Heat Transfer Lab Equipments

Product Details:

Product Details:

• Convective heat transfer
• Exchangeable pipe bundle as heat exchanger
• 2 heaters can be inserted in a bundle or alone
• Air flow rate adjustable
• Pitot tube and pressure measurement station to determine air velocity
• Display and control unit indicates air temperature, heater temperature and heating power

Technical Data:

 

Duct:

• Cross-section: 150x150mm
• Length: 1540mm

Fan:

• Power: 1,5kw
• Max. flow rate: 2160m³/h
• Pipe bundle
• 23 pipes (D=10mm)
• 23 pipes (D=13mm)

2 heaters:

• Power: 1x220w (D=10mm)
• Power: 1x250W (D=13mm)

Additional Information:

• Item Code: DITE007
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120days
• Packaging Details: Export Worthy

Product Details:

Heat Transfer In The Tubular Exchanger is used to demonstrate the characteristic properties of heat transfer in a tubular heat exchanger. Tubular heat exchangers represent the simplest type of heat exchanger and are the preferred solution for transferring heat with high pressure differences or between high viscosity media (sludge). This type is also used to enable the temperature of the transported medium to be kept constant. The experimental unit features a pipe-in-pipe tube as the heat exchanger, a heated tank and pump for the hot water circuit, connections for the cold water circuit, and displays and controls. Hot water in the inner tube and cold water in the outer tube flow either in a parallel flow or in a counter flow. Part of the thermal energy of the hot water is transferred to the cold water. Valves are used to adjust the flow of hot and cold water. The cold water circuit is fed from the laboratory supply.

Technical Data:

• Heat transfer in a tubular heat exchanger
• Hot water circuit with tank, heater, temperature controller and pump
• Cold water circuit from laboratory supply
• Temperature controller controls the water inlet temperature for the hot water circuit
• Parallel flow and counterflow operation adjustable
• Flow rates adjustable using valves
• 7 temperature sensors with digital display and selector for temperature measuring points
• Process schematic

Additional Information:

• Item Code: DITE002
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air Basis
• Delivery Time: 90-120days
• Packaging Details: Export Worthy

Product Details:

The heating element contained within the test vessel is an electrical resistance element whose input power is controlled by a potentiometer. A temperature indicator monitors the temperature at each thermocouple, one measuring ambient and one on the heating element. A Bourdon tube gauge mounted on the unit measures pressure from +1 bar to -1 bar and to cater for the high vacuum conditions a McLeod gauge, also panel mounted, covers the range 0 to 200 mbar absolute. The self-contained vacuum pump fitted to the equipment caters for vacuum conditions down to less than 0.1 mbar, and there is provision for an external pressure source input to be used to allow investigations up to 2 bar absolute.

 

Apparatus:

• Demonstration of the Stefan Boltzman law of radiation and determination of the constant for differing ambient conditions.
• A study of the concept and parameters of emissivity.
• An investigation of natural convection for different gases, introducing the Prandtl, Grashof and Nusselt dimensionless groups.
• A determination of the natural convection heat transfer coefficient at different pressures.
• An investigation of the effects of orientation of the heat source on the convection heat transfer coefficient.

 

Product Details:

• The apparatus consists of a self-contained bench mounted unit complete with vacuum pump.
• A heating element (which can be varied) is housed in a chamber designed to withstand vacuum pressures down to less than 0.1 mbar or, with an alternative cover, pressures up to 2 bar absolute.
• Element heating controls, pressure and temperature indications and suitable ambient medium controls for the chamber are included to enable a series of investigations to be performed on heat transfer by radiation and natural convection.

Additional Information:

• Item Code: DIHT129
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120 days
• Packaging Details: Export worthy

Product Details:

Product Details:

• Measuring a vapour pressure curve for saturated vapour
• Boiler with insulating jacket
• Temperature limiter and safety valve protect against overpressure in the system
• Bourdon tube pressure gauge to indicate pressure
• Digital temperature display

Technical Data:

• Bourdon tube pressure gauge: -1-24bar
• Temperature limiter: 200°C
• Safety valve: 20bar
• Heater: 2kW
• Boiler stainless steel: 2L

Measuring ranges:

• Temperature: 0-250°C
• Pressure: 0-20bar

Additional Information:

• Item Code: DIFM68
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By sea / air basis
• Delivery Time: 90-120 days
• Packaging Details: Export Worthy

Product Details:

The Heat Transfer Study Units has been designed to carry out experiments concerning the basic modes of heat transfer. A bench top service unit makes it possible to supply the electrical feedings and measurement facilities. Thus the student can investigate conduction, convection, radiation and their combined effects, non-steady state and measurement errors.

Product Details:

• Display and control unit (front view)
• Experimental unit (top view)
• Set-up for linear heat conduction
• Cooling water connections
• Set-up for radial heat conduction
• Measured data connection for radial heat conduction
• Power supply for radial heat conduction
• Data connection for linear heat conduction
• Power supply connection for linear heat conduction

Additional Information:

• Item Code: DITD0036
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120days
• Packaging Details: Export Worthy

Product Details:

Fluidised beds are used in a broad range of applications, e.g. for industrial drying, fluidised bed combustion or heat treatment of materials. Bulk solids are transformed from a fixed bed into a fluidised bed when fluids pass through them. In terms of fluid mechanical and thermodynamic properties, the fluidised bed behaves like an incompressible fluid. The heat transfer between hot fluid and a fixed bed occurs mainly through heat conduction. Due to the movement of the particles, the fluid and the particles are very well mixed in the fluidised bed. This enables optimum heat transfer between fluid and particles and ensures an even temperature distribution in the reactor.

