Heat Transfer Lab Equipments

Pioneers in the industry, we offer guarded plate apparatus, emissivity measurement apparatus, thermal conductivity, thermal conductivity of insulating powder, hc refrigeration test rig and thermal conductivity of metal rod from India.

Guarded Plate Apparatus

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Approx. Rs 38,000 / Number

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To determine the thermal conductivity of liquids by guarded hot plate. The apparatus consists of a main heater and a radial guard heater sandwiched between copper plates. The specimen in the form of slabs of equal thickness are placed on either sides of heaters and cooling plates through which water is circulated are on the other sides of the specimen. The radial guard heater ensures all heat of the main heater to pass axially through the specimens which is collected by cooling plates.

Features:

  • Reckoned for its smooth functioning
  • Completely tested
  • Competitive prices

Additional Information:

Item Code: ELSHADDAI-HT-014

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Emissivity Measurement Apparatus

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Approx. Rs 38,000 / Number

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Emissivity Measurement Apparatus is the client-centric approach and market enterprise has betrothed our firm to manufacture, export and supply an excellent quality assortment of Emissivity Measurement Apparatus which is used to measure the property of emissivity of the test plate surface at various temperatures. The provided apparatus is highly applauded in the market for its accurate results, high performance and good service backup. The offered apparatus is manufactured by our dexterous professionals using superior grade components and leading edge techniques in adherence with international quality standards.


Additional Information:

Item Code: ELSHADDAI-HT-008

Minimum Order Quantity: 1 Number

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Thermal Conductivity

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The Apparatus follows widely accepted theory of heat conduction in liquids based on Debye’s concept in which the hydroacoustic vibrations (phonons) of a continuous medium(base fluid) are responsible for the heat transfer in liquids. Based on this heat transfer mechanism,Bridgman has obtained a formula,characterized by the direct proportionality between thermal conductivity and sound velocity in pure liquids.

Other properties possible with this Apparatus

  • Adiabatic Compressibility
  • Acoustic Impedance
  • Characterization of Nanofluids/Suspensions
  • Characterization of Ferro/Magnetic Nanofluids
  • Intermolecular Free Length

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Thermal Conductivity Of Insulating Powder

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Approx. Rs 38,000 / Number

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Product Details:

Minimum Order Quantity1 Number
BrandELSHADDAI
UsageLaboratory, EDUCATIONAL INSTITUTIONS

Specifications:

  • Inner sphere : 100mm dia, copper
  • Outer sphere : 200mm dia, copper
  • Heater : Round type, Mica heater 100mm
  • Digital Voltmeter : 0-300V
  • Digital Ammeter : 0-20A
  • Digital Temp Indicator: 0-1200°c (12 channel) with selector switch
  • Thermocouples : (K-type)-sensors 12 nos.
  • Insulating powder : MGO powder
  • Switch : 15 amps

Additional Information:

Item Code: ELSHADDAI-HT-006

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HC Refrigeration Test Rig

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Approx. Rs 85,000 / Number

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Specifications:

  • Compressor : Brand new 1 HP
  • Condenser fan : Air cooled
  • Thermostat : 5 degree C to 15 degree C
  • Evaporator : 10 Liters capacity
  • Pressure &Vacuum Compound gauge : any available brand
  • Temperature Measurement : Digital Temperature indicator is provided to measure temperature of refrigerant and water.
  • Voltmeter : 0-300 V
  • Ammeter : 0-20 A

Additional Information:

Item Code: ELSHADDAI-HT-002

Minimum Order Quantity: 1 Number

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Thermal Conductivity of Metal Rod

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Approx. Rs 45,000 / Number

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The apparatus consists of a brass rod, one end of which is heated by an electric heating coil while the other end projects into the cooling water jacket. The rod is insulated with glass wool to minimize the radiation and convection loss from the surface of the rod and thus ensure nearly constant temperature gradient throughout the length of the rod. The temperature of the rod is measured at five different locations along the length. The heater is provided with a dimmer stat for controlling the heat input. Water is circulated through the jacket and its flow rate and temperature rise can be measured


