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
ModelHC20-18(W)HC20-11(W)HC20-7(W)
Temperature range-40°C to +200°C
Temperature stability±0.5°C
Overall power5.7kw11.1kw18.6kw
Cooling power at 200°C12kw6kw3kw
Cooling power at 100°C8.6kw6kw3kw
Cooling power at 25°C5.8kw4.5kw2.4kw
Cooling power at -10°C4.5kw4.2kw1.4kw
Cooling power at -20°C3.5kw3.2kw1.2kw
Cooling power at -30°C2kw2kw0.85kw
Cooling power at -40°C1.1kw1.1kw0.25kw
Heater Rated Power12kw6kw3kw
Cooling methodair cooling or water cooling
refrigerantsR404A
Circulation pump Flow rate45L per minute30L per minute25L per minute
Circulation pump Pressure1.4bar
Circulation Interface SizeR3/4
Maximum viscosity of heat-carrying medium30cp
Noise level68db65db68db
communication interfaceusb, RS485
protection classIP20
contamination level2
Environmental temperature5°C to 35°C
Power supply380Vac, 50Hz, 3 phase
Current33A20A10.5A
Electrical Connection Methodsthree-phase four-wire system
External dimensions755Wx1300Dx1795H mm655Wx1000Dx1480H mm
Weight460kg430kg270kg