Boiler Chimney Design Calculation

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.

Boiler chimney design calculation.

T theoretical draft inches of water b barometric pressure inches of mercury h effective height of chimney feet t. 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. 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. O outside temperature ºf 460 t.

4 3 boller efticiedcy the ratio of heat used in the boiler to. 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. Design calculation sheet for. Chimney vent capacity chart btu h and kw.

Design velocities of larger furnaces should not exceed 10 m s. 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. Calculation of burner heat duty and fuel firing rate.

Using desired steam parameters calculate the enthalpy of steam to be generated. Thermodyne chimney draft calculator. 5 0 design calculations load data 1 00 281 53214 boiler foundation plan sketch. Boiler stack diameter project title.

2 x 80tph 65 barg 480 0c client. Required chimney area can be calculated as. While doing the flue gas steel stack design calculations you should consider the design formulas and local pollution control norms. A q v 3 where.

Chimney height is measured in m. View stack sizeing xls from chemistry 344 at nanjing university. Altitude refer to table 2 for appliance outlet temperatures. M mean chimney temperature ºf 460 refer to table 1 for barometric pressure vs.