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Air Compressor Test Rig

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Technical Specifications:

  • Compressor : Double Stage, Double Cylinder.
  • Capacity 6.9 CFM max.
  • Working Pressure : Max. 7 kg/cm2
  • Motor : 2 HP Crompton/Standard make, Swinging Field type
  • Spring Balance : 10 kg, Dial type
  • Flow Measurement : Orificemeter with Manometer
  • Temperature Measurement : RTD PT-100 type sensor (4 nos.)
  • Air Tank : Capacity 150 Ltrs. with safety valve, shut off valve
  • Pressure Gauge : Bourdon Type
  • RPM measurement : RPM Indicator with Proximity sensor
  • MCB : For overload protection

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Air-Conditioning Test Rig

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This Laboratory scale working model housed on a M.S. Square tube frame further mounted on a wheels (CI) with instrumentation panel is used

i) To study the Vapour Compression Cycle
ii) To calculate co-efficient to performance (COP)
iii) To evaluate tonnage capacity
iv) To study humidification and dehumidification.


01. Hermitically Sealed Compressor
Capacity: 1.0 Ton
02. Air Cooled Condenser
Capacity: 1.0 Ton
03. Condenser Cooling Fan
Capacity: 1/10 HP

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Composite Wall Apparatus

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Technical Specifications:
  • Slab assembly arranged symmetrically on both sides of heater.
  • Slab Material : Slab Size
  • Cast Iron : 250 mm dia. & 20mm thick.
  • Bakelite : 250 mm dia. & 15 mm thick.
  • Press Wood : 250 mm dia. & 12 mm thick.
  • Heater : Nichrome Wire Heater.
  • The slab assembly with front window of glass/acrylic.
  • The whole set-up is ingeniously designed and schematically arranged on a powder-coated rigid structure.

Control Panel:
  • Digital Voltmeter : 0-300 Volts.
  • Digital Ammeter : 0-2 Amp.
  • Variac : 0-230 V, 2Amp.
  • Digital Temp. Indicator : 0-2000C, with multi-channel switch
  • Temp Sensors : RTD PT-100 type.
  • Standard make On/Off switch, Mains Indicator etc.

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Emissivity Measurement

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Specifications:

  • The test plate comprises of a mica heater sandwiched between two circular plates. Black plate is identical with test plate, but its surface is blackened. As all the physical properties, dimension and temperature are equal; heat losses from both plates will be same except radiation loss. Hence the input difference will be due to difference in emissivity. Both plates are supported on individual brackets in a wooden enclosure with one side glass to ensure steady atmospheric conditions. Temperature Sensors are provided to measure the temperature of each plate and surrounding. 
  • Supply is given to heaters through separate variacs so that temperatures of both can be kept equal and is measured with Digital Voltmeter and Digital Ammeter. Experiments Determining the Emissivity of a test plate. Study the variation of emissivity of test plate with respect to absolute temperature. 
  • Utilities Required Electricity Supply: 1Phase, 220 VAC, 4 Amp. Table for set-up support 

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Fluidized Bed Cooling Tower

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Specifications:

Cooling Tower:  
Dia:1000mm; Height:1800mm;
Motor:0.5HP (Sabar/Shaarrc/Lhp/Hindustan)  

Fan Blade : 500mm
Dia.;  SS Bolts & Nuts; 
Inlet & Outlet :1 ½”  x 1 ½”

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Parallel Counter Heat Flow Exchanger

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A double pipe heat exchanger can be operated in parallel flow mode as shown in the diagram at the left. Similarly a shell and tube heat exchanger can be operated in approximately parallel flow by having both fluids enter at one end and exit at the other end. With parallel flow the temperature difference between the two fluids is large at the entrance end, but it becomes small at the exit end as the two fluid temperatures approach each other. The overall measure of heat transfer driving force, the log mean temperature difference is greater for counter flow, so the heat exchanger surface area requirement will be larger than for a counter flow heat exchanger with the same inlet and outlet temperatures for the hot and the cold fluid.

