Energy Recovery Effectiveness Calculator

Formula

The formula to calculate the energy recovery effectiveness (E) is:

\[ E = \left( \frac{ER}{M} \right) \times 100 \]

Where:

\( E \) is the energy recovery effectiveness (%)
\( ER \) is the energy recovered
\( M \) is the maximum possible energy recovery

Definitions

Energy Recovery Effectiveness: A measure of how efficiently an energy recovery system captures and reuses energy that would otherwise be wasted. It is expressed as a percentage, representing the ratio of the actual energy recovered to the maximum possible energy that could be recovered. Higher effectiveness indicates a more efficient system, which can lead to significant energy savings and reduced operational costs. Energy recovery systems are commonly used in HVAC systems, industrial processes, and renewable energy applications to improve overall energy efficiency and sustainability.

Example

Let's say the energy recovered (ER) is 500 units and the maximum possible energy recovery (M) is 1000 units. Using the formula:

\[ E = \left( \frac{500}{1000} \right) \times 100 \]

We get:

\[ E = 50\% \]

So, the energy recovery effectiveness is 50%.

Extended information about "Energy-Recovery-Effectiveness-Calculator"

Energy Efficiency Cost Recovery Factor

Definition: The cost recovery factor measures the payback period for energy efficiency investments.

Formula: \( \text{CRF} = \frac{r(1+r)^n}{(1+r)^n - 1} \)

\( \text{CRF} \): Cost Recovery Factor
\( r \): Interest Rate
\( n \): Number of Periods

Example: \( \text{CRF} = \frac{0.05(1+0.05)^{10}}{(1+0.05)^{10} - 1} \)

Interest Rate: 5%
Number of Periods: 10 years

Equation for Percent Recovery

Definition: Percent recovery is the percentage of the initial amount of a substance that is recovered after a process.

Formula: \( \text{Percent Recovery} = \frac{\text{Recovered Amount}}{\text{Initial Amount}} \times 100 \)

\( \text{Percent Recovery} \): Percentage of substance recovered
\( \text{Recovered Amount} \): Amount of substance recovered
\( \text{Initial Amount} \): Initial amount of substance

Example: \( \text{Percent Recovery} = \frac{80}{100} \times 100 \)

Recovered Amount: 80 grams
Initial Amount: 100 grams

Energy Efficiency Rating Calculator

Definition: This calculator determines the energy efficiency rating of a system based on its energy input and output.

Formula: \( \text{Efficiency} = \frac{\text{Energy Output}}{\text{Energy Input}} \times 100 \)

\( \text{Efficiency} \): Energy Efficiency Rating
\( \text{Energy Output} \): Useful energy output
\( \text{Energy Input} \): Total energy input

Example: \( \text{Efficiency} = \frac{900}{1000} \times 100 \)

Energy Output: 900 J
Energy Input: 1000 J

Estimated Ultimate Recovery Formula

Definition: Estimated ultimate recovery (EUR) is the total amount of resource expected to be recovered from a reservoir.

Formula: \( \text{EUR} = \text{Initial Production} \times \text{Decline Rate} \)

\( \text{EUR} \): Estimated Ultimate Recovery
\( \text{Initial Production} \): Initial production rate
\( \text{Decline Rate} \): Rate of decline in production

Example: \( \text{EUR} = 1000 \times 0.85 \)

Initial Production: 1000 barrels/day
Decline Rate: 0.85

Heat Recovery Calculation Formula

Definition: This formula calculates the amount of heat recovered in a heat recovery system.

Formula: \( Q = \dot{m} c_p \Delta T \)

\( Q \): Heat Recovered
\( \dot{m} \): Mass Flow Rate
\( c_p \): Specific Heat Capacity
\( \Delta T \): Temperature Difference

Example: \( Q = 2 \times 4.18 \times 50 \)

Mass Flow Rate: 2 kg/s
Specific Heat Capacity: 4.18 J/g°C
Temperature Difference: 50°C

Calculation of Energy Efficiency

Definition: Energy efficiency is the ratio of useful energy output to the total energy input.

Formula: \( \eta = \frac{\text{Useful Energy Output}}{\text{Total Energy Input}} \)

\( \eta \): Energy Efficiency
\( \text{Useful Energy Output} \): Energy used for the intended purpose
\( \text{Total Energy Input} \): Total energy consumed

Example: \( \eta = \frac{800}{1000} \)

Useful Energy Output: 800 J
Total Energy Input: 1000 J