Technical Data:

• Glass reactor
• Capacity: 2150mL
• Filling volume: approx. 1000mL
• Operating pressure: 500mbar
• Heating element
• Power: 0…100W
• Measuring ranges
• Temperature: 1x 0…100°C, 2x 0…400°C
• Flow rate: 0…15Nm3/h
• Pressure: 1x 0…25mbar, 2x 0…1600mbar
• Power: 0…200W
• 230V, 50Hz, 1 phase
• 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
• UL/CSA optional

Additional Information:

• Item Code: DIPM007
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/Air Basis
• Delivery Time: 90-120 days
• Packaging Details: Export Worthy

Product Details:

Shell and Tube Heat Exchange are in widespread use. The main advantages of this design are the large heat transfer surface and the compact design. Shell and tube heat exchangers are used in the chemical and pharmaceutical industries, in refineries and in process engineering plants. This part of a series of units enabling experiments to be performed on different heat exchanger types. The experimental unit is ideally suited for investigating the functioning and behaviour of a shell and tube heat exchanger in operation.

Technical Data:

• Heat transfer surface: 200cm2
• Tube bundle: Stainless steel
• Outer diameter: 6mm
• Wall thickness: 1mm
• Tubes, 7
• Shell, transparent
• Outer diameter: 50mm
• Wall thickness: 3mm

Additional Information:

• Item Code: DIHT107
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/Air Basis
• Delivery Time: 90-120 days
• Packaging Details: Export Worthy

Product Details:

A small-scale accessory designed to experimentally investigate the basic principles of radial heat conduction and to allow the thermal conductivity of the solid metal disc to be determined. The periphery of the disc is cooled by water passing through a copper tube bonded to the disc. Six type K thermocouples are positioned at 10mm radial increments from the heated centre to the periphery.

Product Details:

• A small-scale accessory designed to experimentally investigate the basic principles of radial heat conduction and to allow the thermal conductivity of the solid metal disc to be determined.
• An insulated, 110mm diameter brass disc 3.2mm thick is heated in its centre by a nominal 100W heater (operating at 240v ac maximum) which is fitted with a high temperature limit switch. The power supplied to the heater is controlled and measured by the Heat Transfer Service Unit.
• The periphery of the disc is cooled by water passing through a copper tube bonded to the disc.
• Six type K thermocouples are positioned at 10mm radial increments from the heated centre to the periphery.
• All six thermocouples plug directly into the Heat Transfer Service Unit and temperatures are displayed on its digital panel meter

Additional Information:

• Item Code: DIHT114
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120days
• Packaging Details: Export Worthy

Product Details:

It is self contained and built into a high quality instrument case designed for bench mounting with the experiment easily visible. It consists of the heat proof glass observation vessel containing the liquid and housing the nickel filament whose length and diameter can be measured, together with an additional low voltage heating element for rapid warm up. A second vessel with cooling system accommodates the second arm of the bridge, a variable voltage supply for filament heating, the AC bridge circuit, a panel mounted ammeter and voltmeter, switch gear, electrical stirring system and a 0-105ºC thermometer. A small oscilloscope necessary to balance the bridge is not included in the supply. The filament heating circuit voltage does not exceed 12V and the system has an isolated mains transformer.

 

Product Details:

• Instrument case containing all controls and electrical circuits and carrying observation vessel fitted electrodes, nickel filament and auxiliary heating element, vessel for second arm with water cooling, magnetic stirrer, electric circuit for connection to mains supply, incorporating variable transformer, isolating mains transformer, AC bridge circuit, instrument panel carrying rectifier, instruments for measurement of heater current and voltage, switchgear and socket connections for oscilloscope Supplied complete with spare nickel wire.

 

Additional Information:

• Item Code: DIHT131
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120 days
• Packaging Details: Export worthy

Product Details:

The apparatus consists of a vertical stack of specimens clamped between an electrically heated source at the top and a water cooled base, all contained within a Dewar vessel and furnished with a radiation shield and anticonvection baffle. The specimens are fitted with very small thermocouples at known distances apart and connected via a selector switch to a digital temperature readout. The heating current is supplied from a variable voltage power pack and displayed on a digital ammeter. The water cooled base is designed as a calorimeter to measure the heat flow and fitted with very accurate thermometers in the water circuit. Cooling water is supplied from the constant head water tank mounted above the Dewar vessel.

 

Experimental Capability:

• To demonstrate that heat flow is directly proportional to temperature differences between specimen faces
• To demonstrate that heat flow is directly proportional to cross sectional area
• To derive the thermal conductivity of materials of high thermal conductance
• To determine the thermal conductivity of insulation materials

 

Product Details:

• To comprise electrically heated self-clamping specimen stack, calorimeter base, Dewar vessel and cooling water supply mounted on instrument case.
• Front panel to carry a thermocouple selector switch, variable voltage power supply and digital ammeter and temperature meters.
• Two high accuracy thermometers, four NiCr/NiAl thermocouples and six various metal specimens comprising of mild steel, copper aluminium and stainless steel to complete the unit.

Additional Information:

• Item Code: DIHT130
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: By Sea/air basis
• Delivery Time: 90-120 days
• Packaging Details: Export worthy