Screw Chiller Compressor Semi-Hermetic Water Cooled Condensing Unit

• Customization: Available
• After-sales Service: Online Support
• Warranty: 1 Year
• Model NO.: Water -Cooled Condensing Unit
• Type: Water-Cooled
• Cooling Method: Water-cooled
• Unit Structure: Integral
• Selected Voltage: 220V/380/440/50/60Hz
• Compressor Number: Customized
• Noise Level: Ordinary
• Application Fields: Customized
• Condition: New
• Frequency: 50/60Hz
• Temperature Range: High, Medium to Low Temperature
• Air Condenser: Finned Type
• Application: Fruit/Vegetable/Meat/Seafood/Ice/Chemical/Medicine
• Nominal Power: 2-1000HP
• Refrigeration Oil: Poe, 3GS
• Condenser: Shell and Tube Condenser
• Transport Package: Customized
• Specification: Customized
• Trademark: jingyuan
• Origin: China
• Production Capacity: 100000

Product Description

Product Description

Introduction:

A Screw Water-Cooled Chiller is a large central air-conditioning unit centered around a screw compressor. It uses a refrigeration cycle to cool circulating water into chilled water (e.g., 7°C supply / 12°C return) for air-handling terminals. Known for high energy efficiency, reliability, and long service life, it offers large single-unit capacity (often 100-1500+ RT) and superior part-load performance via slide valves or VFDs. Key components include the screw compressor, evaporator, condenser, expansion valve, and control system, requiring an external cooling tower. Primarily used in large buildings and industrial process cooling.

Key Points:

Core: Screw Compressor
Function: Produces Chilled Water
Features: High Efficiency, Reliable, Large Capacity, Excellent Part-Load
Components: Compressor, Evaporator, Condenser, Expansion Valve, Controls
Application: Large-Scale HVAC / Industrial Cooling

Definition:

Key Components:

A screw water-cooled chiller is a highly efficient and reliable core refrigeration unit used in large central air-conditioning systems. It utilizes a screw compressor as its primary driving component within a vapor-compression refrigeration cycle. Its purpose is to cool down ambient-temperature water (typically circulating water) into chilled water (e.g., 7°C supply) which is then pumped to air-handling terminals (such as fan coil units or air handling units - AHUs) to absorb heat. The warmed water returns to the chiller (e.g., 12°C return) to be cooled again. The condensation heat rejected by the chiller is transferred to a separate cooling water loop and ultimately dissipated to the atmosphere via a cooling tower.

Core Working Principle:

Compression: The screw compressor (single-screw or twin-screw) draws in low-temperature, low-pressure refrigerant vapor from the evaporator. The intermeshing rotation of the male and female rotors compresses the gas into a high-temperature, high-pressure vapor.
Condensation: The high-pressure, hot refrigerant vapor enters the condenser. Heat is rejected to external cooling water flowing through the condenser tubes, causing the refrigerant to condense into a high-pressure liquid. The cooling water heats up and is pumped to the cooling tower for heat dissipation.
Expansion: The high-pressure liquid refrigerant passes through an expansion device (such as a thermostatic expansion valve or electronic expansion valve), where its pressure and temperature drop significantly, resulting in a cold, low-pressure mixture of liquid and vapor.
Evaporation: This low-pressure mixture enters the evaporator. It absorbs heat from the chilled water (or process water) circulating over the evaporator tubes, causing the refrigerant to evaporate. The chilled water is thus cooled to the desired temperature. The resulting low-pressure vapor is drawn back into the screw compressor to repeat the cycle.various styles to meet your needs.

Compressor: The heart of the unit. Typically semi-hermetic or hermetic screw type, known for high efficiency, relatively low vibration and noise, robust reliability, reduced maintenance needs (compared to reciprocating), long service life, and large single-unit capacity.
Condenser: Usually a shell-and-tube heat exchanger where refrigerant condenses on the shell side, and cooling water flows through the tubes.
Evaporator: Also commonly a shell-and-tube heat exchanger where refrigerant evaporates inside the tubes, absorbing heat from the chilled water flowing over the tubes on the shell side.
Expansion Device: Thermostatic expansion valve (TXV), electronic expansion valve (EEV), or orifice.
Control System: Sophisticated microprocessor controller for automatic operation, capacity regulation, safety protection, monitoring, and communication.
Ancillary Components: Oil separator, oil cooler, oil pump (on some models), filter-drier, sight glass, high/low pressure switches, motor protection devices, flow switches, various sensors and valves.
Main Characteristics:

High Efficiency & Reliability: Screw compressor technology is mature, offering high volumetric efficiency and excellent part-load performance (especially between 40-80% load). They run smoothly and reliably with low vibration and long service life (often 20+ years).

