Design of boiler houses operating on liquid fuel – oil fuel and diesel fuel boiler houses
Nowadays there is a vast number of equipment which can help you to solve heating tasks both for a private house and industrial facility or city district. Among this variety, a high position is held by the equipment operating on liquid fuel
. This is not to say that they are better or worse than boilers operating on gas or electric power. Each of these types has their own peculiarities which allow to maximum advantage to use the definite equipment for the definite case.
Liquid fuel boiler houses
(operating on fuel oil, diesel fuel or oil) be widely distributed in various spheres — housing and utilities infrastructure, at industrial facilities and individual construction.
The liquid fuel boiler houses can be absolutely irreplaceable at those facilities where it is difficult or impossible to use other types of fuel.
The basic disadvantages are as follows:
- high fuel cost
- considerable facility maintenance expenses (including logistics) in comparison with the expenses for the boiler houses operating on natural gas
- severe wear of heating surface of boiler units (combustion of liquid fuel generates toxic enough wastes consisting of sulfur — they deposit on the external heating surfaces of the boilers decreasing heat transfer)
- lower ecological safety than at combustion of gas fuel
High efficiency and the fact that use of this type of fuel does not need to get approvals can be related to the advantages. Thus, the whole process of construction of liquid fuel boiler houses is faster due to more prompt approval of the design documentation.
Fuel oil, diesel fuel or oil shall be stored in special aboveground or underground reinforced concrete, metal or plastic tanks of various volume.
The principal diagram of fuel oil facility of a large boiler house is as follows: from railway tanks or trucks located at the rack during loading, fuel oil is supplied to a discharge channel along a portable overflow launder and then along a discharge pipe – to a receiver tank. From there fuel oil is supplied to a coarse filter along fuel oil ducts and to fuel oil storage tank through fine filters by pumps. From the fuel oil storage tank through fine filters and heaters fuel oil is supplied to boiler unit burners by pumps. A part of heated fuel oil is sent using recirculation line to fuel oil storage tank for heating of fuel oil located there. Fuel oil recirculation is intended for prevention of fuel oil hardening in pipelines in case of decrease or stop of its consumption.
Integrated and attached individual liquid fuel boiler houses are provided with fuel storage, located outside the room of the boiler house and heated buildings, with capacity designed taking into account storage conditions of at least 5-day fuel consumption determined for the mode corresponding to heat load of the boiler house in the mode of the coldest month. The quantity of tanks is not regulated.
Design of gas fuel boilers