Heat exchange experimental device
This is a tabletop experimental device that demonstrates heat transfer (overall heat transfer) between adjacent fluids and verifies the effects of flow rate and temperature difference. The heat exchange experimental device TD360 offers optional (sold separately) experimental items including four types of double-pipe, plate, and multi-tube cylindrical heat exchangers, as well as a tank jacket (coil) type heat exchanger, with one of these being installed for experiments. The hot water system and cooling system are composed of a flow control valve and flow meter, with temperatures and flow rates displayed digitally. The hot water system consists of a PID-controlled tank with a heater, a pump, and a water level gauge, ensuring stable temperature and flow rate. The digital display shows the inlet and outlet temperatures of hot and cold water, the temperature of thermocouples integrated into the heat exchanger (sold separately), and the flow rates of hot and cold water, allowing experiments to be conducted without a PC (sold separately). The four types of heat exchangers (sold separately) have the same heat transfer area (0.02 m²) and wall thickness (1 mm), making it easy to compare each exchanger.
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basic information
TD360 Specifications Dimensions and Weight: W760 x D610 x H600mm, approximately 40kg Flow Adjustment: Needle valve type Flow Measurement: Digital display for hot and cold water flow, turbine type Thermocouple: K-type thermocouple, digital display, 4 locations (inlet and outlet for hot and cold water) Others: Socket for TD360d (sold separately) stirrer power supply (DC12V) on the back Operating Temperature Range: +5℃ to +40℃ Required Equipment Power Supply: Single-phase AC200V/15A, 50/60Hz Water Supply: Low impurity water source (tap water), drainage facilities, flow rate of 5L/min or more (water pressure 1–3 bar) Water Supply Temperature: 5℃ to 20℃ *Outside this temperature range, it is not possible to obtain appropriate experimental data according to the instruction manual. Hot Water System Hot Water Tank: 7.5kW Heater: 2.75kW Heater Tank Temperature: Maximum 60℃ *Varies depending on the surrounding environment Tank Water Level Display: Full, Half, Empty display Maximum Flow Rate: Approximately 4L/min Water Replenishment: Electromagnetic valve type Temperature Control: PID control Safety Mechanism: Low water level and over-temperature protection device included
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Applications/Examples of results
Main experimental content: Double-tube, plate-type, and multi-tube cylindrical heat exchanger experimental items Calculation of thermal conductivity from the heat transfer and average temperature efficiency when varying flow rates (in parallel and counterflow) Calculation of thermal conductivity from the heat transfer and average temperature efficiency when varying temperatures (in parallel and counterflow) Calculation of heat transfer coefficient, overall heat transfer coefficient (in parallel and counterflow), heat flux, film heat transfer coefficient, and Reynolds number Calculation of logarithmic mean temperature, logarithmic mean heat transfer area, and heat balance Tank jacket (coil) type heat exchanger experimental items Calculation of thermal conductivity from the heat transfer and logarithmic mean temperature in a tank with constant volume (jacket heating or coil heating) Calculation of heat transfer and average temperature efficiency at a constant flow rate (jacket heating or coil heating) Calculation of logarithmic mean temperature and thermal conductivity during tank stirring, and comparison of average temperature efficiency based on stirring power (%) Delivery achievements: Nagoya University, Minami Shinshu Technical College, Suzuka National College of Technology, Nara National College of Technology, Yamagata Technical High School.
Detailed information
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Custom calculation formula input and layout changes are possible. VDAS-F (sold separately) software reference screen.
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【TD360a Double-tube Heat Exchanger】 This is the simplest type of heat exchanger. It has a double structure consisting of a φ30mm transparent tube and a φ12mm stainless steel tube, with hot water flowing through the inner stainless steel tube and cold water flowing in parallel or counterflow in the outer tube. This heat exchanger connects two sets of the same components with an intermediate pipe, allowing for temperature measurements at two intermediate points and four inlet/outlet points. This setup provides clearer experimental results regarding the temperature changes of the fluid during heat conduction.
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TD360b Plate Heat Exchanger This is a heat exchanger separated into five layers by stainless steel plates. Connection ports are provided on the sides of the plates and gaskets to supply hot and cold water, allowing heat to be transferred between the plates. The surface of the plates is designed with indentations and other features to enhance thermal conductivity. Plate heat exchangers are compact, making them suitable for applications in products with limited space.
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TD360c Multi-tube Cylindrical Heat Exchanger This is a commonly used heat exchanger. It is compact and can be used at high pressures compared to other mechanisms. The outer transparent tube surrounds several small stainless steel tubes, allowing cold water to flow inside the transparent tube while hot water flows inside the stainless steel tubes, facilitating heat conduction. Additionally, the adjustment plates around the stainless steel tubes control the flow of water.
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TD360d Tank Jacket (Coil) Type Heat Exchanger This is a simulation of a heat exchanger widely used in process industries. It allows for experiments on heat conduction by supplying hot water to the tank jacket for use as a tank jacket type heat exchanger, or by supplying hot water to the coil inside the tank for use as a tank coil type heat exchanger. The included thermocouple measures the temperature inside the tank. Additionally, the electric stirrer will clarify how stirring affects heat transfer.
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Megakemu designs, manufactures, and imports various experimental and practical equipment for universities, junior colleges, technical colleges, high schools, and vocational schools across the country. While the world has made advancements in various fields, it seems that our Earth's environment is being disrupted by ourselves and is approaching its limits. The world is seeking new Japanese technologies that coexist with the Earth's environment.
