EMISSIVITY MEASUREMENT APPARATUS

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EMISSIVITY MEASUREMENT APPARATUS Specification

Product Type
EMISSIVITY MEASUREMENT APPARATUS

Application
Heat Transfer Laboratory Equipment

Power Source
Single Phase

Material
Cast Iron

Usage
Heat Transfer Laboratory Equipment

Operate Method
The present Set-up is designed tomeasure the emissivity of test plate. The test plate comprises of a micaheater sandwiched between two circular plates. Black plate is identical with testplate, but its surface is blackened. As all the physical properties,dimension and temperature are equal heat losses from both plates will be sameexcept radiation loss. Hence the input difference will bedue to difference in emissivity. Both plates are supported onindividual brackets in a enclosure with one side glass to ensure steadyatmospheric conditions. Temperature Sensors are provided tomeasure the temperature of each plate and surrounding. Electric Supply is given to heatersthrough separate variacs so that temperatures of both can be kept equal and isme asured with Digital Voltmeter and Digital Ammeter.

Frequency
50 Hz Hertz (HZ)

EMISSIVITY MEASUREMENT APPARATUS Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash on Delivery (COD), Cash Advance (CA), Cheque, Telegraphic Transfer (T/T), Letter of Credit (L/C)

Packaging Details
Carton Box, Export Quality also Available

Main Export Market(s)
Africa, Asia, Middle East

Main Domestic Market
All India

Certifications
ISO 9001, 14001, CE

About EMISSIVITY MEASUREMENT APPARATUS

Specification:

EMISSIVITY MEASUREMENT APPARATUS

Description

The present Set-up is designed tomeasure the emissivity of test plate.

The test plate comprises of a micaheater sandwiched between two circular plates.

Black plate is identical with testplate, but its surface is blackened.

As all the physical properties,dimension and temperature are equal heat losses from both plates will be sameexcept radiation loss.

Hence the input difference will bedue to difference in emissivity.

Both plates are supported onindividual brackets in a enclosure with one side glass to ensure steadyatmospheric conditions.

Temperature Sensors are provided tomeasure the temperature of each plate and surrounding.

Electric Supply is given to heatersthrough separate variacs so that temperatures of both can be kept equal and isme asured with Digital Voltmeter and Digital Ammeter.

Product Description

Material: Cast Iron

Brand: Teknik

Frequency: 50 Hz

Phase: Single Phase

Accurate Emissivity Measurement

This apparatus enables users to measure emissivity accurately by comparing heat loss from a test plate and a blackened reference plate under controlled laboratory conditions. Its design considers all relevant variables-dimension, material properties, and temperature-making it highly reliable for experimental heat transfer studies.

Robust Laboratory Construction

Constructed with cast iron and featuring a sturdy enclosure with a glass window, the apparatus sustains stable operating conditions and ensures safety. Its durability and precision sensors make it a dependable choice for educational and industrial laboratory applications.

Easy Operation and Monitoring

The system utilizes digital voltmeters and ammeters for precise measurement of power input, supported by separate variacs for each plate's heater. This allows users to control and match plate temperatures effectively, ensuring accurate comparative emissivity calculations.

FAQ's of EMISSIVITY MEASUREMENT APPARATUS:

Q: How is the emissivity of the test plate determined with this apparatus?

A: The apparatus compares heat losses from a standard blackened plate and the test plate-both identical in shape and insulation-under equal temperatures. By measuring the power input difference via digital voltmeters and ammeters, the emissivity of the test plate can be calculated, as the only variable is the radiative loss due to surface emissivity.

Q: What is the main benefit of using this apparatus in a heat transfer laboratory?

A: Using this apparatus allows students and researchers to directly study and quantify surface emissivity, an essential property in radiative heat transfer. It provides practical insight into how material finishes affect thermal emissions, reinforcing theoretical concepts through hands-on experimentation.

Q: When and where should this apparatus be used?

A: The EMISSIVITY MEASUREMENT APPARATUS is designed for use in academic, industrial, or research laboratories focused on heat transfer. It is best used when a controlled environment is available, as consistent atmospheric conditions are important for precise measurements.

Q: What is the process of operating the emissivity measurement apparatus?

A: First, connect each plate's heater to its respective variac and adjust voltages until both plates reach the same temperature as measured by the built-in sensors. Record the input power for each. The difference in power input, given all other conditions are identical, is attributed to emissivity differences between the plates.

Q: How does the enclosure enhance the accuracy of measurements?

A: The enclosure, with a glass pane on one side, minimizes the influence of external environmental changes, maintaining steady atmospheric conditions around the plates. This containment ensures measurement consistency and improves the reliability of experimental results.

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