The h2x Blog
We publish practical guides, top tips and trends, latest news, and more stories related to the mechanical, plumbing and fire industry.
Latest Articles
Selecting The Right Radiator Size (Chart Included)
Discover the perfect radiator size for your space with our comprehensive radiator size chart. Achieve optimal heating...
What Are Cv and Kv? Flow Coefficient Formulas & Valve Sizing Explained
Learn how flow coefficient (Cv) impacts valve sizing. Explore their calculation, importance in fluid dynamics, applications, and...
Understanding Thermal Bridging and Its Impact on Building Heat Loss
Learn how thermal bridging affects heat loss in buildings. Explore solutions and insights to improve energy efficiency.
Fixed Speed vs. Variable Speed Pumps
Uncover the pros and cons of fixed vs. variable speed pumps in h2x Engineering's informative blog post....
101 on Expansion Vessels (Includes Calculation Example)
Gain a comprehensive understanding of expansion vessels inside this informative blog. Includes a calculation example for practical...
How to Size a Circulation Pump for a Heating System
Check out how to calculate circulation pump flow and head, determine the index circuit and establish the...
Pipe Sizing for Heat Pump Systems (Includes a Worked Example)
It is commonly stated throughout the industry that heat pumps require 28mm pipes. This is a myth,...
Boiler Systems vs. Heat Pumps: Key Factors To Consider
Making an informed choice about boiler systems vs heat pumps involves understanding their high-level differences, technical nuances,...
Calculating Heat Loss: A Step-by-Step Guide
Learn how to calculate heat loss using U-values, surface areas, temperature differences, ventilation and thermal bridging.
Heat Pump COP and SCOP: What They Mean and Why They Matter
In this guide, we explore the significance of heat pump COP and SCOP, essential factors to consider...
Darcy-Weisbach Equation vs Hazen-Williams for Pipe Friction Loss
Compare the Darcy-Weisbach equation and Hazen-Williams formula, when to use each and how they calculate pipe friction...
What is District Heating?
District heating systems are gaining traction worldwide for their energy efficiency and sustainable potential. This comprehensive guide...
Featured (Must-Read Blogs)
How to Calculate Duct Size for HVAC Systems
Learn how to calculate duct size from airflow, velocity and friction rate, with a worked example for...
What Are Cv and Kv? Flow Coefficient Formulas & Valve Sizing Explained
Learn how flow coefficient (Cv) impacts valve sizing. Explore their calculation, importance in fluid dynamics, applications, and...
Calculating Heat Loss: A Step-by-Step Guide
Learn how to calculate heat loss using U-values, surface areas, temperature differences, ventilation and thermal bridging.
Darcy-Weisbach Equation vs Hazen-Williams for Pipe Friction Loss
Compare the Darcy-Weisbach equation and Hazen-Williams formula, when to use each and how they calculate pipe friction...
How to Size Water Pipes
To size water pipes correctly is critical for the performance of your design. Below, we will explore...
How to Calculate Residual and Static Water Pressure
Learn the difference between residual and static water pressure, how to calculate both through a plumbing system,...
Highlights (Free Downloads)
Duct Sizing Chart for CFM, Velocity and Friction Rate
A duct sizing chart for round and rectangular ducts, showing airflow capacity and velocity at common friction...
FREE Pipe Volume Spreadsheet
Access h2x's free pipe volume spreadsheet to streamline calculations, optimise design, and enhance efficiency in piping projects.
Hardy Cross Method – Sizing a Ring Main (FREE Spreadsheet)
Flow rate and friction loss in a pipe network system can be difficult to calculate. When the...