#heat-release-rate

A dark modern living room at night where a small flame burns on a sofa cushion, spreading outward in a glowing ring of fire across the fabric while thin smoke gathers under the ceiling and a wall clock hangs in the shadows — the first seconds of fire growth.

🔥 Fire Fundamentals July 21, 2026 · 14 min read

The t-Squared Fire: How Fire Growth Rate Shapes Escape Time

Slow, medium, fast, ultrafast: how the t-squared curve turns fire growth into numbers, and why modern fuels outrun its four classes.

A sofa fully engulfed in flames on a weighing platform beneath the stainless-steel exhaust hood of a furniture calorimeter in a fire research laboratory, with gas analyser racks beside it — the setup that measures the heat release rate of burning objects.

📊 Fire Testing July 3, 2026 · 12 min read

Heat Release Rate: Why HRR Is the King of Fire Science

Why heat release rate is the single most important number in fire science: how labs measure it, what it predicts, and why it outranks smoke toxicity.

A dried-out Christmas tree in a dark living room engulfed in fierce orange flames that climb to the ceiling, with thick black smoke spreading overhead and a warm glow falling on a sofa and wrapped gifts below — the start of a flashover.

🏠 Fire in Daily Life June 19, 2026 · 8 min read

Christmas Tree Fire: Flashover in 60 Seconds Explained

A dry Christmas tree fire can hit 7 megawatts and flash a whole room in under a minute. Here is the NIST science, second by second, and why water stops it.

Cutaway of a cone calorimeter showing the truncated conical heater above a 100 mm specimen, spark igniter, exhaust duct, and oxygen analyser

📊 Fire Testing April 18, 2026 · 16 min read

Cone Calorimeter 101: HRR, THR, and MARHE Explained

What a cone calorimeter measures — peak heat release rate, total heat release, and MARHE — plus the oxygen-consumption math behind every number.

The science of fire visualized — the fire tetrahedron showing fuel, oxygen, heat, and chain reaction with molecular structures and flame dynamics

🔥 Fire Fundamentals April 13, 2026 · 15 min read

The Science of Fire: What You Think You Know Is Wrong

Explore the science of fire — from radical chain reactions and flame anatomy to flashover physics and why modern homes burn 7x faster than 1950s ones.