Refrigerated heating circulator HRHC-M series

for high temperatures

Product overview
Refrigerating and Heating Circulator, Temperature Control Unit. Maximum process stability and reproducibility. Temperature control system for many pilot and industrial production reactors. The TCU integrates existing heating (steam, heating water) and cooling (refrigeration, cryogenic liquids) infrastructure into a single fluid secondary-loop system so that only one heat-transfer fluid circulates into reactor jackets (the primary media do not flow directly into the jacket). The whole reaction process temperature is controlled by the system operation.

Advantages & Functions

• Working temperature range from -25°C to 200°C (other ranges available; up to -50°C to 250°C as a wider option).
• Centralized control of 2–20 reactors; each reactor and its jacket temperature can be set independently. One system can control multiple reactors to their target temperatures.
• Maximum process stability and reproducibility.
• Under system control, improved energy savings: freezing medium and heating medium flow to reactor jackets are accurately controlled.
• Previously unachievable performance for complex multi-reactor processes.
• High-accuracy and intelligent temperature control.
• Use of plate heat exchanger and piping heater to improve heating and cooling rates.
• Ultra-high temperature flexible cooling technology: processes using cooling water to cool from 250°C avoid steam formation; water temperature rise controlled within ~4°C to reduce fouling risk of heat exchangers.
• Factory existing refrigeration and heating systems can be used together with this system to reduce input cost.
• Increased thermal fluid life.
• 10-inch TFT touchscreen with graphic display.
• Comprehensive warning and safety functions.
• USB interfaces, RS485 interfaces and industrial control configuration software available.
• Optional explosion-proof design per customer requirements.

Key system description
The TCU implements a single-fluid secondary-circulation temperature control concept: a closed thermal fluid loop circulates through heat exchangers and reactor jackets. The system can include integrated electric auxiliary heating, proportional control valves for precise flow control, PLC or adaptive PID controller and multi-point temperature feedback (inlet/outlet of heat-transfer medium and reactor material temperature via PT100). Full closed-pipe design and modular heat transfer interfaces allow extension of heat transfer modules per demand.

1. Secondary circulation unit — single-fluid temperature control system (table content shown as rows)
Model: HRHC-M35N / HRHC-M35NS / HRHC-M35NH / HRHC-M35NSH ; HRHC-M50N / HRHC-M50NS / HRHC-M50NH / HRHC-M50NSH ; HRHC-M80N / HRHC-M80NS / HRHC-M80NH / HRHC-M80NSH ; HRHC-M125N / HRHC-M125NS / HRHC-M125NH / HRHC-M125NSH ; HRHC-M200N / HRHC-M200NS / HRHC-M200NH / HRHC-M200NSH
Medium temperature range: -120 ~ 250°C (set max temp according to supplier heating/cooling source). -40 ~ 135°C (max range operable using glycol-water formula).
HRHC-M N: one cooling heat exchanger with proportional valve control and built-in expansion tank; uniform medium input to reactor jackets.
HRHC-M NS: HRHC-M N plus one heater to reduce high temperature quickly.
HRHC-M NH: HRHC-M N plus electrical heating function.
HRHC-M NSH: HRHC-M N plus heater and electrical heating function.
Tank capacity: 100L / 200L / 280L / 390L / 500L (per model).
Heat exchanger area: 3.5 m2 / 5 m2 / 8 m2 / 12.5 m2 / 20 m2 (per model).
Electric heating function (H): 25 kW / 35 kW / 50 kW / 65 kW / 80 kW (with H suffix = heating included).
Control mode: PID adaptive controller, special dynamic control calculation, LABFREEZ controller.
Communication: MODBUS RTU RS485; optional Ethernet or RS232 interfaces.
Temperature control selection: material control temperature.
Temperature feedback: three points — inlet and outlet of medium and material in reactor (external temperature sensor) using PT100.
Material temperature feedback interface: PT100 or 4–20 mA or communication-based input.
Material temperature accuracy: typically ±1°C (varies by model; some larger models ±2°C).
Circulating pump: examples 200 L/min @ 2.5 bar, 250 L/min, 400 L/min, 500 L/min, 750 L/min (model-dependent).
Input/display: 7-inch color touch screen (temp curve display) — (product page also references 10-inch TFT elsewhere for higher models).
Security/protection: self-diagnosis; freezer overload protection; high pressure switch; overload relay; thermal protection; low liquid level protection; high temperature protection; temperature fault protection.
Proportional control valve: electric proportional valve, control signal 4–20 mA.
Piping material: SUS304 stainless steel.
Interface sizes (examples): DN40, DN50, DN65, DN80 (model-dependent).
Installation dimensions (examples): 1000×1200×1750 mm; 1250×1250×2000 mm; 1500×1500×2050 mm; 2050×1450×2050 mm (model-dependent).
Power examples: AC 380V 50Hz 1.6 kW (max) up to larger model maxima; suffix H power supply examples: AC 380V 50Hz up to 26.6 kW / 37.1 kW / 52.5 kW / 70.7 kW / 87.7 kW (model-dependent).
Shell material: SUS304.

