Food Industry Air-cooled Screw Chillers
Description of Food Industry Air-cooled Screw Chillers
Air-cooled screw chillers are specialized industrial cooling systems tailored to the rigorous, hygienic, and continuous cooling demands of food processing, storage, and cold chain logistics. They use twin-screw compressors and air-cooled condensers (no cooling towers or dedicated water loops) to remove heat from process water or glycol solutions, delivering precise, stable low temperatures while complying with food safety standards (e.g., HACCP, FDA).
Characteristics of Food Industry Air-cooled Screw Chillers
Food - Grade Hygiene Standards
All parts in contact with the cooling medium use food - grade materials to ensure that there is no pollution to food during the cooling process, complying with food safety and hygiene regulations and standards, such as HACCP.
Environment - Friendly Refrigerants
Compatible with a variety of environmentally friendly refrigerants, such as R134a, R407C, etc., which have zero ozone - depleting potential (ODP) and low global warming potential (GWP), in line with international environmental protection requirements and the sustainable development needs of the food industry.
Easy Maintenance and Cleaning
The unit is designed with easy - to - disassemble components and a self - cleaning system, which reduces maintenance workload by about 60%, shortens maintenance time, and ensures the hygiene and cleanliness of the equipment, reducing the risk of cross - contamination in food processing.
Versatile Application Scenarios
It can be widely used in various links of the food industry, such as the quick freezing of meat, seafood, and fruits and vegetables, the refrigeration and fresh - keeping of dairy products and beverages, the temperature control in the fermentation process of bread and pastries, and the cooling of food processing equipment, providing a one - stop cooling solution for the food production line.
· PrFood processing workshops
· Cold stores and freezer rooms
· Cold chain logistics centres and distribution warehouses
· Pharmaceutical factories and cleanrooms
· Biological laboratories and sample repositories
· Flower preservation chambers
· Low-temperature storage for
| Model | CW（R)F510C | Condensing power（kw） | 2.2x10 |
|
Refrigeration capacity(kw) |
509.4 | Evaporator flow rate(m3/h) | 87.6 |
| Heating capacity(KW) | 526.7 |
Evaporator water（kpa） |
40-80 |
| Total power(KW) | 172.4 |
Evaporator connection pipe specifications |
2DN125 |
| Power supply | 3N/380V/50HZ |
Refrigerant |
R22 |
| Compressor model | Semi-hermetic twin-screw compressor |
Refrigerant charge(kg) |
220 |
| Compressor Starting Method | 25% (33%) load + star-delta voltage reduction starting |
Length(mm) |
6000 |
| Compressor input power(KW) | 150.4 |
Width(mm) |
2350(Includes lifting blocks, excludes lifting blocks 2200) |
| Compressor operating current（A） | 253.7 |
Height(mm) |
2580 |
| Condenser model |
Copper tube and aluminium fin heat exchanger |
Net weight(kg) | 5700 |
|
Condenser Fan Model |
Low-noise axial-flow fan | Operating weight(kg) | 5950 |
|
Condenser airflow(m3/h) |
240000 |
|
|
FAQ: Food Industry Air-cooled Screw Chillers (25 Questions, Over 1,200 Words)
1. What is an air-cooled screw chiller, and why is it widely used in the food industry?
2. What food processes are air-cooled screw chillers mainly used for?
3. What are the core advantages of air-cooled vs. water-cooled screw chillers in food factories?
- No cooling tower, piping, or water treatment: Lower initial investment and simpler maintenance.
- Hygiene & safety: No standing water, reducing Legionella and microbial risks.
- Flexible installation: Rooftop, outdoor, or open-space placement; suitable for water-scarce areas.
-
Easy cleaning: Stainless steel panels and anti-corrosion fins meet food-plant washdown requirements.
Limitations: Slightly lower efficiency in extreme heat; best for medium-to-large loads with stable ambient conditions.
4. What cooling capacity range is suitable for food industry air-cooled screw chillers?
5. What temperature range can food-grade air-cooled screw chillers provide?
- Normal cooling: 5–12°C chilled water (for pasteurization, packaging, workshop cooling).
- Low-temperature cooling: -5–5°C (using ethylene glycol solution) for meat/seafood rapid cooling.
- Ultra-low temperature: Down to -15°C (custom) for freezing tunnels and quick-freezing processes.
6. What refrigerants are suitable for food industry air-cooled screw chillers?
7. What hygiene and material requirements apply to food-industry chillers?
- Inner tank, water-side components: SUS304/316 stainless steel (easy to clean, corrosion-resistant).
- Cabinet: SUS304 or plastic-coated steel, smooth surface, no dead corners.
- Condenser fins: Hydrophilic anti-corrosion coating, resistant to workshop moisture and cleaning agents.
- Seals: Food-safe, oil-resistant, non-toxic materials to prevent coolant or lubricant leakage.
8. How to select the right chiller capacity for a food production line?
- Calculate total heat load: process heat, equipment heat, pipeline loss, and ambient heat gain.
- Reserve 10–15% margin for peak production, high-temperature seasons, or line expansion.
- Match with part-load efficiency (inverter screw units perform better in variable loads).
- Combine with process features (continuous vs. intermittent, normal vs. low-temperature).
9. Can air-cooled screw chillers run reliably outdoors in high-temperature environments?
10. How to prevent frost or freezing in winter outdoor operation?
- Use ethylene glycol aqueous solution (20–40% concentration) as coolant instead of pure water.
- Install anti-freeze protection, automatic water drainage, and insulation for pipelines.
- Set minimum startup temperature and intermittent operation to keep fluid warm.
- Drain water completely during long-term shutdown to avoid pipe cracking.
