In this study, it was designed breathing wall considered the effective aperture area according to regional ventilation condition and reviewed unit performance. It was evaluated annual ventilation performance of breathing wall system in an apartment and reviewed the heat loss the interior and confirm...
In this study, it was designed breathing wall considered the effective aperture area according to regional ventilation condition and reviewed unit performance. It was evaluated annual ventilation performance of breathing wall system in an apartment and reviewed the heat loss the interior and confirmed an energy savings effect. The major results are summarized as follows.
1) To predict the natural ventilation of a prototype, the cases by region were identified with energy-saving type, winter IAQ focused type, annual IAQ focused type satisfying the terms of ventilation.
In the central region, the appropriate effective aperture area appeared with αA20㎠/㎡, αA50㎠/㎡, αA80㎠/㎡ energy-saving type, winter IAQ focused type. In the south region and Jeju, the appropriate effective aperture area appeared with αA10㎠/㎡, αA40㎠/㎡, αA60㎠/㎡ energy-saving type, winter IAQ focused type.
2) It was determined specifications of breathing wall with tiny holes and the air gap using heat․air transfer prediction model. And then it was reviewed ventilation of each types under the constant pressure. In thermal performance of breathing wall unit, dynamic U-value from above of 0.1Pa has met insulation standards of the region. It was reviewed sectional temperature distribution of inflow and outflow out under the constant ventilation. In inflow, it was confirmed increase effect of outside temperature. Under the same outside condition, the bigger effective aperture area is, the lower increase rate of inflowed outside temperature was.
3) The breathing wall system by applying it to the house of commons to examine the performance of the annual ventilation air flow characteristics of the wall to breathe in the simulation was calculated by entering the target with an annual performance compared with that of ventilation.
In energy-saving performance that corresponds to the energy saving type αA10㎠/㎡ (Central Region), 20㎠/㎡ (South Region, Island) housing model applied to winter indoor ventilation loss load acquire certain of the legal ventilation standard 0.7ACH compared with the mechanical ventilation, breathing in ventilation rate than 1.0ACH wall ventilation system reduces the load of the model was applied barrel loss decreased from 14.1% to a maximum of energy savings, respectively.
In this study, excessive ventilation was occurred when the large wind pressure operates in system. In this case ventilation loss load of breathing wall is higher than mechanical ventilation. If complements a structure such as the damper corresponding to wind pressure, I will expect improved performance by securing a more stable ventilation and constant indoor air.
In this study, it was designed breathing wall considered the effective aperture area according to regional ventilation condition and reviewed unit performance. It was evaluated annual ventilation performance of breathing wall system in an apartment and reviewed the heat loss the interior and confirmed an energy savings effect. The major results are summarized as follows.
1) To predict the natural ventilation of a prototype, the cases by region were identified with energy-saving type, winter IAQ focused type, annual IAQ focused type satisfying the terms of ventilation.
In the central region, the appropriate effective aperture area appeared with αA20㎠/㎡, αA50㎠/㎡, αA80㎠/㎡ energy-saving type, winter IAQ focused type. In the south region and Jeju, the appropriate effective aperture area appeared with αA10㎠/㎡, αA40㎠/㎡, αA60㎠/㎡ energy-saving type, winter IAQ focused type.
2) It was determined specifications of breathing wall with tiny holes and the air gap using heat․air transfer prediction model. And then it was reviewed ventilation of each types under the constant pressure. In thermal performance of breathing wall unit, dynamic U-value from above of 0.1Pa has met insulation standards of the region. It was reviewed sectional temperature distribution of inflow and outflow out under the constant ventilation. In inflow, it was confirmed increase effect of outside temperature. Under the same outside condition, the bigger effective aperture area is, the lower increase rate of inflowed outside temperature was.
3) The breathing wall system by applying it to the house of commons to examine the performance of the annual ventilation air flow characteristics of the wall to breathe in the simulation was calculated by entering the target with an annual performance compared with that of ventilation.
In energy-saving performance that corresponds to the energy saving type αA10㎠/㎡ (Central Region), 20㎠/㎡ (South Region, Island) housing model applied to winter indoor ventilation loss load acquire certain of the legal ventilation standard 0.7ACH compared with the mechanical ventilation, breathing in ventilation rate than 1.0ACH wall ventilation system reduces the load of the model was applied barrel loss decreased from 14.1% to a maximum of energy savings, respectively.
In this study, excessive ventilation was occurred when the large wind pressure operates in system. In this case ventilation loss load of breathing wall is higher than mechanical ventilation. If complements a structure such as the damper corresponding to wind pressure, I will expect improved performance by securing a more stable ventilation and constant indoor air.
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