Reflected Radiation Given Incident, Absorbed And Transmitted Radiation Calculator

Formula Used:

\[ \text{Reflected Radiation} = \text{Incident Radiation} - \text{Absorbed Radiation} - \text{Transmitted Radiation} \] \[ G_{ref} = G - G_{abs} - G_{tr} \]

Incident Radiation (G):

W/m²

Absorbed Radiation (G_abs):

W/m²

Transmitted Radiation (G_tr):

W/m²

Reflected Radiation (G_ref):

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1. What is Reflected Radiation?

Reflected radiation is the amount of radiation energy reflected by a body per its unit surface area. It represents the portion of incident radiation that is not absorbed or transmitted through the material.

2. How Does the Calculator Work?

The calculator uses the radiation balance equation:

\[ \text{Reflected Radiation} = \text{Incident Radiation} - \text{Absorbed Radiation} - \text{Transmitted Radiation} \] \[ G_{ref} = G - G_{abs} - G_{tr} \]

Where:

\( G_{ref} \) — Reflected Radiation (W/m²)
\( G \) — Incident Radiation (W/m²)
\( G_{abs} \) — Absorbed Radiation (W/m²)
\( G_{tr} \) — Transmitted Radiation (W/m²)

Explanation: This equation represents the fundamental radiation balance where the reflected radiation is calculated as the difference between incident radiation and the sum of absorbed and transmitted radiation.

3. Importance of Radiation Balance Calculation

Details: Calculating reflected radiation is crucial in various fields including thermodynamics, material science, environmental studies, and building design. It helps determine the radiative properties of materials and their energy efficiency.

4. Using the Calculator

Tips: Enter all radiation values in W/m². Ensure that the sum of absorbed and transmitted radiation does not exceed the incident radiation. All values must be non-negative.

5. Frequently Asked Questions (FAQ)

Q1: What units are used for radiation measurements?
A: Radiation is typically measured in watts per square meter (W/m²), which represents the power per unit area.

Q2: Can reflected radiation be negative?
A: No, reflected radiation cannot be negative. If the calculation results in a negative value, it indicates an error in input values where absorbed plus transmitted radiation exceeds incident radiation.

Q3: What factors affect reflected radiation?
A: Surface properties, material composition, wavelength of radiation, and angle of incidence all affect the amount of radiation reflected.

Q4: How is this different from albedo?
A: Albedo is the ratio of reflected radiation to incident radiation, while reflected radiation is the absolute amount of radiation reflected.

Q5: What are typical values for reflected radiation?
A: Values vary widely depending on material. Highly reflective surfaces like mirrors can reflect over 90% of incident radiation, while dark surfaces may reflect less than 10%.