Waste Heat Recovery Unit (Conventional Circulation Type)
Product Introduction
Product Features
High-efficiency, reliable heat exchangers:
A fully welded plate heat exchanger made of stainless steel 316L, specifically designed for waste heat recovery in air compressors.
The heat exchanger is designed with a small temperature difference and low pressure drop, employing an equal-flow, full-counterflow heat exchange configuration. Upon entering the unit, the working fluids are evenly distributed across all flow channels, ensuring uniform heat transfer, minimizing system pressure loss, and reducing fouling through enhanced turbulence, thereby improving heat transfer efficiency.
Its features include: high heat-transfer efficiency, low pressure drop, minimal liquid holdup, long service life, and the ability to operate continuously under high-temperature (200°C) and high-pressure (4.5 MPa) conditions.
Intelligent Control Mode:
Our company has independently developed a fully intelligent microcomputer monitoring system that operates entirely on preset parameters, providing round-the-clock unattended operation.
The color display dynamically shows the system’s operating status, while text messages clearly and accurately convey fault information, making it easy to understand at a glance.
Displays the air compressor oil temperature, hot water temperature, and water tank level; indicates the operating status of the make-up water system, the circulating water system, and the water supply system.
Low‑temperature and high‑temperature protection for the air compressor oil, over‑temperature protection for the coolant, low‑water level protection for the water tank, dry‑run protection for the water pump, pump overload protection, freeze‑protection, and equipment fault alarm.
It features a power‑failure recovery auto‑start function and operates automatically in response to the air compressor’s start and stop commands.
485 output port, enabling multi-unit coordinated control, remote monitoring of equipment operating status, and remote system operation. Advanced regulation technology:
All sensors and valves have undergone tens of thousands of rigorous reliability and safety tests, ensuring their dependable performance and durability.
Precise signal acquisition ensures the safe operation of the air compressor while achieving excellent energy-saving performance. Electrical components:
All components are sourced from reputable brands, ensuring system stability and durability.
Single-oil-circuit recovery-type model
| Product model | Compatible air compressor (kW/HP) | Waste heat recovery capacity (kW) | Outlet water temperature | Water production rate m³/h (temperature rise of 40°C) | Interface pipe diameter (oil circuit/water circuit) | External dimensions mm (L×W×H) |
| WZS-20A/DY | 15kW/20HP | 12 | 55~80℃ | 0.26 | DN25/DN32 | 700×400x800 |
| WZS-30A/DY | 22kW/30HP | 17.6 | 55~80℃ | 0.38 | DN25/DN32 | 700×400×800 |
| WZS-40A/DY | 30kW/40HP | 24 | 55~80℃ | 0.52 | DN25/DN32 | 700×400×800 |
| WZS-50A/DY | 37kW/50HP | 29.6 | 55~80℃ | 0.64 | DN25/DN32 | 700×400×800 |
| WZS-60A/DY | 45kW/60HP | 36 | 55~80℃ | 0.78 | DN25/DN32 | 750×400×870 |
| WZS-75A/DY | 55kW/75HP | 44 | 55~80℃ | 0.95 | DN25/DN32 | 750×400×870 |
| WZS-100A/DY | 75kW/100HP | 60 | 55~80℃ | 1.3 | DN50/DN50 | 750×400×870 |
| WZS-125A/DY | 90kW/125HP | 72 | 55~80℃ | 1.6 | DN50/DN50 | 850×460×905 |
| WZS-150A/DY | 110kW/150HP | 88 | 55~80℃ | 1.9 | DN50/DN50 | 850×460×905 |
