What question did this study set out to answer?

The research aims to evaluate the effectiveness of mixed-mode ventilation for enhancing indoor environmental quality and reducing energy consumption in an office setting.

February 22, 2026Open Access

Verification of Thermal Comfort and Energy Savings by Natural Ventilation for an Office Building With Mixed-Mode Ventilation

Key Points

The research aims to evaluate the effectiveness of mixed-mode ventilation for enhancing indoor environmental quality and reducing energy consumption in an office setting.
Measured indoor environment variables during spring
Assessed power consumption of air conditioning in an office building
Compared performance between mixed-mode and traditional ventilation systems
Predicted Mean Vote (PMV) was maintained between 0.0 and 0.5 with mixed-mode ventilation
Power consumption was reduced by approximately 72.8% to 82.1% compared to non-mixed-mode floors
Ventilation volume exceeded the benchmark of 30 m3/h per person

Abstract

Mixed-mode ventilation has been attracting attention as an air conditioning method for improving IEQ and for energy saving in buildings. This study measured the indoor environment and power consumption of air conditioning in an office building with mixed-mode ventilation in spring. The results showed that PMV remained at 0.0 - 0.5 with mixed-mode ventilation, and that the power consumption of air conditioning was approx. 72.8 %-82.1 % lower than that of floors without mixed-mode ventilation, and the ventilation volume exceeded the benchmark of 30 m3/h per person.

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Cite This Study

Arata et al. (Thu,) studied this question.

synapsesocial.com/papers/699a9cc6482488d673cd28df https://doi.org/https://doi.org/10.3130/aijt.32.251

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