Thermal Comfort vs Human Psychology. Blending HVAC science, building performance, and human perception behavior (en Inglés) - Charles Nehme

Thermal comfort is often treated as a simple engineering outcome-set a temperature, control humidity, adjust airflow, and assume occupants will be satisfied. Yet, real-world experience consistently proves otherwise.

Two people can sit in the same room, under identical environmental conditions, and report completely different levels of comfort. One feels "too cold," the other "perfect," and a third may feel "stuffy" despite ideal readings on a sensor dashboard.

This gap between measured conditions and human perception is where engineering meets psychology.

This book explores that gap.

It examines how thermal comfort is not only a physical state defined by heat transfer, air movement, and humidity, but also a deeply psychological experience influenced by expectation, adaptation, culture, control, and emotional state. In modern HVAC design, ignoring the human factor leads to systems that perform well on paper but fail in practice.

As buildings become more energy-efficient and tightly controlled, discomfort complaints paradoxically increase. Why? Because comfort is no longer just about physics-it is about perception.

This book aims to bridge that divide by combining HVAC fundamentals, environmental physics, and human behavioral science into a unified understanding of comfort. It is written for engineers, designers, and decision-makers who want to move beyond conventional setpoint thinking and toward truly human-centered environmental design.