D8DH5‑5000‑AWM/D Copeland DWM Series 50HP Semi-Hermetic Piston Refrigeration Compressor This 8-cylinder semi-hermetic compressor comes with capacity unload mechanism, which allows part-load operation to save energy and reduce frequent start-stop. 

 ✅ Key Features - Model: D8DH5‑5000‑AWM/D - Power: 50HP, 8 Cylinder - Voltage: 380V/400V, 3 Phase, 50Hz - Structure: Semi-hermetic, repairable piston compressor - With capacity unload function for fluctuating cooling load - Discus valve cylinder head, durable for long time continuous running - Compatible refrigerant: R404A, R507, R22, R407C 

 ✅ Application Large cold storage, quick-freezing tunnel, food processing factory, pharmaceutical cold room, industrial low temperature chiller. 

 ✅ Package: Export fumigated wooden case.

D8DH5‑5000‑AWM/D (Copeland DWM 50HP 8-cylinder with capacity unload) Application Scenarios

Key point: The DH model is equipped with cylinder head unload mechanism to achieve part-load regulation. It is ideal for medium & large low-temperature refrigeration projects with fluctuating load and long continuous operation, which is its biggest advantage over the SJ model.

???? Food Cold Chain Industry (Most Common)

1. Medium & large low-temperature freezers (-18℃ ~ -25℃)Cold storage for frozen meat, aquatic products and fresh goods; cold chain logistics parks and finished-product cold rooms in food processing plants. The capacity unload function reduces frequent start-stop cycles and saves energy when load fluctuates with goods inbound & outbound.

2. Quick-freezing workshops / Quick-freezing tunnelsRapid freezing for dumplings, seafood and fruits & vegetables. It requires stable large cooling capacity under low evaporating temperature.

3. Chilled rooms in food factories (0~-10℃)Raw material and semi-finished product storage for slaughterhouses, dairy plants and prefabricated food factories.

4. Large cold storage in agricultural wholesale markets for fruit & vegetable preservation and meat storage.

???? Industrial Refrigeration

1. Medium & low-temperature industrial chiller unitsProcess cooling for chemical, pharmaceutical and plastic industries. Ethylene glycol low-temperature chillers for cooling reactors and production equipment.

2. Refrigeration host for freeze-drying equipmentPre-cooling for vacuum freeze drying (food & pharmaceutical lyophilization).

3. Process cooling in explosion-proof workshops (with matched refrigerant and electric control).

???? Pharmaceutical Industry

• Pharmaceutical cold rooms and low-temperature storage for biological products (vaccines and reagent raw materials). Demands stable continuous operation and precise temperature control.

???? Large Commercial Refrigeration

• Central refrigeration machine rooms for large supermarkets, cold storage in large hotel kitchens.

• Port and foreign trade cold chain warehouses. (This model is widely used for export projects; the wooden crate in the photo is fumigated export packaging.)

✅ Selection Advantages

1. Capacity Unload (DH version): Can unload 2 cylinders and run at 50% load. When the cold room load drops at night with less stock, the compressor avoids repeated start-stop, reduces inrush current, extends service life and cuts power consumption.

2. Discus valve cylinder head: Copeland DWM disc valve design with durable valve plates, suitable for long-term continuous operation and better liquid slugging resistance than older piston compressors.

3. Semi-hermetic construction: Internal crankshaft, valve plates and bearings can be disassembled and repaired, convenient for long-term maintenance in industrial projects.

4. Wide temperature range: Works for medium and low temperature conditions, compatible with refrigerants including R404A/R507/R22/R407C.