Honeybee ‘ENERGY’ Part 7 | HVAC – an Introduction | Ladybug tools 1.4.0

hey hello welcome back glad you made it back here 
it is hot and that's why i changed my background   because i thought i'd give you 
some the feeling of some fresh air   with water and shading in the background best time 
to talk about heating cooling air conditioning air   conditioning and ventilation systems in honeybee 
i'm by far not an expert on this i'm by far an   expert on this and by far not an expert in this 
i'm i'm not an expert on it note i can only   uh basically show you how to apply the tool to 
your room and uh to your honeybee model honeybee   room honeybee model but yeah if you are an 
engineer and you already have already have some if   you're an if you are an engineer and you already 
have some experience with these things then please   help us or it's going to be very easy for you 
to understand because it's very straightforward   for the people who like me who never worked with 
these systems before it's gonna be a bit more   intimidating but we will try our best to to go 
through and you know this is these are the it's   could be some of these tools where i procrastinate 
until the last moment to test it out and then just   to realize that it's actually not that difficult 
before we jump in channel member shout outs i'm so proud third channel member welcome to 
the team mr mohsin hassan i'm really proud   and i completely missed it i supposed to 
do this shout out already in the last video   i do it now apologize and thank you for 
joining it means a lot to me together with   my two other channel members coma45 and 
melvina you partly make this video possible and   uh it's i'm on the i'm on the road to sustain 
this channel a bit better again thanks a lot   mohsin also has a channel a video up there five 
years ago one video well doesn't really matter   you're here this great part of the team if 
you have any question please let me know and   that's why you joined i can always help you 
or at least i will try if i can and of course   so channel members will be prioritized when it 
comes to questions and answers from my site and   i'm also always happy to of course um you know 
help out with your projects and if you have any   issues there and if you have questions i'm i'm 
more than happy to to check it out and talk and   discuss it with you guys if you want to become a 
channel member please go to my to my channel page   and there you can find a button membership 
or join i think join that's basically it   again thanks a lot and let's jump into 
honeybee okay well we haven't really   checked out our energy balance in the previous 
video we looked at schedules and today we will   look at air conditioned systems i will delete this 
stuff here because we we covered schedules now   and here this also schedules lots of 
stuff flying around here here we have our   program and very quickly before 
that before we jump into hvac   which is heating ventilation air conditioning and 
cooling very quickly in loads we haven't touched   everything here yet some parts were actually part 
of the creating the program type so for example   the infiltration we discussed uh in length 
and then we also discussed um the set point   and now ventilation there's again there's 
a ventilation edition didn't really discuss   ventilation so we haven't really touched on that 
that we could add this here but um i thought it's   it's very straightforward we discussed a lot 
here and the only thing we might want to revist   at some point is the the daylight control that 
is something you actually apply to your rooms   similar to these um heating and ventilation and 
air conditioning systems you actually apply them   to a room and rather than to a program so you 
see you actually you go with your room in here   and then you apply whatever is happening in that 
tool to the room or to a set of rooms so that's   somehow a bit of the difference between program 
type and these systems all right so just before we   jump into the heating ventilation air conditioned 
cooling systems um just a word on it again i'm not   an expert really it's for me it's actually pretty 
hard to understand everything as an engineer you   might have a better grasp really but we will try 
our best it's it's relatively simple on how you   apply it but then what it does is it's it's a bit 
different but yeah there are different systems   and we can we can have a look what they do and 
now for real so i try to make this video pretty   short because it's not a big deal really except 
that you have to have an understanding of these   systems there they are partly explained except for 
the first one i'm not 100 sure what that means but   let's see basically it just lists different uh 
air condition systems it's they're all the same   really to apply you can apply them to one room or 
to a set of rooms there's no real not really any   difference on how you apply these it's more about 
the knowledge on what system you want to use or   can use or and that's but we can go through one by 
one and see what the difference are the first one   for me it seems like it's a it's a an ideal air 
system which you can apply it to again you can   apply these to one room or several rooms or to 
do a whole honeypot honeybee model if you want   so ideal air i was looking online and i think 
i found the right description talking about the   energy plus idf objects and it says here the 
simplest piece of zone equipment is the zone   hvac ideal loads air system component it is used 
in situations where the user wishes to start the   performance of a building without modeling a full 
hvac system in such a case the ideal loads air   system is usually the sole conditioning components 
the user does not need to specify air loops water   loops etc all that is needed for the lda all that 
is needed for the ideal system are zone controls   sound equipment configurations and the ideal loads 
