The Ventilation Heat Loss Calculator estimates the amount of heat lost due to ventilation in a given space over a year. It calculates this loss in kilowatt-hours (kWh/year) based on two primary factors:
Formula of Ventilation Heat Loss Calculator
Ventilation Heat Loss (kWh/year) = V * ΔT * 24 * 365 / 1000
Where:
- V represents the ventilation rate in cubic meters per second (m³/s).
- ΔT signifies the temperature difference between the indoor and outdoor environments in degrees Celsius (°C).
This straightforward formula considers the volume of air exchanged due to ventilation and the temperature variance between the inside and outside.
Table of General Terms
To aid users, here's a table of commonly searched terms related to ventilation and heat loss:
| Term | Definition |
|---|---|
| Ventilation Rate | The amount of air circulated per unit of time. |
| Temperature Difference | The contrast in temperature between two areas. |
| Heat Loss | The dissipation of warmth from a specific area. |
| Cubic Meters per Second | A unit measuring airflow volume per second. |
| Kilowatt-hours per Year | A unit representing energy usage over a year. |
Example of Ventilation Heat Loss Calculator
Let's consider a practical example: A room with a ventilation rate of 2.5 m³/s and a temperature difference of 15°C. Plugging these values into the formula:
Ventilation Heat Loss = 2.5 * 15 * 24 * 365 / 1000 = X kWh/year
This calculation allows users to understand the practical implications of varying ventilation rates and temperature differences on heat loss.
Most Common FAQs
An optimal rate depends on factors like room size, occupancy, and activities. However, the ASHRAE standard suggests 0.35 air changes per hour (ACH) for residential spaces.
A higher temperature difference between indoor and outdoor spaces results in increased heat loss due to more substantial thermal exchange.
While reducing rates may save energy, it may compromise indoor air quality. Balancing energy efficiency with adequate ventilation is crucial.