Evaporative Cooling Efficiency Calculator

Formula

The formula to calculate the evaporative cooling efficiency (eff) is:

\[ eff = \frac{DB - OT}{\Delta T} \]

Where:

\( eff \) is the efficiency of the cooler
\( DB \) is the dry-bulb temperature
\( OT \) is the outlet temperature
\( \Delta T \) is the total change in temperature from inlet to outlet

Definitions

Evaporative Cooling: A process by which heat is transferred from an object or air through the evaporation of water. When water evaporates, it requires heat in order to do so, taking heat away from whatever it was in contact with, causing cooling.

Example

Let's say the dry-bulb temperature (DB) is 35°C, the outlet temperature (OT) is 25°C, and the total temperature change (ΔT) is 10°C. Using the formula:

\[ eff = \frac{35 - 25}{10} \]

We get:

\[ eff = 1 \]

So, the efficiency of the cooler is 1 (or 100%).

Extended information about "Evaporative-Cooling-Efficiency-Calculator"

Evaporative Cooling Calculation Example

Definition: This example demonstrates the calculation of evaporative cooling efficiency.

Formula: \( \text{Efficiency} = \frac{\text{Actual Cooling}}{\text{Theoretical Cooling}} \times 100 \)

\( \text{Efficiency} \): Cooling efficiency
\( \text{Actual Cooling} \): Actual temperature drop achieved
\( \text{Theoretical Cooling} \): Maximum possible temperature drop

Example: \( \text{Efficiency} = \frac{10}{15} \times 100 \)

Actual Cooling: 10°C
Theoretical Cooling: 15°C

How to Calculate Cooling Efficiency

Definition: Cooling efficiency measures the effectiveness of an evaporative cooler.

Formula: \( \text{Efficiency} = \frac{\text{Actual Cooling}}{\text{Theoretical Cooling}} \times 100 \)

\( \text{Efficiency} \): Cooling efficiency
\( \text{Actual Cooling} \): Actual temperature drop achieved
\( \text{Theoretical Cooling} \): Maximum possible temperature drop

Example: \( \text{Efficiency} = \frac{8}{12} \times 100 \)

Actual Cooling: 8°C
Theoretical Cooling: 12°C

Evaporative Cooler Design Calculation

Definition: This calculation helps in designing an efficient evaporative cooler.

Formula: \( \text{Cooling Capacity} = \text{Air Flow Rate} \times \text{Temperature Drop} \)

\( \text{Cooling Capacity} \): Cooling capacity of the cooler
\( \text{Air Flow Rate} \): Rate of air flow through the cooler
\( \text{Temperature Drop} \): Temperature drop achieved

Example: \( \text{Cooling Capacity} = 500 \times 10 \)

Air Flow Rate: 500 m³/h
Temperature Drop: 10°C

Evaporative Cooling System Efficiency

Definition: This measures the overall efficiency of an evaporative cooling system.

Formula: \( \text{System Efficiency} = \frac{\text{Actual Cooling}}{\text{Theoretical Cooling}} \times 100 \)

\( \text{System Efficiency} \): Efficiency of the cooling system
\( \text{Actual Cooling} \): Actual temperature drop achieved
\( \text{Theoretical Cooling} \): Maximum possible temperature drop

Example: \( \text{System Efficiency} = \frac{9}{14} \times 100 \)

Actual Cooling: 9°C
Theoretical Cooling: 14°C

Evaporative Cooler Size Calculator

Definition: This calculator helps determine the appropriate size of an evaporative cooler for a given space.

Formula: \( \text{Cooler Size} = \frac{\text{Room Volume}}{\text{Air Changes Per Hour}} \)

\( \text{Cooler Size} \): Required size of the cooler
\( \text{Room Volume} \): Volume of the room
\( \text{Air Changes Per Hour} \): Desired air changes per hour

Example: \( \text{Cooler Size} = \frac{100}{20} \)

Room Volume: 100 m³
Air Changes Per Hour: 20

Rate of Evaporation Calculator

Definition: This calculator determines the rate at which a liquid evaporates.

Formula: \( E = \frac{m}{t} \)

\( E \): Evaporation Rate
\( m \): Mass of the liquid evaporated
\( t \): Time taken for evaporation

Example: \( E = \frac{500}{2} \)

Mass: 500 grams
Time: 2 hours

Calculation of Evaporation Rate

Definition: This calculation determines the rate at which a liquid evaporates.

Formula: \( E = \frac{m}{t} \)

\( E \): Evaporation Rate
\( m \): Mass of the liquid evaporated
\( t \): Time taken for evaporation

Example: \( E = \frac{300}{1.5} \)

Mass: 300 grams
Time: 1.5 hours