| WZS-175A/DY | 132kW/175HP | 105.6 | 55~80℃ | 2.3 | DN50/DN50 | 850×460×905 |
| WZS-200A/DY | 150kW/200HP | 120 | 55~80℃ | 2.6 | DN50/DN50 | 850×460×905 |
| WZS-220A/DY | 160kW/220HP | 128 | 55~80℃ | 2.8 | DN50/DN50 | 850×460×905 |
| WZS-250A/DY | 185kW/250HP | 148 | 55~80℃ | 3.2 | DN50/DN50 | 900×500×1000 |
| WZS-300A/DY | 225kW/300HP | 180 | 55~80℃ | 3.8 | DN50/DN50 | 900×500×1000 |
| WZS-350A/DY | 250kW/350HP | 200 | 55~80℃ | 4.3 | DN50/DN50 | 900×500×1000 |
| WZS-400A/DY | 300kW/400HP | 240 | 55~80℃ | 5.1 | DN50/DN50 | 1100×600×1100 |
| WZS-450A/DY | 315kW/450HP | 252 | 55~80℃ | 5.4 | DN50/DN50 | 1100×600×1100 |
| WZS-500A/DY | 355kW/500HP | 284 | 55~80℃ | 6.1 | DN50/DN50 | 1200×650×1200 |
| WZS-550A/DY | 400kW/550HP | 320 | 55~80℃ | 6.8 | DN65/DN65 | 1200×650×1200 |
| WZS-600A/DY | 450kW/600HP | 360 | 55~80℃ | 7.7 | DN65/DN65 | 1200×650×1200 |
Dual‑oil‑circuit recovery configuration (one unit matched to two air compressors)
| Product model | Compatible air compressor (kW/HP) | Waste heat recovery capacity (kW) | Outlet water temperature | Water production rate m³/h (temperature rise of 40°C) | Interface pipe diameter (oil circuit/water circuit) | External dimensions mm (L×W×H) |
| WZS-30A/SY | 22kW/30HP | 35.2 | 55~80℃ | 0.76 | DN25/DN32 | 750×400×870 |
| WZS-50A/SY | 37kW/50HP | 59.2 | 55~80℃ | 1.3 | DN25/DN32 | 750×400×870 |
| WZS-75A/SY | 55kW/75HP | 88 | 55~80℃ | 1.9 | DN25/DN32 | 850×460×905 |
| WZS-100A/SY | 75kW/100HP | 120 | 55~80℃ | 2.6 | DN50/DN50 | 900×500×1000 |
| WZS-125A/SY | 90kW/125HP | 144 | 55~80℃ | 3.1 | DN50/DN50 | 900×500×1000 |
| WZS-150A/SY | 110kW/150HP | 176 | 55~80℃ | 3.8 | DN50/DN50 | 900×500×1000 |
| WZS-175A/SY | 132kW/175HP | 211.2 | 55~80℃ | 4.5 | DN50/DN50 | 900×500×1000 |
| WZS-200A/SY | 150kW/200HP | 240 | 55~80℃ | 5.1 | DN50/DN50 | 1100×600×1100 |
| WZS-220A/SY | 160kW/220HP | 256 | 55~80℃ | 5.5 | DN50/DN50 | 1100×600×1100 |
| WZS-250A/SY | 185kW/250HP | 296 | 55~80℃ | 6.3 | DN50/DN50 | 1200×650x1200 |
| WZS-300A/SY | 225kW/300HP | 360 | 55~80℃ | 7.7 | DN50/DN50 | 1200×650×1200 |
Oil and gas dual‑path recovery system model
| Product model | Compatible air compressor (kW/HP) | Waste heat recovery capacity (kW) | Outlet water temperature | Water production rate m³/h (temperature rise of 40°C) | Interface pipe diameter (oil circuit/water circuit) | External dimensions mm (L×W×H) |
| WZS-100A/YQ | 75kW/100HP | 66 | 55~80℃ | 1.5 | DN50/DN50/DN50 | 900×500×1000 |
| WZS-125A/YQ | 90kW/125HP | 79.2 | 55~80℃ | 1.7 | DN50/DN65/DN50 | 900×500×1000 |
| WZS-150A/YQ | 110kW/150HP | 96.8 | 55~80℃ | 2.1 | DN50/DN65/DN50 | 900×500×1000 |
| WZS-175A/YQ | 132kW/175HP | 116 | 55~80℃ | 2.5 | DN50/DN80/DN50 | 900×500×1000 |
| WZS-220A/YQ | 160kW/220HP | 140.8 | 55~80℃ | 3.1 | DN50/DN80/DN50 | 1100×600×1100 |
| WZS-250A/YQ | 185kW/250HP | 162.8 | 55~80℃ | 3.5 | DN50/DN100/DN50 | 1200×650×1200 |
| WZS-300A/YQ | 225kW/300HP | 198 | 55~80℃ | 4.3 | DN50/DN100/DN50 | 1200x650x1200 |
| WZS-350A/YQ | 250kW/350HP | 220 | 55~80℃ | 4.7 | DN50/DN100/DN50 | 1200×650x1200 |
Note: The above specifications are based on the air compressor operating at full load with a water temperature rise of 40°C. Should product modifications result in changes to the specifications, the data listed on the nameplate shall prevail.
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Email: info@wzscompressor.com
Landline: 0086-21-39193352
WhatsApp: 8613381795589
Address: Bldg. 6, No.625 Rongchang Rd., Lvxiang Town, Jinshan District, Shanghai, China
Postal code: 201518
