Page 37 - Energy Recovery Ventilation

Indoor Air Quality

Certification System and Related Regulations

Ministry of Enforcement Regulation of the Indoor Air Quality Management Act [Presidential Decree No. 33479, revised in 2023. 5. 23.]
Environment
Article 1 (Purpose) This law aims to protect the health of citizens using multi-use facilities, newly built apartment complexes, and public transportation vehicles and to prevent
environmental harm by properly maintaining and managing the indoor air quality of these facilities.
Article 2 (Applicability) ① In the parts other than each subparagraph of Article 3, Paragraph 1 of the Indoor Air Quality Management Act (hereinafter referred to as the “Act”),
“those of a scale prescribed by Presidential Decree” refers to facilities that fall under any of the following subparagraphs. In this case, the total floor area of a facility
consisting of two or more buildings shall be the sum of the total floor areas of the individual buildings.
1. All underground stations (including entrances, waiting rooms, platforms, and transfer passageways, along with their associated facilities)
2. Underground shopping areas with a total floor area of 2,000 square meters or more (including facilities located in the basements of above-ground buildings). This
includes cases where the combined total floor area of two or more connected underground shopping areas is 2,000 square meters or more.
3. Waiting rooms in railway stations with a total floor area of 2,000 square meters or more
4. Waiting rooms in passenger bus/car terminals with a total floor area of 2,000 square meters or more
5. Waiting rooms in port facilities with a total floor area of 5,000 square meters or more
6. Passenger terminals in airports with a total floor area of 15,000 square meters or more
7. Libraries with a total floor area of 3,000 square meters or more
8. Museums and art galleries with a total floor area of 3,000 square meters or more
9. Medical institutions with a total floor area of 2,000 square meters or more or with 100 or more beds
10. Postnatal care centers with a total floor area of 500 square meters or more
11. Elderly care facilities with a total floor area of 1,000 square meters or more
12. Childcare centers with a total floor area of 430 square meters or more
12-2. Indoor children's play facilities with a total floor area of 430 square meters or more
13. All large-scale retail stores
14. Funeral halls with a total floor area of 1,000 square meters or more (limited to facilities located underground)
15. All movie theaters (limited to indoor movie theaters)
16. Academies with a total floor area of 1,000 square meters or more
17. Exhibition facilities with a total floor area of 2,000 square meters or more (limited to indoor facilities)
18. Business facilities for the operation of Internet computer game facilities with a total floor area of 300 square meters or more
19. Indoor parking lots with a total floor area of 2,000 square meters or more (excluding mechanical parking lots)
20. Office buildings and business facilities with a total floor area of 3,000 square meters or more
21. Buildings used for two or more purposes (as defined under Article 2(2) of the Building Act) with a total floor area of 2,000 square meters or more
22. Indoor performance venues with seating for 1,000 or more
23. Indoor sports facilities with seating for 1,000 or more
24. Bathhouse business facilities with a total floor area of 1,000 square meters or more
③ In the parts other than each subparagraph of Article 3, Paragraph 2 of the act, “scale prescribed by Presidential Decree” refers to 100 households.
④ In Article 3, Paragraph 3, Item 3 of the Act, “vehicles prescribed by Presidential Decree” refers to high-speed intercity buses and direct intercity buses among the cars
used in the intercity bus transportation business under Article 3, Item 1 (d) of the Enforcement Decree of the Passenger Transport Business Act.
Ministry of Land, Regulations on Facility Standards for Buildings [Ministry of Land, Infrastructure and Transport Decree No.882, 2021. 8. 27.]
Infrastructure and Transport
Article 11 ① Houses or buildings falling under any of the following items that are newly built or remodeled in accordance with the provisions of Article 87, Paragraph 2 (hereinafter
referred to as “newly constructed apartment houses, etc.”) must install natural ventilation facilities or mechanical ventilation facilities to ensure ventilation occurs
at a rate of at least 0.5 times per hour
1. Multi-unit housing with 30 or more units
2. A building in which housing is constructed as part of the same building with other facilities, and the housing portion has 30 or more units.
② When installing natural ventilation facilities in newly constructed residential buildings or similar, the adequacy of the natural ventilation facilities to meet the
ventilation frequency under paragraph (1) must be reviewed by the Local Building Committee pursuant to Article 4 of the Act. However, in the case of newly
constructed residential buildings or similar, natural ventilation facilities that have undergone performance testing according to the ventilation performance testing
method specified in the Korean Industrial Standards (hereinafter referred to as "Korean Industrial Standards") for natural ventilation facilities (KSF 2921) and are
installed with a length exceeding that specified in Annex 1-3 shall be exempted.
③ When installing natural ventilation facilities or mechanical ventilation facilities in newly constructed residential buildings or similar, they must comply with the
standards specified in Annex 1-4 or Annex 1-5.
④ The mayor of a special city, metropolitan city, special autonomous city, or special autonomous province, or the mayor, county executive, or district office head (referring
to the head of a district office in a local government designated as an autonomous district, hereinafter referred to as the "permitting authority") may recommend the
installation of natural ventilation facilities or mechanical ventilation facilities to ensure that ventilation occurs at a rate of at least 0.5 times per hour for buildings that
have fewer than 30 housing units and for buildings that are constructed as buildings other than housing units but have fewer than 30 housing units.
⑤ When constructing multi-use facilities, the required ventilation amount for multi-use facilities and each facility is as specified in Annex 1-6. The structure and
installation of the mechanical ventilation facilities to be installed must comply with the following criteria.
1. The capacity standard for mechanical ventilation equipment in multi-use facilities shall be calculated based on the ventilation volume/rate per person using the facility.
2. Mechanical ventilation equipment shall ensure the distribution of air supplied to multi-use facilities is as even as possible to minimize variation in indoor airflow.
3. Blowers installed in an air supply system, air discharge system, air intake/exhaust ports, etc., shall not have a structure that reduces fan performance due to
external air currents.
4. The air supply system or air intake openings that supply outdoor air shall be equipped with equipment that can effectively block the entry of particulate and
gaseous pollutants from the outside, such as removal and filtration devices. This equipment shall also have a design that allows easy cleaning, maintenance, and
replacement of removal and filtration devices.
5. The air exhaust system and exhaust openings shall be installed at locations where the discharged air does not directly enter the air supply system and air intake openings.
6. When determining the efficiency and performance of equipment, devices, and products that make up the mechanical ventilation system, matters not specified in
these regulations shall comply with the Korean Industrial Standards for the relevant items.
Ministry of School Health Act Enforcement Regulations [Ministry of Education Decree No. 270, Revised on 2022 6. 29. (Partial Amendment)]
Education
A. Ventilation Control Standards
Ensure that ventilation windows or mechanical ventilation systems are operated regularly to achieve an air exchange rate of at least 21.6 cubic meters per hour per
person.
B. Ventilation System Structure and Installation Standards (limited to cases where structure and installation standards for ventilation equipment are established)
1) Ventilation equipment must be installed with a capacity that can bring in sufficient outside air and exhaust sufficient inside air to meet the air quality standards of the
school building.
2) The capacity of ventilation systems in classrooms shall meet standards suitable for the ventilation control standards.
3) Equalize the distribution of air entering the school to ensure even circulation of indoor air.
4) When planning centrally managed ventilation facilities, ventilation ducts shall be made of materials that do not pollute the air.

37 ENERGY RECOVERY VENTILATION