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Related Experiment Video

Updated: Mar 19, 2026

Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites

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Experimental and simulation study on bake-out with dilution ventilation technology for building materials.

Yang Lv¹, Jing Liu^2,3, Shanshan Wei¹

¹a School of Civil Engineering, Faculty of Infrastructure Engineering , Dalian University of Technology , Dalian , China.

Journal of the Air & Waste Management Association (1995)

|June 23, 2016

Summary

Bake-out with dilution ventilation effectively reduces indoor air pollutants like formaldehyde and VOCs from new building materials. Optimal removal is achieved with higher temperatures, longer times, and increased air changes per hour, balancing efficiency and energy use.

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Design and Optimization Strategies of a High-Performance Vented Box

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Area of Science:

Environmental Science
Building Science
Indoor Air Quality

Background:

New building materials in China release volatile organic compounds (VOCs), including formaldehyde, benzene, toluene, and xylene.
These VOCs pose potential health risks in residential environments.
Effective methods are needed to reduce indoor air pollution from off-gassing materials.

Purpose of the Study:

To investigate the effectiveness of bake-out with dilution ventilation for removing indoor air pollutants.
To assess the impact of various operating conditions on pollutant removal efficiency.
To simulate and analyze the total VOC (TVOC) removal in a controlled environment.

Main Methods:

Utilized a test chamber simulating a newly renovated Chinese residential room.
Conducted experiments to evaluate formaldehyde, benzene, toluene, and xylene removal.
Employed numerical simulation to model TVOC removal under different conditions and analyze concentration changes during the bake-out and exhaust dilution process.

Main Results:

Higher baking temperatures, longer baking durations, and extended ventilation times increased VOC removal efficiency.
The amount of TVOC removed increased with higher air change rates (ACH).
Experimental data indicated that a ventilation time of 4 hours at an ACH of 1.2 times/h is a reasonable balance between removal efficiency and energy consumption.

Conclusions:

Bake-out with dilution ventilation is a viable technology for reducing indoor air pollutants from new building materials.
Optimizing bake-out temperature, time, and ventilation strategy, including ACH, enhances pollutant removal.
The study provides practical insights for energy-efficient indoor air quality management in newly renovated spaces.