tailieunhanh - Cung cấp nhiệt và thông gió

Tham khảo tài liệu 'cung cấp nhiệt và thông gió', kỹ thuật - công nghệ, kiến trúc - xây dựng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | HEATING _ 130 w m2 385 m2 2700 m2 90 w m2 550 m2 3900 m2 50 w m2 1000 m2 7000 m2 3 100 200 300 50 kW 400 5 350 kW 2 h 30 kW ominal eat boiler roorn OUTPUT boiler room with 2 doors Central heating boilers with a heat output than 50 kW require individual boiler rooms Boiler room min. 8 m3 needed for heat output 50 kW 3 Boiler room with 2 doors min. 22 m3 needed for heat output 350 kW Heating systems are distinguished by the type of energy source and type of heating surface. Oil firing nowadays light. Advantages low fuel costs relative to gas approx. 10-25 not dependent on public supply networks fuel oil is the most widespread source of heating energy easy to regulate. Disadvantages high costs of storage and tank facilities in rented housing space required for oil storage reduces rent revenue where water protection measures apply or there is a danger of flooding this form of heating is only possible if strict regulations are observed fuel paid for prior to use high environmental cost. Gas firing natural gas is increasingly being used for heating purposes. Advantages no storage costs minimal maintenance costs payment made after usage can be used in areas where water protection regulations apply easy to regulate high annual efficiency may be used for individual flats or rooms minimal environmental effects. Disadvantages dependent on supply networks higher energy costs concern about gas explosions when converting from oil to gas chimney modifications are required. Solid fuels such as coal anthracite lignite or wood are rarely used to heat buildings. District heating stations are the exception since this type of heating is only economical above a certain level of power output. Also depending on the type of fuel used large quantities of environmentally damaging substances are emitted so that stringent requirements are laid down for the use of these fuels protection of the environment . Advantages not dependent on energy imports low fuel costs. Disadvantages high operating