Heat Discomfort Zone Work Load

Reference data and engineering information about heat discomfort zone work load for thermodynamics applications.

heatdiscomfortzoneworkCalculator

Overview

Engineering reference data for Heat Discomfort Zone Work Load in thermodynamics.

Key Formulas

First Law

$\Delta U = Q - W$

Energy is conserved — heat added minus work done.

Ideal Gas Law

$PV = nRT$

Relates pressure, volume, and temperature of an ideal gas.

Heat Transfer

$Q = mc\Delta T$

Sensible heat transfer.

Carnot Efficiency

$\eta = 1 - T_C/T_H$

Maximum efficiency between two temperatures.

Variables

Symbol	Description	Unit
$U$	Internal energy	J
$Q$	Heat	J
$W$	Work	J
$P$	Pressure	Pa
$V$	Volume	m³
$T$	Temperature	K

Heat Discomfort Zone Work Load Table

5 rows

Maximum recommended physical work load in heat discomfort zones based on temperature and relative humidity.
Temperature(°F)	Temperature(°C)	Max Work Load (30% RH)	Max Work Load (40% RH)	Max Work Load (60% RH)	Max Work Load (80% RH)
80	27	Very Heavy	Very Heavy	Very Heavy	Heavy
90	32	Very Heavy	Heavy	Moderate	Light
100	38	Heavy	Moderate	Light	Not recommended
110	43	Moderate	Light	Not recommended	Not recommended
120	49	Light	Not recommended	Not recommended	Not recommended

Source: Based on engineering standards

Interactive Charts

Heat Index

References

Original Source

Source: engineeringtoolbox.com