system component meaning okay it's a customized   simplified version of air conditioning or air 
conditioning system which you can try to work with   and actually as you can see you have only one 
mandatory input is the rooms and the rest is all   it's not it's just optional and you could go 
now through each of these if you hover over it   actually tells you exactly what um the input will 
what effect the input will have so for example the   economizer text to indicate the type of 
airside economizer used on the ideal air   system economizers will mix mix in a great amount 
of auto air out of air to cool the zone the room   rather than running the cooling system when the 
zone needs cooling and the auto air is cooler than   the zone choose from the option speed sorry i need 
to read it properly you know for you to understand   economizers will mix in greater amount of auto 
air to cool the zone rather than running the   cooling system when the zone needs cooling and the 
outdoor air is cooler than the zone means that it   will only cool if the outdoor is not the outdoor 
air is not sufficient cooling it's not sufficient   to cool the room then it will actually then it 
will run the cooler the cooling system that's how   i understand it okay but on how you apply it it's 
very simple so we could apply that to everything   to all our rooms and as you know we have our rooms 
our different areas here these are all different   rooms of the building we combined these and then 
apply stuff to it and then solve the adjacency   of of these combined room room blocks and here 
we we applied the windows and now we could in   addition to that we could apply this uh system 
this uh honeybee ideal air system i just plug this   in here it's turns green means there's no problem 
and now if i of course put this in here it will   rerun the whole calculation and now i did this too 
early because i wanted to see if there's a change   and nothing went red it means it seemed it worked 
the question is really what did it change anything   or what what did it actually change and we will go 
through results later in another video in the next   video but just very quickly there is this tool 
here called uh honeybee read hvac sizing that   you can apply to your output from your openstudio 
model so the output of your openstudio model the   sql output here can apply this this here and now 
you see that there was some so it has some some   sort of output so for example okay bathroom 
bedroom and suite entry hallway and so and so   on so that these are all the rooms and then we 
have peak cooling heating and component types   and you can see here ideal load air 
system district heating company properties   component properties and values component values 
okay we will go for this um in another video it's   just wanted to show you that it definitely hadn't 
it had some sort of effect on the rooms but don't   ask me everything else we will look we will 
look up uh later on but i could put this here   and um so again yeah i will just leave this here 
and we will discuss that at some point now we have   several of these systems so instead of using this 
system here we could also use a different system   and it works exactly the same just apply the 
room or rooms and then go into our honeybee model   and we could of course um apply it only for a 
certain section you know could only apply certain   hvac system to only this portion or to only once 
one specific room i will not i will not delete   it now just first read what's written here 
all air system provide both ventilation and   satisfaction of heating and cooling 
demand with the same stream of warm   cool air such they often grant tight control 
over zone humidity however because such   systems often control often involve the 
cooling of air only to reheat it again   they are often more energy intense than systems 
that separate ventilation from the meeting of   thermal loads okay so a different system basically 
and here you also need to provide the the type the   system type as you remember here we had we didn't 
have to add any additional information but here   we need to provide a system type and system 
types are here the all air hvac templates so   we need to have this and from here we can choose 
the system we want to apply and i mean don't ask   me i have no clue there's loads of different 
systems and i can really just choose whatever   so you can choose your system the system you have 
in your building or if you build a new one then   you will probably think about what kind of system 
you want and then you can apply that now it turned   great it means we can start to use it and now 
i can just uh run it through my honeybee model   yeah so not that easy it's actually i i 
got a problem with this realizing that   in my energy balance now cooling and heating 
actually they kind of interfere with my with this   tool so if i if i want to have cooling calculated 
with my low balance then i'm getting an error   yeah i'm already falling into a trap now 
realizing okay if i apply this hvac system   to my model then kind of interfere with what i set 
up as a typology for my rooms with the cooling and   heating so cooling and heating actually 
creates here a problem i get an error so if i if i disconnect cooling it actually turns 
gray and it works again kind of makes sense that   my hbsc system interferes of course now with the 
output here the cooling and heating because i also   apply to all the rooms and that overwrites 
anything i have said before as cooling and   heating system for a tutorial is probably way 
too 20 minutes way too short to go for each of   these different systems so that's something you 
need to check yourself really and uh just try to   understand what system do you have at home if you 
i mean exam that would be the best example now you   choose a system in place and test that in order to 
learn how what kind of systems are there and how   they work i can't really tell you more i just i'm 
