Upward Capture Ratio Calculator

This calculator computes the upward capture ratio (UCR) which measures the proportion of upward flow in a system relative to total flow. It's commonly used in HVAC, fluid dynamics, and environmental engineering applications.

Input Parameters

Calculation Results

Calculation Formula

Upward Capture Ratio (UCR) = (Upward Flow / Total Flow) × 100%

Where:
UCR = Upward Capture Ratio (percentage)
Upward Flow = Flow moving upward in the system
Total Flow = Total flow in the system

The result indicates what percentage of the total flow is captured or directed upward in the system.

Upward Capture Ratio Calculator Usage Guide

Learn how to use the Upward Capture Ratio Calculator and its applications in engineering

How to Use This Calculator

  1. Enter the upward flow rate in cubic meters per second (m³/s)
  2. Enter the total flow rate in cubic meters per second (m³/s)
  3. Click the "Calculate" button to compute the upward capture ratio
  4. The result will be displayed as a percentage

Principle and Applications

The upward capture ratio (UCR) is a key performance indicator in systems where flow direction matters, such as:

  • HVAC systems: Measuring how effectively a system captures and directs warm/cold air upward
  • Water treatment: Determining upward water flow efficiency in filtration systems
  • Industrial processes: Analyzing gas flow patterns in chemical processing
  • Environmental engineering: Assessing airflow patterns in ventilation systems

Interpreting Results

A UCR of 100% indicates that all flow is directed upward, while lower values indicate mixed flow patterns. Engineers typically aim for specific UCR values based on system design requirements.

Note: For more complex flow analysis, consider using this calculator as part of a broader engineering toolkit.