Guangdong Diye Energy Equipment Co., Ltd.
Heat pump drying systems · Foshan, China
Heat pump dryers for vegetables, meat, seafood, laundry, chilli, paddy and sludge. From a 100 kg batch room that ships assembled to a 100 t grain tower on site. Closed-loop dehumidification, PLC control, and chambers built to your batch size — not the other way round.
01Applications
Nine product lines on one control platform — eight for food and agricultural produce, one for sludge. Pick the closest one; we size the batch, airflow and chamber from your material.
Dried output
Fruit
Vegetable
Spices
Seafood
Nuts
Chilli
Mango
Walnut02Systems
From a 100 kg batch room to a 100 t grain tower. Every unit runs the same closed heat-pump cycle: heat, dehumidify, recirculate.
BATCH ROOM · 100 / 300 / 500 KG
Three batch sizes — 100, 300 and 500 kg per batch, with 32, 64 or 96 trays. Delivered as one assembled unit, so there is no on-site installation.
FLAT BED · 3–5 T / BATCH
Low, wide drying bin fed by a forced-air heat-pump cabinet. 3–5 tonnes per batch, built for paddy, rice and wheat.
CONTINUOUS LINE · CUSTOM
Continuous mesh-belt line: inclined feed conveyor, modular drying sections with access doors, discharge conveyor. Line size built to your layout.
GRAIN TOWER · 15–100 T
Stacked-panel tower on an inverted-pyramid hopper, with the heat-pump unit alongside. From 15 t up to 100 t, sized to your throughput.
HEAT PUMP · VEGETABLE
Closed-loop heat-pump cabinet for sliced and blanched vegetables, with digital temperature and time setting on the front panel.
WALK-IN ROOM · MEAT
Walk-in room in insulated panels, with full-height doors for loading racks. Beef, pork, sausage and pet-food strips.
LAUNDRY · 50/100 KG
Stainless-steel tumble dryer built for laundries, hotels and hospitals — 50 kg or 100 kg per load.
SEAFOOD · LOW TEMPERATURE
Anti-corrosion build for salt-laden air. Low-temperature drying at 10–75 °C for seafood, fish and shrimp, with roll-in racks on two ramps.
SLUDGE · < 70 °C
Municipal and industrial sludge: 80 % moisture down to 10–30 %, up to 80 % volume reduction, no exhaust emission.
03Running cost
One duty, five heat sources: remove 100 kg of water from 15 ℃ to 50 ℃, then count what the fuel costs. Same batch, same end state — only the heat source changes.
| Heat source | Fuel | Efficiency | Consumptionper 100 kg | Energy price | Costper 100 kg | Inputvs heat pump | Safety & emissions |
|---|---|---|---|---|---|---|---|
| Air-source heat pumpDY series | Electricity | 300 % | 37.0 kWh | ¥1.00 / kWh | ¥37.0 | 1.0× | No flame, no flue; zero on-site emissions |
| Coal boiler | Coal | 42 % | 41.5 kg | ¥1.00 / kg | ¥41.5 | 6.5× | Open fire and ash; SO₂, CO and dust |
| Gas boiler | Natural gas | 75 % | 14 Nm³ | ¥4.30 / m³ | ¥60.2 | 4.4× | Leak, fire, explosion; mild SO₂ / CO |
| Oil boiler | Diesel | 75 % | 14 kg | ¥6.50 / kg | ¥91.0 | 4.4× | Leak, fire, explosion; flue smoke; restricted in some regions |
| Electric resistance heater | Electricity | 95 % | 106.7 kWh | ¥1.00 / kWh | ¥106.7 | 2.9× | Exposed heating tubes; zero emissions |
← Scroll the table horizontally on smaller screens
¥37 to move 100 kg of water. The same duty costs 2.9× that on a resistance heater and 2.5× on a diesel boiler — the heat pump moves existing heat instead of burning fuel to make new heat.
Coal is the only fuel that comes close on price, and it brings 6.5× the primary energy, an open fire, ash and SO₂ with it. Gas costs 63 % more than the heat pump and still puts a flame and a flue on your site.
Cost = consumption × unit price. Prices are the Chinese industrial rates our energy sheet was built on: electricity ¥1.00/kWh, diesel ¥6.50/kg, natural gas ¥4.30/m³, coal ¥1.00/kg. Your tariff decides the answer — send us your rates and we re-run it. A 300 % efficiency figure is the same thing as COP 3.0. Chamber sizing is quoted per project on top of this; the DY range covers 18–90 kW of heating capacity and larger chambers are built to order.
04Why Diye
A heat pump moves existing heat instead of burning fuel to make new heat. That single difference drives every number below.
About 50 % less energy than conventional hot-air drying; operating cost 30–80 % lower than traditional heating energy, according to our field data.
No combustion, no pollutant discharge, no exhaust emission — aligned with clean-energy and zero-emission policy requirements.
Gentle, near-natural drying close to ambient conditions: colour and appearance hold, yield stays high, nutrients are retained.
Automatic temperature and humidity control with remote monitoring. Drying curves are set per product, not per operator.
Wide application range and a design life of up to 15 years. High-pressure, low-pressure and exhaust protection come standard.
Simple installation, low maintenance, safe and durable. No boiler, no fuel line, no flame.
05Solutions
Each programme sets the temperature curve, humidity ceiling and airflow for that material group — the part most buyers underestimate.
06Company
Guangdong Diye Energy Equipment Co., Ltd. is a high-tech enterprise focused on R&D, production, marketing and service of air-energy heat pump dryers. The company works to a single principle: high efficiency, energy saving, safety and environmental protection.
In-house R&D, a multi-function drying test room and an intelligent research room let us test a drying curve before a chamber is built — so the machine you receive is already tuned to your material.
07How we work
Material, initial and target moisture, batch per cycle, available footprint and power supply.
Model selection, heat load, airflow and chamber layout, with a running-cost estimate.
Production, wiring and function test against the agreed drying curve before shipment.
Installation guidance, commissioning support and operator training, online after that.
08Visitors
Buyers who visit Foshan put their own material through the test chamber, walk the assembly floor and sign off before the container is packed. The frames below are from those days.
09Export
Plywood cases or shrink-wrapped bundles, strapped down at our own loading dock. Every consignment is photographed before the truck pulls out, so you know exactly what went into the container.
Vietnam
Thailand
Indonesia
Philippines
South Korea
India
UAE
Germany
Australia
United States
Brazil
Uruguay10Enquiry
Send material, moisture levels and batch target. We reply with a model, a chamber layout and a running-cost estimate — usually within one working day.
