About Heat Transfer in an Agitated Vessel
Heat Transfer in an Agitated Vessel
In most industrial processes including reactors, heat is to be added or extracted to control the process. The addition and removal of heat is done by passing steam or water in a jacket fitted to the outside of the vessel or passing steam or cold water in helical coil inside the vessel. For effective heat transfer and even distribution of heat, the liquid inside is continuously agitated. The present set-up offers us a comparative study of Jacket & Helical coil, which can be operated simultaneously. It is a stainless steel jacketed vessel with helical coil of copper is fitted inside. The unit consists of a vessel with class wool insulation ail around. A helical coil made of copper is fixed inside the vessel. A motorized agitator is fixed at the center of the coil. The vessel is provided with an electric heater and a controller is also provided for vessel. Heater heats water in the jacket while cold water is circulated through coll. Temperature of circulated water and water In vessel Is measured and thus heat transfer coefficient at various agitator speeds can be determined.
Specifications :
Vessel approx. 20 lit. capacity, provided with glass wool insulation all around and electric heater at the bottom.Agitator 150 mm dia, with 1/8 HP motor to drive the agitator.Helical coil - 200 dia, 8 turns, made of 3/8" dia. copper tube.Controllers for heater and agitator motor.Temp. Indicator for vessel water temperature and circulated water inlet and outlet.
Service required.
- Single phase 230V, 15 A stabilized supply.Water flow at the rate of 4 to 5 lit. per min.
- Suitable drain arrangement for water.Floor area -1.5 meter. X 1 meter. X 1 meter height.
Customizable Configurations for Multifaceted ApplicationsChoose from a wide range of agitator types, vessel finishes, and heating or cooling options to precisely match your requirements. This heat transfer unit is ideal for laboratory studies, pilot plant processes, and educational demonstrations across chemical, food, and pharmaceutical industries. Every variant ensures optimal performance and flexibility.
Advanced Safety and Monitoring FeaturesSafety is integral, with over-temperature protection, emergency stop functions, and robust observation ports made from toughened glass. Temperature logging (in digital models) and clear display options (analog or digital) offer reliable monitoring and documentation, supporting research accuracy and operator peace of mind.
FAQs of Heat Transfer in an Agitated Vessel:
Q: How is heat transferred in the agitated vessel, and which agitator types are available?
A: Heat transfer is achieved through either an immersion heater or an external heating jacket. Efficient mixing and uniform temperature distribution are ensured by the use of propeller, turbine, or customized agitators, which can be tailored based on process needs.
Q: What applications is this heat transfer unit suitable for?
A: The unit is widely used in chemical, pharmaceutical, and food & dairy research for laboratory-scale as well as pilot plant experiments. It is also valuable for educational demonstrations, offering accurate and scalable heat transfer studies.
Q: Where can the vessel be installed, and what capacities are offered?
A: The vessel is designed for flexibility and can be installed in laboratories, research centers, or pilot plants. Capacities range from 1 liter to 5000 liters, with custom sizing available to meet project specifications.
Q: When is it recommended to use the cooling coil feature?
A: A cooling coil is recommended when experimental procedures require temperature reduction or rapid cooling of contents, adding to process safety and versatility. The cooling provision is optional and can be included during the initial specification or added later.
Q: How does the over-temperature protection and emergency stop feature enhance safety?
A: Over-temperature protection prevents overheating, safeguarding both the equipment and sample integrity. The emergency stop allows immediate shutdown in case of an issue, minimizing risk during operation.
Q: What is the process for customizing vessel materials and finishes?
A: Customers may select stainless steel or mild steel with appropriate lining for chemical compatibility and hygiene. Finish options, such as mirror or matte, can be specified at the time of ordering to align with process, cleanliness, or aesthetic requirements.
Q: What are the main benefits of variable agitation speed and precise temperature control?
A: Variable agitation speed (up to 2000 RPM) allows for fine-tuning mixing and heat transfer rates, while precise temperature control (0.5C accuracy) ensures reliable experiment results and product consistency.