BOILERS : Depending on the capacity of plant these boilers are selected . Steam is
important factor in bread production plant . Steam provides a moist and humid
dough which has yeast . Yeast growth releases co2 which then form the texture of the
bread as these gas are entrapped in dough.
Steam is also used to heat water which is then circulated into jacketed mixers ,
Hot water is required to maintain viscosity of fat , sugar solution and butter .Dough
Steam is also used in biscuit plant to moist the cutting webs so as to get better cutting
of dough sheets. Hot water are widely used for cleaning of utensils in bakery
Smaller boilers are used in smaller bread plants these are called "" baby boilers "'
HOT WATER GENERATORS: These hot water generators are replacing boilers for hot
application . These have shell in which water flows and are heated by flue gases which
flows through anothers set of tubes . Water are circulated through pumps into
pipelines which are insulated .
HEATERS: For smaller application immersion heaters are used heat water or fat for oil
machines . Ratings are from 2kw to 6kw as per the requirement . Heater elements are
enclosed s.s pipes and are then immersed directly or indirectly to heat water or melt fat
or butter .
HEATING EQUIPMENTS IN BAKERY