  • Maximum cold fluid temperature - If we want to ensure that the temperature of the cold fluid never exceeds a particular temperature, then cocurrent exchanger designs are advantageous due to their inbuilt restriction to this effect.
  • Fast heat transfer - Let's inspect the temperatures at location A. The temperature difference between the hot and cold streams at this location is very large in the cocurrent design. In fact, it's the largest possible temperature difference achievable! Since the heat transfer rate is directly proportional to the temperature difference, the heat transfer rate will also be maximum here. Therefore, to achieve fast heat transfer away from thermal equilibrium conditions, parallel flow configurations will perform better.
  • Isothermal heat transfer - Suppose one of the two interacting fluids is undergoing a phase change due to the heat transfer (e.g. condensation of saturated steam), then both designs are identical. In this case, there is no change in temperature for one of the two streams and hence, no difference in the performance between configurations.

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Pin-Fin Apparatus

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RANGE OF EXPERIMENTS TO BE CARRIED OUT :
 
To study the temperature distribution along the length of a pin fin in natural & forced convection.
To calculate Gr, Pr & Nu number in natural conviction.
Calculate Re , Pr & Nu number in forced conviction.
Calculate the value of m & obtain the temperature at various locations along the length of the fin in natural & forced conviction.
Calculate the values of heat transfer rate from the fin & the fin effectiveness in natural & forced conviction.
The experiments can be conducted at various values of input & calculation can be made accordingly.

CONTROL PANEL :

1.12 Channel Digital Temperature Indicator
2.Dimmerstat : 0 - 2 A.
3.Main's On/Off Switch.
4.Voltmeter :0 - 250 V.
5.Ammeter :0 - 3 A.
6.Blower On/Off Switch.
 
SPACE REQUIRED :

1.5 m.(L)x 1.0 m(W) table top.
 
Service Required :
230 v Ac Supply 50 Hz
WEIGHT : @ 70 Kg
 

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Refrigeration Test Rig

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Description:
 

The REFRIGERATION test rig works on simple vapour compression refrigeration cycle and uses R134a as a refrigerant. It is environment friendly. The system is fabricated such that students can observe and study vapour compression cycle, its component principle & working. The arrangement of parts such that, all the parts are visible and working can be easily understood.

 

Technical Specifications:

SUB-TITLE

PARAMETER

DESCRIPTION

 

MODEL

NAERF-01E

REFRIGERATION
SYSTEM

Cooling
Capacity

450 Watts at rated test conditions* ( 1/8 TR )

 

Compressor

1/4 HP; Hermetically sealed. Make: Emerson Climate Technologies Ltd. /or Danfoss Ltd;/or  Tecumseh Products India Ltd./ or any equivalent make.

 

Condenser

Forced convection air cooled.

 

Condenser fan

Axial flow type.


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Stefan-Boltzmann

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The product consists :

  • Test disc are measured with the help of temperature sensors
  • The copper test disc is introduced at the center of hemisphere
  • Hot water to heat the hemisphere is obtained form a hot water tank
  • A hemisphere fixed to a Bakelite plate, the outer surface of which forms the jacket to heat it


Experiments :

  • Determination of Stefan Boltzmann constant and study the effect of hemisphere temperature on it.


Utilities Required :

  • Electricity Supply : 1 Phase, 220 V AC, 2 KW
  • Table for Set-up support.

Specifications

HemisphereDia. 200 mm (Approx.) made of Copper
JacketDia. 250 mm (Approx.) made of Stainless Steel
Test Disc SizeDia. 20 mm x 1.5 mm thickness made of Copper
Water TankStainless Steel 12 Ltrs. Cap.
Heater (2 Nos.)Nichrome Wire immersion heater.

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