High and Low Temperature Circulating System

Heating And Cooling Circulation Structure

High and Low Temperature Circulator

High and Low Temperature Circulating System, also known as a High and Low Temperature Circulation Pump or Heating and Cooling Integrated Unit, is specially designed for heating and cooling control of reactors.

The high and low temperature circulating systems produced by our company are mainly available in various models, including GDSZ-10L, 20L, 30L, 50L, 100L, 150L, 200L, 300L, 400L, 500L, and 1000L.

The equipment can achieve different low-temperature ranges, including -20°C, -30°C, -40°C, -60°C, -80°C, and -120°C, while the maximum heating temperature can reach 200°C.

It is widely used for temperature control of glass reactors, jacketed reactors, chemical reaction systems, pharmaceutical equipment, and laboratory/pilot-scale reaction processes, providing stable and precise heating and cooling circulation.

Detailed Description

High and Low Temperature Circulating System

The High and Low Temperature Circulating System, also referred to as High‑Low Temperature Circulation Pump or Heating‑Cooling Integrated Unit, is specially developed for heating and cooling temperature control of reactors.

Our company supplies the GDSZ series high and low temperature circulating systems with complete model options: GDSZ‑10L, GDSZ‑20L, GDSZ‑30L, GDSZ‑50L, GDSZ‑100L, GDSZ‑150L, GDSZ‑200L, GDSZ‑300L, GDSZ‑400L, GDSZ‑500L, GDSZ‑1000L.

It supports multiple low‑temperature grades: ‑20°C, ‑30°C, ‑40°C, ‑60°C, ‑80°C, ‑120°C, with a maximum heating temperature up to 200°C.

Integrating heating, cooling and circulation into one single unit, it delivers stable and precise temperature control for glass reactors, jacketed reactors, chemical reaction equipment, pharmaceutical equipment, as well as laboratory and pilot‑scale reaction systems.

Features of GDSZ Series High and Low Temperature Circulating System

Reliable Compressor System Adopts original fully‑enclosed compressors from world‑renowned manufacturers, featuring reliable quality, outstanding performance and long service life.
Intelligent Temperature Control Equipped with digital intelligent temperature controller and Pt100 platinum resistance temperature sensor for accurate temperature measurement and control. Clear display, simple operation and high control accuracy.
Integrated Heating‑Cooling Design Heating, cooling and circulation functions are integrated in one compact unit, which saves installation space and improves energy efficiency.
Corrosion‑Resistant Heating Chamber The heating chamber is made of 316 stainless steel with good corrosion resistance and high‑temperature resistance, improving the overall equipment performance.
Wide Temperature Range Working temperature range: ‑40°C ~ +200°C. It provides both heating and cooling functions and realizes rapid cooling under high‑temperature conditions, enabling continuous temperature control from 200°C down to ‑40°C.
High‑Quality Electrical Components Key electrical components including relays, capacitors and protectors are sourced from premium suppliers to guarantee stable operation and long service life.
Dual‑LED Display Controller Fitted with dual‑LED display controller, simultaneously showing: ‑ Actual temperature value ‑ Set temperature value ‑ Over‑temperature alarm value
Multiple Safety Protection Functions Built‑in comprehensive safety protections: ‑ Self‑diagnosis function ‑ High‑pressure protection switch ‑ Overload relay ‑ Thermal protection device ‑ Refrigeration compressor overload protection

System Configuration

Item	Specification
Heater Power	2.0 kW / 4.0 kW / 6.0 kW / 8.0 kW / 12.0 kW
Refrigerant	R410A
Temperature Sensor	Pt100 Platinum Resistance Sensor

Dimensions & Specifications

Item	Specification
External Circulation Port	4″ / 6″
Dimensions (mm)	630×550×1060 / 720×650×1090 / 880×880×1190
Power Supply	220V/50Hz or 380V/50Hz
Ambient Temperature Range	5°C ~ 30°C

Applications

The GDSZ high and low temperature circulating system is widely used in:

Double layer glass reactors
Chemical synthesis processes
Pharmaceutical development
Biotechnology research
New material synthesis
Laboratory experiments
Pilot-scale reaction systems

Frequently Asked Questions (FAQ)

1. What is a high and low temperature circulating system?

A high and low temperature circulating system (also called a high and low temperature circulator, heating and cooling circulator, or reactor temperature control system) is a temperature control device specially designed for reactors. It provides continuous circulation of heating or cooling fluid through the reactor jacket to achieve accurate temperature control during chemical reactions.

2. What is the temperature range of the high and low temperature circulator?

The GDSZ series high and low temperature circulating system can provide a wide temperature range from -120°C to +200°C depending on the model and configuration.

Common temperature ranges include:

-20°C
-30°C
-40°C
-60°C
-80°C
-120°C
Maximum heating temperature: +200°C

3. What equipment can be connected with the high and low temperature circulator?

The system is mainly designed for:

Double layer glass reactors
Single layer glass reactors
Jacketed reactors
Chemical reaction vessels
Laboratory reactors
Pilot-scale reaction equipment
Pharmaceutical processing equipment

It can provide stable heating and cooling circulation for various reaction processes.

4. What is the working principle of the high and low temperature circulating system?

The system uses a closed-loop circulation design. The thermal fluid inside the circulator is heated or cooled to the required temperature and then pumped into the reactor jacket.

Through continuous circulation, the system transfers heat or cold energy to the reactor material, allowing precise control of reaction temperature.

5. Can the high and low temperature circulator perform both heating and cooling?

Yes. The high and low temperature circulator integrates: