Hot Water Heating System Design Application

Reference data and engineering information about hot water heating system design application for water systems applications.

hotwaterheatingsystem

Overview

Engineering reference data for Hot Water Heating System Design Application in water systems.

$P = \rho g h$

Pressure due to water column.

$Q = A v$

Area × velocity.

Follow these steps to design and balance your hot water heating system:

Sketch the System: Create a diagram of your piping layout, similar to the default example.
Structure the Sections: Tag and organize sections into the hierarchical application structure.
Input Data: Enter parameters for each section, including power, pipe dimensions, lengths, minor loss coefficients, and temperature drop.
Optimize Dimensions: Adjust pipe sizes to achieve appropriate fluid velocities and pressure drops.
Select Pump: Choose a pump whose maximum pressure output exceeds the highest calculated accumulated pressure loss in your system.
Balance the System: Start from the endpoints and add balancing pressures until the net pump pressure at each endpoint equals zero. Apply balancing pressures in other sections as needed.
Save Your Work: Download the data file to your local system.

Pressure Loss Calculation: This tool calculates pressure loss for either the flow or the return piping system. For systems where flow and return piping are identical, the total pressure loss the pump must overcome is 2 times the calculated value.
Dissimilar Piping: If the flow and return systems are different (e.g., reversed return), calculate each side separately. The total pump pressure requirement is the sum of losses from both systems.
Minor Loss Coefficients: When calculating only half the system, use half the minor loss coefficient values specified for components (like heaters or terminal units) that connect the flow and return lines.
Balancing Valve Sizing: For systems with identical flow and return piping, maintain the design flow but double the calculated balancing pressure drop for valve selection. For dissimilar systems, sum the required pressure drops.