Compact & Stable: More compact footprint and lower vibration/noise compared to reciprocating chillers, reducing structural requirements. Fewer moving parts mean generally lower maintenance needs (though regular professional maintenance is still essential).
Broad Application Range: Capable of producing chilled water across a wide temperature range (e.g., 5°C - 20°C), suitable for comfort cooling and various industrial process cooling applications.

Custom Voltage Solutions for Global Markets

Global Compatibility, :Does your equipment require specific voltage (like 110V/60Hz for North America or 220-240V/50Hz/60Hz/440V/60Hz for EU & UK)? We specialize in manufacturing products with custom
voltage specifications tailored to your exact target market requirements. Say goodbye to compatibility concerns .
 styles to meet your needs.

Specification

CONFIGURATION
scroll compressor	Scroll Type	Semi-Hermetic Reciprocating Type	Screw Type
	scroll compressor	semi-hermetic reciprocating compressor crankcase heater differential oil pressure switch	screw compressor ECO (low temperature application) air/water cooled oil cooler oil way accessories safety valves
	OPEN type air-cooled condenser,liquid receiver with shut-off valve vibration eliminator,vibration eliminator solenoid valve, filter drier and sight glass in liquid line high and low pressure gauges high and low pressure controller
Optional	air cooled condenser fan speed control control panel with complete wiring (main switch, compressor contactor, etc.) check valve in liquid line oil separator in discharge line accumulator in suction line stainless steel ECO sound insulation for compressor heaters for low ambient temperature

Company Profile

 Business Scope

Jingyuan (Foshan) Refrigeration Equipment Co., Ltd. is a comprehensive enterprise specializing in the design, R&D, manufacturing, and engineering services of semi-hermetic piston compressors, refrigeration units, and customized systems. We adhere to the principles of precision craftsmanship, advanced technology, and customer-centric service, offering standardized, energy-saving, and eco-friendly solutions tailored to diverse industry needs. With over a decade of experience, we are committed to our operational ethos of "Integrity, Quality, Competitive Pricing, and Shared Success," supported by comprehensive after-sales services.

Key Advantages:

Core Advantage: Superior Compressor Technology

 

High Efficiency & Energy Savings: Renowned for high COP/EER values, whether piston, screw, or scroll compressors, typically exceeding industry standards. This directly reduces the core operating cost of cold storage: electricity.

 

Reliability & Long Service Life: Utilizes top-grade materials and precision manufacturing processes (e.g., high-quality cast iron housing, hardened crankshafts, specialized valve plate design). Robust construction ensures high reliability under harsh conditions and continuous operation, delivering long mean times between failures (MTBF).

 

High-Efficiency Motor Technology: Optimized motor design offers higher efficiency with lower heat generation, further enhancing overall unit efficiency and reliability.

 

Precise Control Capability: Excelling particularly with inverter compressors, offering strong stepless capacity modulation. This enables exact matching of actual cold storage load, avoiding oversized units operating below capacity, achieving peak energy savings and stable temperature control.

 

Broad Refrigerant Compatibility: Capable of efficient and safe operation with various mainstream refrigerants (e.g., R404A, R507A, R134a) and next-generation environmentally friendly refrigerants, providing flexible choices to meet current and future environmental regulations (e.g., GWP restrictions).

 

High Reliability & Durability

    Designed for Industrial Applications: Cold storage typically requires 24/7 continuous operation. The unit design fully considers the demanding requirements of high-load, long-duty-cycle operation.

 

Superior Component Quality: Core components (compressors, oil separators, valves, etc.) all utilize high-quality products,  ensuring overall system stability and lifespan.

 

Stringent Testing Standards: Undergoes rigorous testing exceeding industry standards before leaving the factory, ensuring stable and reliable operation under various operating conditions.

 

Strong Fault Tolerance: Excellent oil return control, liquid slugging protection, overheating protection, and other measures effectively enhance resilience against adverse operating conditions.

 styles to meet your needs.

FAQ

1. Q: Are you a manufacturer?

 A: Yes, we are manufacturer. Non-standard customization and OEM service are both welcomed and available.

2.Q: How to buy?

A: Please contact us by email or online at first, and then we will offer our proposal and quotation based on your demand.

3. Q: How to pay?

A: 40% of total amount to be paid before production, and the balance payment before shipment.

4. Q: How to ship?

A: We work with an experienced shipping agent who could arrange your delivery on the cheapest and fastest way. Our closest port is guangzhou.

5.Q: What about the delivery date?

A: 10-30 days, depends on the order.

6. Q: What about the maintenance?

 A: All the products are tested before shipment, and maintenance is easy. We provide patient pre-sale service and considerate after-sale service.