Short answer

When designing for workers in hot conditions, prioritize localized cooling solutions for the head and trunk, and quantify the impact on overall thermal insulation.

Field
Human Factors
Source
Fashion and Textiles (2017)
Method
Experimental
Evidence
Strong effect

Active cooling devices, such as fans and vests, can substantially reduce the perceived temperature for outdoor workers, though their effectiveness varies by body region. This human factors research insight is drawn from a 2017 study published in Fashion and Textiles. Using Experimental, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing for workers in hot conditions, prioritize localized cooling solutions for the head and trunk, and quantify the impact on overall thermal insulation.

Study
Human FactorsHigh ImpactStrong effect

Wearable cooling devices offer significant thermal relief for construction workers, primarily at the head and trunk.

Active cooling devices, such as fans and vests, can substantially reduce the perceived temperature for outdoor workers, though their effectiveness varies by body region.

Fashion and Textiles · 2017

01

Key Findings

  • 01Cooling fans provided significant cooling primarily at the head.
  • 02Cooling vests were most effective for direct cooling of the trunk.
  • 03The cooling fans reduced the thermal insulation (clo value) of a typical outdoor worker's clothing ensemble from 0.75 to 0.48.
  • 04The difference in Standard Effective Temperature (SET) between wearing typical clothing and clothing with cooling fans was 2.6 °C at a surrounding temperature of 35 °C.
02

Application

Design takeaway

When designing for workers in hot conditions, prioritize localized cooling solutions for the head and trunk, and quantify the impact on overall thermal insulation.

How to apply

When designing workwear for hot climates, integrate active cooling elements like fans or water circulation systems, and test their effectiveness on key body areas using thermal manikins or human subjects.

Project actions

  • 01Consider how different body parts lose heat and absorb heat.
  • 02Think about how to integrate active cooling into clothing without making it too bulky or heavy.
03

Method & Evidence

AimTo evaluate the cooling efficacy of two types of wearable cooling devices for construction workers using a thermal manikin.
MethodExperimental
ProcedureTwo wearable cooling devices (cooling fans and a cooling vest) were tested on a thermal manikin within a climatic chamber. Measurements were taken over approximately 3 hours to assess cooling effects on different body parts and changes in clothing insulation. Standard Effective Temperature (SET) was simulated to quantify the perceived thermal comfort.
ContextConstruction industry, occupational safety, thermal comfort

Variables

IV["Type of cooling device (cooling fans, cooling vest, no device)","Ambient temperature"]
DV["Cooling effect on different body parts","Clothing insulation (clo value)","Standard Effective Temperature (SET)"]
CV["Thermal manikin","Climatic chamber conditions (humidity, air velocity)","Duration of measurement","Type of clothing ensemble"]
04

Strengths & Limitations

Strengths

  • +Uses a controlled environment (climatic chamber).
  • +Employs a thermal manikin for consistent measurements.
  • +Quantifies cooling effects using objective measures like SET and clo value.

Limitations

A thermal manikin doesn't sweat or have the same physiological responses as a human. The cooling vest might not have been optimized for the test.

Reliability & validity

The use of a thermal manikin in a controlled climatic chamber enhances the reliability and internal validity of the measurements by minimizing extraneous variables. However, external validity may be limited due to the artificial nature of the manikin and environment.

Think critically

How could the design of the cooling vest be improved to provide more consistent and widespread cooling across the trunk?

05

Design Principles

"Optimize wearable thermal management systems by focusing on direct cooling of high-heat-loss areas and quantifying the impact on perceived thermal comfort and insulation."

Understanding the localized cooling effects of wearable technology is crucial for designing protective clothing and equipment that genuinely enhances worker comfort and safety in demanding environments. This research informs the development of more effective thermal management solutions for physically demanding occupations.

06

What This Means for Your Design

Cooling gadgets for workers really help cool down their heads and chests, making them feel more comfortable in hot weather.

How to use in your project

  • 1.Use findings on localized cooling to justify design choices for thermal comfort in your design project.
  • 2.Reference the reduction in clo value to support claims about improved thermal performance.
07

Add to My Project

08

Quick Cite

Paragraph starter

Research indicates that wearable cooling devices can significantly improve thermal comfort for individuals working in hot environments. For instance, active cooling fans have demonstrated a notable cooling effect on the head, while cooling vests primarily target the trunk. These devices can reduce the thermal insulation of clothing ensembles, leading to a measurable decrease in perceived temperature (e.g., a 2.6 °C SET reduction at 35 °C ambient temperature). This suggests that incorporating targeted cooling mechanisms into workwear design is a viable strategy for mitigating heat stress.

09

Source

Fashion and Textiles

Evaluation of two cooling devices for construction workers by a thermal manikin

journal · 2017

View source

Questions About This Research

What does the research say about wearable cooling devices offer significant thermal relief for construction workers, primarily at the head and trunk?
When designing for workers in hot conditions, prioritize localized cooling solutions for the head and trunk, and quantify the impact on overall thermal insulation. Evidence: Fashion and Textiles (2017).
Why does "Wearable cooling devices offer significant thermal relief for construction workers, primarily at the head and trunk." matter for design?
Understanding the localized cooling effects of wearable technology is crucial for designing protective clothing and equipment that genuinely enhances worker comfort and safety in demanding environments. This research informs the development of more effective thermal management solutions for physically demanding occupations.
How can designers apply this research?
When designing for workers in hot conditions, prioritize localized cooling solutions for the head and trunk, and quantify the impact on overall thermal insulation.
What were the main findings?
Cooling fans provided significant cooling primarily at the head.. Cooling vests were most effective for direct cooling of the trunk.. The cooling fans reduced the thermal insulation (clo value) of a typical outdoor worker's clothing ensemble from 0.75 to 0.48.. The difference in Standard Effective Temperature (SET) between wearing typical clothing and clothing with cooling fans was 2.6 °C at a surrounding temperature of 35 °C.
What research method was used?
Experimental.
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2017 journal from Fashion and Textiles.
What should I do differently in my next project?
When designing workwear for hot climates, integrate active cooling elements like fans or water circulation systems, and test their effectiveness on key body areas using thermal manikins or human subjects.
What are the limitations?
The study used a thermal manikin, which may not perfectly replicate human physiological responses to heat and cooling. The cooling vest's effect was limited to the trunk and lacked steady cooling.