Design Experiment

HEATING PELTIER

1. Objective(s):

2.Intended Learning Outcomes (ILOs):

3. Principles and Discussion:

Solar radiation describes the ultraviolet and near-infrared radiation emitted from the sun. The different regions are described by their wavelength range within the broad band range of 0.20 to 4.0 m (microns). Terrestrial radiation is a term used to describe infrared radiation emitted from the atmosphere. The following is a list of the components of solar and terrestrial radiation and their approximate wavelength ranges:

Ultraviolet: 0.20 - 0.39 m

Visible: 0.39 - 0.78 m

Near-Infrared: 0.78 - 4.00 m

Infrared: 4.00 - 100.00 m

The availability of energy is affected by location including latitude and elevation, season, and time of day. All of which can be readily determined.THERMOCOUPLE

In thermometry, the sensor of a thermoelectric thermometer, consisting of electrically conducting circuit elements of two different thermoelectric characteristics joined at a junction. Put differently, a thermocouple occurs when any two different kinds of metals joined at a junction are exposed to a temperature gradient. When the two different metals are exposed to a temperature gradient they generate a very small electrical charge, commonly measured in millivolts, that correlates to the temperature to which the elements are exposed. This phenomenon is sometimes referred to as the Seebeck effect.WORKING PRINCIPLE OF A THERMOCOUPLE

The working principle of thermocouple is based on three effects, discovered by Seebeck, Peltier and Thomson. They are as follows:a) SEEBECK EFFECTThe Seebeck effect states that when two different or unlike metals are joined together at two junctions, an electromotive force (emf) is generated at the two junctions. The amount of emf generated is different for different combinations of the metals.b) PELTIER EFFECTThe the Peltier effect states that when two dissimilar metals are joined together to form two junctions, emf is generated within the circuit due to the different temperatures of the two junctions of the circuit.c) THOMSON EFFECTThe Thomson effect states that when two unlike metals are joined together forming two junctions, the potential exists within the circuit due to temperature gradient along the entire length of the conductors within the circuit.

4. Resources:

Thermometer (Gun) 1 set of Solar PV trainer with light bridge source 1 pc. Ruler 10 pcs Electrical connectors 1 pc. Calculator 1 pc. Digital multimeter Peltier Device

5. Procedures:

Course: ECP 483L1Experiment No.

Group No.: GROUP 2Section: EC42FA1

Group Members: Date Performed: March 11, 2015

1. ALFARO, Ma. Dhanita Date Submitted: March 18, 2015

2. FLANDEZ, Ghenica F.Instructor: Engr. Christian L. Pao

3. PEA, Edric

4. QUINTANA, Michelle Anne M.

5. TORRES, Laicel

6. Data and Results:

7. Interpretation of Data and Results:

8. Conclusion:

9. Question(s) and Answer(s):

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