explosion-proof circulation heating thermostat

explosion-proof circulation heating thermostat with cooling

Explosion-proof circulation heating thermostat is a kind of high-precision temperature control device suitable for flammable and explosive hazardous places, with the ability of automatic temperature rise and rapid cooling two-way adjustment.

Description

Explosion-Proof Circulation Heating Thermostat

The explosion-proof circulation heating thermostat is engineered for safe and stable operation in hazardous environments. With a fully enclosed circulating structure, pressure-resistant and corrosion-resistant components, and an explosion-proof electrical system, it ensures reliable performance in explosive gas atmospheres and supports air-cooled and water-cooled condensation modes.

Features

  1. Built for hazardous environments: All electrical components, junction boxes, and operating systems comply with explosion-proof specifications, ensuring safe operation in explosive gas environments.
  2. Wide temperature range operation: Operates reliably from -40°C to +200°C, suitable for hot and cold alternating reaction needs.
  3. Integrated module design: Integrates refrigeration, heating, circulation, and intelligent control in one compact system for highly synergistic functions.
  4. Dual condensing modes: Air-cooled for independent operation, water-cooled for centralized factory cooling, both energy-saving and efficient.
  5. Precise intelligent control: Supports fixed value and multi-stage program temperature control, with a built-in 7-inch touch screen for real-time display and curve tracking.
  6. Powerful program control: Configure up to 120 groups of temperature programs, each with 100 segments. Supports linear temperature rise/fall, insulation segment conversion, and complex process control.
  7. Strong communication and integration: RS485 and MODBUS RTU protocol support, enabling access to DCS and PLC systems for remote monitoring.
  8. Multiple safety protection: Over-temperature, over-current, delayed start, high-voltage alarm, thermal protection, fault shutdown, and more for comprehensive safety.
  9. Stable fluid circulation: Liquid level monitoring and expansion tank automatic adjustment maintain heat transfer fluid stability and prevent leaks or backflow.
  10. Excellent material selection: Key components use 304 stainless steel and polymer explosion-proof materials, providing resistance to corrosion, pressure, low and high temperatures.

Working Principle

  1. Refrigeration mechanism: Uses rolling rotor compressor refrigeration; refrigerant undergoes compression, condensation, throttling, and evaporation to absorb heat and achieve rapid cooling. Condenser options include air-cooled finned and water-cooled coaxial tube heat exchangers.
  2. Heating mechanism: Flange-type thermal oil heater inserted into heat-carrying medium for rapid, uniform heating with quick response, able to maintain up to 200°C.
  3. Fluid circulation principle: High/low temperature resistant shielded pump drives heat transfer fluid in a closed high-speed loop. Expansion vessel absorbs/releases volume changes due to thermal expansion for stable operation.
  4. Control logic: PID algorithm automatically adjusts heating/cooling power for precise temperature control. Supports fixed value/program control, uniform temperature rise/fall, heat preservation, and real-time data logging. Touch screen displays set temperature, actual temperature, running time, and fault status.

Typical Application Scenarios

  1. Petrochemical field: Synthesis, purification, catalytic processes requiring reaction temperature control for hazardous materials handling.
  2. Pharmaceutical and biological reactions: Raw material synthesis, fermentation, crystallization with GMP workshop explosion-proof requirements.
  3. New energy industry: Battery aging test, superconducting material research, fuel cell cooling with explosion-proof temperature control.
  4. Paint, dyes, ink industry: Reactor temperature control or condensation collection in organic solvent environments.
  5. Scientific research/university labs: Experimental reaction systems involving combustible reagents, ensuring personnel safety.
  6. Hydrogen production/storage systems: Temperature control of hydrogen-related equipment for stable operation under high-pressure conditions.
Technical Parameters
explosion-proof circulation heating thermostat with cooling
Model HC20-18(W) HC20-11(W) HC20-7(W)
Temperature range -40°C to +200°C
Temperature stability ±0.5°C
Overall power 5.7kw 11.1kw 18.6kw
Cooling power at 200°C 12kw 6kw 3kw
Cooling power at 100°C 8.6kw 6kw 3kw
Cooling power at 25°C 5.8kw 4.5kw 2.4kw
Cooling power at -10°C 4.5kw 4.2kw 1.4kw
Cooling power at -20°C 3.5kw 3.2kw 1.2kw
Cooling power at -30°C 2kw 2kw 0.85kw
Cooling power at -40°C 1.1kw 1.1kw 0.25kw
Heater Rated Power 12kw 6kw 3kw
Cooling method air cooling or water cooling
refrigerants R404A
Circulation pump Flow rate 45L per minute 30L per minute 25L per minute
Circulation pump Pressure 1.4bar
Circulation Interface Size R3/4
Maximum viscosity of heat-carrying medium 30cp
Noise level 68db 65db 68db
communication interface usb, RS485
protection class IP20
contamination level 2
Environmental temperature 5°C to 35°C
Power supply 380Vac, 50Hz, 3 phase
Current 33A 20A 10.5A
Electrical Connection Methods three-phase four-wire system
External dimensions 755Wx1300Dx1795H mm 655Wx1000Dx1480H mm
Weight 460kg 430kg 270kg