Reservoir / Pump Assembly for Chiller Systems

Product Specifications

Technical details and manufacturing context for Reservoir / Pump Assembly

Definition

The Reservoir / Pump Assembly is a component of a chiller unit that integrates a storage reservoir for liquid refrigerant with a circulation pump. Its primary function is to maintain proper refrigerant levels, ensure consistent flow to the evaporator and condenser, and help manage pressure differentials throughout the cooling cycle. The assembly is designed for use in machinery and equipment manufacturing, specifically within chiller systems. It is available in configurations using stainless steel, cast iron, or copper alloys, with material selection depending on the application and refrigerant compatibility. Key parameters include rated flow rate (5–100 L/min), maximum head (10–50 m), operating pressure (1.0–1.6 MPa), operating temperature (-40–85 °C), reservoir capacity (10–200 L), motor power (0.5–7.5 kW), supply voltage (220–480 V AC), frequency (50–60 Hz), ingress protection (IP54–IP65), material grade (304–316 SS), weight (30–150 kg), and dimensions (600×400×800 to 1200×800×1500 mm). These values are reference ranges and must be verified for the specific model and application. Relevant standards for verification include ISO 9906 for hydraulic performance, IEC 60034 for motor performance, IEC 60038 for voltage and frequency, IEC 60529 for ingress protection, and ASTM A240 for stainless steel material. The assembly is a critical part of the chiller's refrigerant circuit, and proper selection and maintenance are essential for reliable operation. Always confirm model-specific specifications and compliance with the legal manufacturer or supplier before procurement.

Working Principle

The reservoir stores liquid refrigerant and provides a buffer for system volume changes. The pump draws refrigerant from the reservoir and circulates it through the chiller's heat exchange components (evaporator and condenser) at controlled pressures and flow rates. This circulation facilitates the refrigeration cycle by ensuring consistent refrigerant flow and pressure management. The pump's motor drives the impeller, creating the necessary pressure difference to move refrigerant through the system. The reservoir also helps separate vapor from liquid, improving system efficiency. Proper operation depends on correct sizing of the pump and reservoir relative to the chiller's cooling capacity and system piping.

Common Materials

Stainless steel, Cast iron, Copper alloys

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Flow Rate	5–100 L/min	Select based on chiller cooling capacity.ISO 9906
Maximum Head	10–50 m	Ensure sufficient pressure for system piping.ISO 9906
Operating Pressure	1.0–1.6 MPa
Operating Temperature	-40–85 °C	Outside range may affect seal integrity.
Reservoir Capacity	10–200 L	Larger volume improves thermal stability.
Motor Power	0.5–7.5 kW	Match to required flow and head.IEC 60034
Supply Voltage	220–480 V AC	Three-phase; verify phase and frequency.IEC 60038
Frequency	50–60 Hz	Must match motor rating.IEC 60038
Ingress Protection	IP54–IP65	Higher IP for outdoor or washdown.IEC 60529
Material	304–316 SS	316 for corrosive refrigerants.ASTM A240
Weight	30–150 kg	Affects installation and support.
Dimensions (L×W×H)	600×400×800–1200×800×1500 mm	Check clearance for maintenance.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Reservoir Tank
Stores liquid refrigerant and provides volume compensation

Material: Stainless steel
Centrifugal Pump
Circulates refrigerant through the chiller system

Material: Cast iron with bronze impeller
Inlet/Outlet Manifold
Connects reservoir and pump to chiller piping

Material: Brass or stainless steel
Mounting Bracket Part
Secures the assembly to the chiller frame

Material: Steel
Pump Motor
Turns the impeller; it is what actually creates the circulating pressure.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Chiller Unit

View system integration details

Manufacturers of Reservoir / Pump Assembly

Manufacturer profiles associated with Reservoir / Pump Assembly.

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Frequently Asked Questions

What is the purpose of the reservoir in the assembly?

The reservoir stores liquid refrigerant and provides a buffer for volume changes in the system, helping to maintain stable refrigerant levels and improve thermal stability.

How do I select the correct pump flow rate?

The required flow rate depends on the chiller's cooling capacity and system design. Refer to the rated flow range (5–100 L/min) and verify with the manufacturer based on your specific application.

What standards apply to this component?

Relevant standards include ISO 9906 for hydraulic performance, IEC 60034 for motors, IEC 60038 for voltage/frequency, IEC 60529 for ingress protection, and ASTM A240 for stainless steel. These are verification references, not proof of certification.

What maintenance signals indicate a problem?

Signs of wear or failure include unusual noise, reduced flow, pressure fluctuations, leaks, or motor overheating. Regular inspection of seals, impeller, and motor is recommended. Always follow manufacturer guidelines.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 25 bar (max operating pressure)
flow rate:	Up to 300 L/min (depending on pump model)
temperature:	-40°C to +120°C
slurry concentration:	Not applicable - designed for clean refrigerant systems only

Reservoir / Pump Assembly

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards