PRECISION ENGINEERING · COLD-CHAIN EQUIPMENT
Ammonia refrigeration unit
An open-drive screw compressor unit with adjustable capacity, economizer options and centralized control connectivity.
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Safety and reliability
Designed for high safety standards, with configurations based on GB/T 19410 and applicable European industrial product requirements and certifications.
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Low energy consumption
Equipped with a Japanese Mayekawa SRV open-drive screw compressor. An adjustable internal volume-ratio slide valve supports efficient operation across different conditions.
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High efficiency
The Mayekawa SRV open-drive screw compressor uses an adjustable internal volume ratio. An economizer supplies intermediate-stage vapor injection to increase liquid subcooling and improve system COP.
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Control system
A stable, easy-to-use controller provides an interactive interface and real-time monitoring of pressure, temperature, operating time and capacity. Connection to a central control system enables remote monitoring, operation and alarms for unattended operation.
2. Standard configurations offer manual or automatic control.
2. Seafood processing: fish, shrimp and related systems.
3. Meat processing: poultry, pork, beef and lamb processing systems.
4. Cold-chain logistics: cold stores and fresh produce storage of different sizes.
5. Chemical and pharmaceutical industries: process temperature control, pharmaceutical freeze-drying and storage.
| Item | Unit | 160 Series | ||||
|---|---|---|---|---|---|---|
| Refrigerant type | R717 | |||||
| Model | 160S | 160M | 160L | |||
| Theoretical displacement | m³/h | 415 | 519 | 622 | ||
| Capacity control range | Stepless adjustment: 10–100% | |||||
| Cooling capacity | High-temperature conditions | Kw | 494 | 618 | 740 | |
| Medium-temperature conditions | Kw | 272 | 341 | 409 | ||
| Low-temperature conditions / with economizer | Kw | 84/98 | 105/123 | 126/147 | ||
| Motor | High-temperature conditions | Kw | 90 | 110 | 123 | |
| Medium-temperature conditions | Kw | 90 | 110 | 123 | ||
| Low-temperature conditions / with economizer | Kw | 75 | 90 | 110 | ||
| Electrical supply | 380V/50HZ/3N | |||||
| Rated speed | r/min | 2960 | ||||
| Direction of rotation | Clockwise (viewed from the motor shaft end) | |||||
| Refrigeration oil | Grade | 46# | ||||
| Standard | GB/T 16630, Refrigeration Oils | |||||
| Charge quantity | Kg | 200 | 200 | 250 | ||
| Notes: 1. High-temperature conditions: +5/+35°C; medium-temperature: −10/+35°C; low-temperature: −35/+35°C. 2. Data apply to units with refrigerant-cooled oil coolers. The source specifies a suction subcooling value of 5°C. |
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| Item | Unit | 200 Series | ||||
|---|---|---|---|---|---|---|
| Refrigerant type | R717 | |||||
| Model | 200S | 200M | 200L | |||
| Theoretical displacement | m³/h | 810 | 1020 | 1210 | ||
| Capacity control range | Stepless adjustment: 10–100% | |||||
| Cooling capacity | High-temperature conditions | Kw | 976 | 1233 | 1487 | |
| Medium-temperature conditions | Kw | 539 | 681 | 821 | ||
| Low-temperature conditions / with economizer | Kw | 166/195 | 210/247 | 255/298 | ||
| Motor | High-temperature conditions | Kw | 185 | 220 | 250 | |
| Medium-temperature conditions | Kw | 185 | 220 | 250 | ||
| Low-temperature conditions / with economizer | Kw | 132 | 185 | 185/220 | ||
| Electrical supply | 380V/50HZ/3N | |||||
| Rated speed | r/min | 2960 | ||||
| Direction of rotation | Clockwise (viewed from the motor shaft end) | |||||
| Refrigeration oil | Grade | 46# | ||||
| Standard | GB/T 16630, Refrigeration Oils | |||||
| Charge quantity | Kg | 350 | 450 | 450 | ||
| Notes: 1. High-temperature conditions: +5/+35°C; medium-temperature: −10/+35°C; low-temperature: −35/+35°C. 2. Data apply to units with refrigerant-cooled oil coolers. The source specifies a suction subcooling value of 5°C. |
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| Item | Unit | 250 Series | ||||
|---|---|---|---|---|---|---|
| Refrigerant type | R717 | |||||
| Model | 250S | 250M | 250L | |||
| Theoretical displacement | m³/h | 1580 | 1980 | 2360 | ||
| Capacity control range | Stepless adjustment: 10–100% | |||||
| Cooling capacity | High-temperature conditions | Kw | 1933 | 2527 | 2897 | |
| Medium-temperature conditions | Kw | 1069 | 1343 | 1604 | ||
| Low-temperature conditions / with economizer | Kw | 334/393 | 420/493 | 504/590 | ||
| Motor | High-temperature conditions | Kw | 315 | 450* | 500* | |
| Medium-temperature conditions | Kw | 315 | 400* | 450* | ||
| Low-temperature conditions / with economizer | Kw | 250/280 | 315* | 400* | ||
| Electrical supply | 380V/50HZ/3N | 10KV/50HZ/3N | ||||
| Rated speed | r/min | 2960 | ||||
| Direction of rotation | Clockwise (viewed from the motor shaft end) | |||||
| Refrigeration oil | Grade | 46# | ||||
| Standard | GB/T 16630, Refrigeration Oils | |||||
| Charge quantity | Kg | 750 | 750 | 800 | ||
| Notes: 1. High-temperature conditions: +5/+35°C; medium-temperature: −10/+35°C; low-temperature: −35/+35°C. 2. Data apply to units with refrigerant-cooled oil coolers. The source specifies a suction subcooling value of 5°C. |
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