Hello,
I want to simulate the thermal performance for typical houses in the UK (or
England). National calculation method (http://www.ncm.bre.co.uk) is for
buildings other than dwellings. But hourly schedules for equipment gains,
lighting, and occupancy are available from this database. For example,
Dwell_DomBed(An area primarily used for sleep), Dwell_DomLounge (The main
reception room of the home), etc. I am not sure whether these schedules are
appropriate for the application of building simulation in typical UK houses? If
not, any other database may be avaiable for the UK houses? I have checked the
Standard Assessment Procedure SAP and there are not detailed hourly schedules
for this purpose.
Thanks a lot,
Jin
+++ Jin Minming [2010-09-06 16:24 +0000]:
Neither am I without seeing them. What sort of times/outputs do they
specify? Given that info we should be able to see if they were wildly
innapropriate of not. They are presumably based on US data?
I'm not aware of other data. PHPP must have some numbers in it for
this stuff, which would at least be european-based, if not
specifically UK. Lighting times certainly need to be
lattitude-adjusted as we get a lot of dark-hours in comparison to
central europe.
Wookey
The activity data in National Calculation method is very suitable for building
energy simulation and they are hourly schedules. DesignBuilder also has the
same data. I do not know whether they are based on US or not. It seems they are
more suitable for dormitory.
Maybe there are large variations of occupancy behaviour for the residential
buildings. So, the hourly schedules for occupancy, equipment, and lighting are
not available for UK typical houses.
Jim
I tend to agree on the whole with Jin.
The NCM should give you a good basis for comparison purposes but
obviously if you are looking in more detail you may want to make your
own custom profiles and schedules.
It comes from gathered data by the BRE over many years essentially or
at least the commercial bits certainly do.
You may want to check out the SAP requirements which may also have
some information that will be useful.
Most software now has a number of inbuilt domestic scehdules. I know
both Designbuilder and IES do so they're normally a good starting
point of reference.
Dr Paul Carey
To the group,
I am starting an HVAC design project at Tacoma Washington (I live in
Nebraska). I can look up the ASHRAE design conditions, but I am wondering if
somebody can give me a clearer picture of the climate. (This goes with the
change in thinking between designing for worst conditions and designing for
year around energy savings.)
I am looking for things to consider in my design.
Examples: Here in Nebraska it gets really cold and hot and humid. Due to
the jet stream the temperature can swing from the 20s to the 70s within a
week so the design must be able to react.
I also finished a design in Colorado which I know is arid and dry.
Humidity usually a problem.
I don't know exactly what I'm looking for, I am just not familiar at
all about what to expect. I think the humidity issue is something I would
like to know better. (this may determine if I go with DX or chilled water.)
Thank you for any help,
John Eurek PE, LEED AP
John - The Tacoma climate is very similar to Seattle. The winters are
cool and wet, and the summers are cool and dry. The proximity of the
Puget sound keeps the humidity in the comfort zone in general. The
climate is definitely heating dominated, and cooling is unnecessary for
most occupancies, as long as some moderate amount of attention is paid to
the envelope design. A useful climate visualization tool is "climate
consultant" a free software that you can download here:
http://www.energy-design-tools.aud.ucla.edu/
The psych chart is particularly useful for helping to identify strategies
for mechanical systems.
Morgan Heater, PE, LEED AP
Yeah, Morgan is right. We don't have humidity, we have rain. I can get hot
for up to a week in the summer and if you are in a commercial building your
clients will be very unhappy if you don't have AC. A very good climate for
heat pumps VRV/simultaneous heating and cooling/or whatever, depending on
your usage and footprint.
Carol