also just uh trying to understand it nevertheless   so we moving on there is several more 
again so this is the the all air template   i kind of understand what it's what it does and 
and but then how it works with the opel studio   and this we still need to find out um so with the 
energy balance that that would be interesting so   we're kind of losing this these numbers here so 
we're losing the energy balance here but gain   it back here so trying to get a grasp on it 
but uh let's step by step you know one we can   only solve always just smaller components of 
a problem in order to solve the whole problem   i would delete this one because with this we don't 
need and um again always read what's written here   it's very important you get an understanding 
what that tool actually does and now we can   try a different one this is the do osa hvac 
system apply a dedicated outdoor air system d-o-s-d-o-a-s system separate minimum ventilation 
supply from the satisfaction of heating   plus cooling demand ventilation air tends to be 
supplied at neutral temperatures close to room air   temperature and heating and cooling loads are met 
with additional pieces of zone equipment fan coil   units as an example because doas systems only have 
to cool down and reheat the minimum ventilation   air they tend to use less energy than all assets 
they also tend to use less energy to distribute   heating plus cooling by popping probably pumping 
by pumping around hot cold water or or refrigerant   instead of blowing hot or cold air however they 
do not provide as good of control over humidity   and so they may not be appropriate for rooms with 
high latent loads like auditoriums kitchens and   land roommates laundromats okay so you see there 
are different systems i'm learning a lot here so   we could apply this it's going to be the same 
again so we we put our rooms we need to again   choose a system type again there's probably 
again loads of it hundreds of different systems   okay there's a there's a bit less again i 
mean okay let's choose any of these really   turn this off i'm gonna i'm gonna apply my system 
and then i can apply it to the rooms and that's   it's always the same it's always the same game 
really uh it's just the matter of like what   system you want to apply or you want to study 
and now again it's calculating again we will   find out how we can apply this uh to the 
energy balance because at the moment that   that heating and cooling is actually missing 
it's currently separated so would be interesting   how that works and the last one no there are two 
more so this is again again another type applied   template system that only supplies heat heating 
and or cooling no ventilation to happy rooms these   systems are only designed to satisfy heating 
and cooling demand and they cannot meet any   minimum ventilation requirements as such these 
systems tend to be set used in residential storage   settings where meeting minimum ventilation points 
may not be required or the density of occupation   is so low that infiltration is enough to meet 
fresh air demand okay so again another system   here we can again have templates we can 
choose from a lot of different systems here um i'm not re-running this now you by 
now you should know how it works   and then we also have here s hw system um so 
this is a bit this is something different apply   a template service hot water system to honeybee 
rooms note that the rooms must have hot water   loads assigned to them in order for them to be 
connected to the system to the system um okay so   that would be you know the question if i use this 
one let's choose the electric water heater okay   this is my system i can apply all the rooms but i 
i assume that it only then has an effect on rooms   which have water loads applied which 
are probably only cert only some of them   i guess the kitchen for example in that 
case in our case we haven't applied any   other program or any other specific program to 
the other rooms so i can imagine that either   either my apartment mid-race apartment program 
has applies water loads to all the rooms   i doubt that but yeah we can try we can try and 
also see how that has an effect on these on the   cooling and heating that would be interesting 
i'm not sure if it makes sense to replace it or   is this a tool which you use together maybe 
also possible but let's uh remove this here   just for tests in order to test it and we can 
run that again yeah this worked and now ah okay yes that already of course has an effect than 
on the hot water let's see if i can apply the   cooling here yes i can heating yes okay so this 
is a different it's a completely different system   which only has an effect on the on the water   so i assume i could then run this together with 
another with this with any of these hvac systems crazy crazy stuff i think i really 
need to really read more about it but i   i assume you know now how to apply it to your 
model into your rooms and if you're an engineer   you probably know way more about it and uh should 
be fairly easy for you to to grasp all right   okay hot hot hot hot i don't have a system i only 
have hot and cold water and heating yeah i have   heating but i don't have cooling that's the issue 
anyway thanks for joining again next time we will   look into we finally will look into results and 
simulations and stuff like that and then we will   hopefully also get a bit of a better understanding 
of uh these hvac system systems h v a c systems   heating and cooling again if you know more help us 
would be nice to get a bit a better understanding   of course we could all read a bit more but then 
at the same time it's not that easy to find proper   text about it online i guess their 
books and maybe in the open studio   documentation you can read more about it anyway 
thanks for watching and see you next time you

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