Chief Technology Officer at Smart Fog
Author
Ido Goldstein is a technology innovator with deep expertise in humidity engineering, climate control, and non-wetting fog systems. He has spent years advancing energy-efficient and water-smart solutions that help industries like cleanrooms, data centers, wineries, and greenhouses maintain precise environmental control.
Passionate about technology with real-world impact, Ido also supports sustainable agriculture initiatives and nonprofit innovation. Through this blog, he shares practical insights on HVAC advancements, indoor air quality, and the science behind high-performing environments.
Evaporative cooling can drop facility temperatures by up to 20 to 30°F, but only under the right conditions. This guide explains the adiabatic cooling principle, how wet-bulb temperature controls your real-world result, and how to assess what drop your facility can actually achieve.
The heat stress index chart identifies four danger zones, but reading the chart is only the first step. This guide translates each zone into the specific worker safety actions, work/rest ratios, and OSHA thresholds that EHS professionals need to act on.
Heat index, WBGT, and wet bulb temperature each measure heat differently and carry different weight in OSHA’s heat illness prevention guidance. This article explains the differences, when they diverge, and which metric applies to workplace compliance.
Absolute humidity measures the mass of water vapor per cubic meter of air. This guide explains the calculation formula, walks through a worked numerical example from RH and temperature inputs, and clarifies how g/m³ differs from other humidity units.
Enthalpy of moist air is the total heat content of a dry air and water vapor mixture, expressed per unit mass of dry air. This guide presents the full formula, shows how to derive the humidity ratio from measurable conditions, and walks through a complete numerical example in both SI and Imperial units.
Heat index is calculated using the NOAA Rothfusz regression equation, which combines air temperature and relative humidity. This guide covers the full formula, a step-by-step worked example, a reference chart, and the conditions under which the formula is and is not valid.
Steam and adiabatic humidification differ by an order of magnitude in energy consumption. This article explains the thermodynamic reasons why, quantifies the operating cost gap, and identifies which facility profiles justify each technology on energy grounds.
Absolute humidity measures the actual mass of water vapor present in a given volume of air, expressed in grams per cubic meter. Unlike relative humidity, it does not change when temperature changes. This article explains the definition, the unit, and why the distinction matters in practice.
The heat index is the “feels like” temperature — a number that combines actual air temperature with relative humidity to estimate how hot conditions feel to the human body. This guide explains the mechanism, risk thresholds, and the limits of the number itself.
In drying and sealed storage applications, relative humidity gives misleading readings as temperature changes. This guide explains why absolute humidity in g/m³ is the correct metric, how to use it to define a drying endpoint, and what it reveals about sealed storage conditions.