industrial applications.
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Our products are manufactured in compliance with international quality standards, with robust after-sales support to ensure long-term operational stability.
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With years of experience in the heat pump drying sector, we have built a solid supply chain and technical expertise, offering competitive solutions that balance quality and cost-effectiveness.
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Backed by an experienced R&D team and a responsive customer service group, Diye Energy has earned a trusted reputation among clients worldwide since our founding.
The energy saving heat pump dryer machine is using inverse Carnot cycle principle and driven by a small amount of electric energy.
1) The refrigerant (Freon) is pressurized by the compressor to become a high temperature and high pressure gas (temperature up to 100ºC) before it enters the heat exchanger (condenser);
2) The refrigerant gas is condensed and liquefied in the condenser to release high temperature heat energy,which will be transferred into the drying chamber by circulating fan to heat the air there.
3) The water in the materials are vaporized through the form of hot air, and the evaporated water steam is discharged away by the dehumidification system to achieve the purpose of drying the materials in the drying chamber.
4) After condensation and heat release,the refrigerant is changed into a low temperature and low pressure liquid through the expansion valve.
5) The liquid refrigerant will continuously absorb the low heat energy of the surrounding air and quickly evaporate into a gas state when it enters the evaporator due to the sudden reduction of the pressure;
6) The refrigerant that absorbs a certain amount of energy flows back to the compressor and the next cycle begins. In this way, the refrigerant continuously circulates the heat energy in the air to the drying chamber to heat the air.
Main Components of Heat Pump Dryer

Technical Specifications
| Model | DY-18YH(6HP) | DY-36YH(12HP) | DY-45YH(15HP) | DY-60YH(20HP) | DY-75YH(25HP) | DY-90YH(30HP) |
|---|---|---|---|---|---|---|
| Heating Capacity | 18KW | 36KW | 45KW | 60KW | 75KW | 90KW |
| Dehumidification Capacity | 18L/H | 36L/H | 45L/H | 60L/H | 75L/H | 85L/H |
| Refrigerant | R22/R134a | R22/R134a | R22/R134a | R22/R134a | R22/R134a | R22/R134a |
| Rated Power | 5.2KW | 11.5KW | 15.4KW | 18.4KW | 22.8KW | 25.5KW |
| Rated Current | 9.8A | 21.6A | 28.9A | 34.6A | 42.9A | 48A |
| Voltage/Frequency | 380V/50Hz | 380V/50Hz | 380V/50Hz | 380V/50Hz | 380V/50Hz | 380V/50Hz |
| Drying Temperature Ambient | 35~75℃ | 35~75℃ | 35~75℃ | 35~75℃ | 35~75℃ | 35~75℃ |
| Standard Airflow | 7200m³/h | 14400m³/h | 18000m³/h | 24000m³/h | 28800m³/h | 30000m³/h |
| Weight | 325kg | 360kg | 450kg | 610kg | 650kg | 750kg |
| Dimensions | 1600*1100*1300mm | 2000*1400*1500mm | 2000*1400*1500mm | 2300*1800*1600mm | 2300*1800*1600mm | 2580*1600*1830mm |












