In Practice, Different Types Of Heat Exchanger Are Used Depending On Requirements In Order To Ensure Efficient Heat Transfer And Avoid Losses.
The Trainer Is Used To Study And Compare Five Different Heat Exchangers. Both Parallel Flow And Counterflow Operation Are Demonstrated, With Their Different Temperature Curves.
In The Plate, Tubular And Shell & Tube Heat Exchangers, Heat Is Transferred Between Hot And Cold Water In Tubes Or Between Plates. In The Finned Tube Heat Exchanger, The Air Flows Around Pipes With Hot Water In Crossflow.
In T 6he Stirred Tank With Double Jacket And Coiled Tube, Either The Outer Jacket Or The Inner Coiled Tube Can Be Filled With Hot Water. A Stirring Machine Ensures That The Water Inside The Tank Is Mixed To Achieve An Even Heat Distribution.
Learning Objectives And Experiments
- Familiarisation With Heat Transfer Processes
- Heat Transfer
- Heat Conduction
- Determination Of The Heat Transfer Coefficient
- Creation Of Temperature Curves For The Different Heat Exchangers
- Parallel Flow
- Counterflow
- Cross Parallel Flow
- Cross Counterflow
- Comparison Of The Different Heat Exchangers Between Each Other
- Plate Heat Exchanger
- Tubular Heat Exchanger
- Shell & Tube Heat Exchanger
- Finned Tube Heat Exchanger
- Stirred Tank With Double Jacket And Coiled Tube
Specification
- Investigation And Comparison Of Five Different Heat Exchanger Types
- Parallel Flow Or Counterflow Can Be Set Via Valves
- Flow Rates Can Be Adjusted Via Valves
- Electromagnetic Flow Meter For Hot And Cold Water
- Portable Differential Pressure Sensor For Water
- Fixed Differential Pressure Sensor For Air, To Determine The Volumetric Flow Rate
- Digital Displays For Temperature, Pressure Differences And Flow Rate
- Hot Water Generator And Water Chiller Available
Technical Data
- Plate Heat Exchanger, (Water-Water)
- Number Of Plates: 10
- Heat Transfer Area: Approx. 0,26m2
- Output: 15kw
- Tubular Heat Exchanger (Water-Water)
- Heat Transfer Area: 0,1m2
- Shell & Tube Heat Exchanger (Water-Water)
- Output: 13kw
- Finned Tube Heat Exchanger (Water-Air)
- Heat Transfer Area: Approx. 2,8m2
- Fan Max. Flow Rate: 780m3/H
- Fan Max. Pressure Difference: 430Pa
- Stirred Tank With Double Jacket And Coiled Tube (Water-Water)
- Double Jacket Heat Transfer Area: 0,16m2
- Coiled Tube Heat Transfer Area: 0,17m2
Measuring Ranges
Differential Pressure:
- 1x 0…10mbar (Air)
- 1x 0…1000mbar (Water)
- Flow Rate: 2x 0…3m3/H
- Temperature: 10x 0…100°C
- 230V, 50Hz, 1 Phase
- 230V, 60Hz, 1 Phase; 120V, 60Hz, 1 Phase
