fuels from microorganisms Flashcards
not all …….. generators are the same
biogas
………. generators make in small ……… they are …………… loaded up with ………. which is left to digest and the by products are cleared away at the end of each session
batch
batch
manually
waste
………. generators makes ……….. all the time waste is …………. ….. in and biogas is produced at a steady rate. …………. generators are more large scale production
continouse
biogas
continousely fed
continouse
what are the three things that are needed for a continouse and batch generator
raw materials to put in
an outlet for the digested materials
an outlet so that the biogas can be piped where needed
what are the 4 factor that need to be considered when designing a generator
cost , convenience , efficient , position
cost :
they are more expensive than batch ones because waste has to be mechanically pumped in and digested materials mechanicaly removed all the time
convenience
batch genertor are less convenient because they have to be continousely loaded emptied and cleaned
efficienty
gas is produced most quickly at about 35C if the tempture falls below this the gas production the gas production will be slower. generator in sime areas will need to be insulated or kept warm. by solar heaters. the generator shouldnt have any leeks or gas will be lost
position
the waste will smell during delivery so generaters should be sited away from homes the generator is also best location fairly close to the waste source
by using biogas has ………. & …………. effects
economic
enviromental
biofules are the …….. alternative to fossil fuels
greener
they are carbon …………..
nurtral
biogas dosnt produce what
sulfer dioxide
nitrogen oxide
sulfer dioxide and nitrogen oxide create what
acid rain
by treating human and animal waste what gass isnt released into the atmosphe
methane
