Boiler Chimney Design Calculation

Height of chimney draft developed by chimney is directly proportional to the height of the industrial chimney so height the chimney more will be the draft.

Boiler chimney design calculation.

Design and construction of steel chimney code of practice part t mechanical aspect first revision 1 scope 4 terminology 4 2 blaakiagoffplate an imperforate plate fitted immediately beneath the inlet of a chimney to prevent the waste gases reaching the lowerportion of the chimney. Design calculation sheet for. Boiler stack diameter project title. 2 x 80tph 65 barg 480 0c client.

Multiplying enthalpy with the rated steam generation obtain the total heat value of steam at rated steaming boiler heat duty boiler heat duty is expressed as mkcal hr or mw or hp. Thermodyne chimney draft calculator. Al moiz industries ltd project. A q v 3 where.

5 0 design calculations load data 1 00 281 53214 boiler foundation plan sketch. T theoretical draft inches of water b barometric pressure inches of mercury h effective height of chimney feet t. Using desired steam parameters calculate the enthalpy of steam to be generated. Chimney height is measured in m.

Figure 1 quantity unit dia of stack d 6 00 m dia. Chimney vent capacity chart btu h and kw. O outside temperature ºf 460 t. Altitude refer to table 2 for appliance outlet temperatures.

While doing the flue gas steel stack design calculations you should consider the design formulas and local pollution control norms. A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s in general 1 kw boiler heat requires 1100 mm 2 of chimney area. View stack sizeing xls from chemistry 344 at nanjing university. M mean chimney temperature ºf 460 refer to table 1 for barometric pressure vs.

Boilers or furnaces equipped with induced draught fans should have a chimney efflux velocity of not less than 8 m sec at full load for boilers rated up to 13 600 kg hour increasing to a maximum of 15 m sec at full load for boilers rated at 204 000 kg hour. Of raft d 13 00 m area of raft a 3 14 xdxd 4 132 67 m 2 section modulus z 3 14xdxdxd 32 215 58 m 3 height of soil above raft h 4 00 m thickness of the raft t 2 00 m height of pedestal h1 4 50 m. 4 3 boller efticiedcy the ratio of heat used in the boiler to. Design velocities of larger furnaces should not exceed 10 m s.