2. Coolant temperature control system (table content shown as rows)
Model examples: HRHC-MC35N / HRHC-MC35NS / HRHC-MC35NH / HRHC-MC35NSH ; HRHC-MC50N / HRHC-MC50NS / HRHC-MC50NH / HRHC-MC50NSH ; HRHC-MC80N / HRHC-MC80NS / HRHC-MC80NH / HRHC-MC80NSH ; HRHC-MC125N / HRHC-MC125NS / HRHC-MC125NH / HRHC-MC125NSH ; HRHC-MC200N / HRHC-MC200NS / HRHC-MC200NH / HRHC-MC200NSH
Medium temperature range: -45 ~ 250°C (set max per supplier heating/cooling source). -40 ~ 135°C (glycol-water option).
HRHC-MC N: main cold/heat source regulated by proportional control to supply a controlled heat exchanger to reactor jackets.
HRHC-MC NS: add one set heater to reduce high temp.
HRHC-MC NH: add electrical heating function.
HRHC-MC NSH: add heater and electrical heating function.
Heat exchanger area examples: 3.5 m2 / 5 m2 / 8 m2 / 12.5 m2 / 20 m2.
Electric heating H examples: 25 kW / 35 kW / 50 kW / 65 kW / 80 kW (with H = heating included).
Control mode: PID adaptive controller with LABFREEZ dynamic control calculation.
Communication: MODBUS RTU RS485; optional Ethernet/RS232.
Temperature feedback and accuracy: three-point feedback (medium inlet/outlet, reactor material PT100); material accuracy typically ±1°C to ±2°C depending on model.
Circulating pump examples: 150 L/min to 750 L/min at 2.5 bar depending on model.
Input/display: 7-inch color touch screen with temp curve display.
Security/protection: self-diagnosis, overload protections, high-pressure switch, thermal protection, low-level and fault protections.
Piping/materials/interfaces/installation/power/shell: SUS304 piping and shell; interface sizes DN40–DN80; installation and power dimensions vary by model (see model-specific rows above).

Technical specifications

• Series / Model Family: HRHC-M Series (SKU shown as HRHC-M Series).
• Function: Refrigerating and heating circulator; temperature control unit for multiple reactors (2–20 reactors centralized).
• Temperature ranges: Typical ranges include -120 to 250°C (max depending on external heat/cool sources); common workable ranges -45 to 250°C or -40 to 135°C with glycol-water.
• Tank capacity examples: 100 L, 200 L, 280 L, 390 L, 500 L.
• Heat exchanger area examples: 3.5 m2, 5 m2, 8 m2, 12.5 m2, 20 m2.
• Electric heating (option H): model-dependent (e.g. 25 kW up to 80 kW); H-suffix overall power examples up to ~87.7 kW for largest configs.
• Control: PID adaptive controller, LABFREEZ dynamic algorithm; recipe management and production process record capability.
• Communication: MODBUS RTU (RS485), optional Ethernet/RS232.
• Temperature feedback: PT100 sensors; inlet, outlet and reactor material probe; material feedback via PT100 or 4–20 mA.
• Material temp. accuracy: typically ±1°C (some larger models ±2°C).
• Circulating pump flow examples: 150–750 L/min (2.5 bar), model-dependent.
• User interface: Color touch screen (7-inch or 10-inch TFT on some models) with graphical/temp-curve display.
• Safety: overload, high-pressure, thermal, low-liquid-level protections; self-diagnosis.
• Valves: electric proportional control valve, signal 4–20 mA.
• Piping & shell: SUS304 stainless steel.
• Interface sizes: DN40 / DN50 / DN65 / DN80 depending on model.
• Installation footprint examples: from ~1000×950×1750 mm up to ~2050×1450×2050 mm depending on model.
• Supply power examples: AC380V 50Hz; required power depends on model and options (H suffix increases max power considerably).