| 摘要 |
PROBLEM TO BE SOLVED: To save energy by recovering thermal energy from air conditioning exhaust gas and to enhance cleanliness of air by suppressing use of circulating air in air conditioning. SOLUTION: When a hollow body 3 formed of face members 1, 2 in the wall face, or the like, of a building 20 serves as an exhaust duct, conditioned air enters into an exhaust duct 3 after convecting through living spaces 21, 22, 23. When an air supply duct 4 is disposed in the exhaust duct 3, heat is exchanged between exhaust air and supply air through the wall face of the air supply duct. Thermal energy of exhaust air is thereby recovered to the air supply side and energy is saved by taking supply air into an air conditioner 6. On the other hand, exhaust air from the exhaust duct 3 is not recirculated but exhausted to the outside of the building. According to the system, dust, house dust, chemical substances, bacteria, fungi, virus, allergens, smoke, and the like, storing in the building are exhausted to the outside of the building and the building is filled only with clean conditioned air. |
