need to determine the outdoor design conditions
need to determine the outdoor design conditions
(OP)
I need to determine the outdoor design conditions for HVAC system on board of CRUISE SHIPS.
I got hourly weather data from NOAA including air temperature, relative humidity and sea surface temperature for a large number of buoys in the TROPICAL OCEAN ( 1996 - 2007 ).
Does anyone know how to determine the outdoor design conditions from the statisycal analysis of hourly climatic data?
Thanks for any help.
I got hourly weather data from NOAA including air temperature, relative humidity and sea surface temperature for a large number of buoys in the TROPICAL OCEAN ( 1996 - 2007 ).
Does anyone know how to determine the outdoor design conditions from the statisycal analysis of hourly climatic data?
Thanks for any help.





RE: need to determine the outdoor design conditions
I'd just need a few years of field research.
RE: need to determine the outdoor design conditions
Take the "V" out of HVAC and you are left with a HAC(k) job.
RE: need to determine the outdoor design conditions
You can sort the data, scale 0 - 100% then get the 2% figure from the 98% highest temp and coincident wetbulb/RH. Do this for each of the years and average the numbers.
I'd still compare this to the ports.
RE: need to determine the outdoor design conditions
Take the "V" out of HVAC and you are left with a HAC(k) job.
RE: need to determine the outdoor design conditions
Patricia Lougheed
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RE: need to determine the outdoor design conditions
And what about sea surface temperature?
Thank you
RE: need to determine the outdoor design conditions
Just for your information, the reply you alluded to is not in line with the OP's question. The OP says he has the hourly weather data and he requires to get the outside design conditions. Though this task is not simple, it can be done with patience.
Like KiwiMace suggested, one has to calculate the cumilative frequency of occurance of DBT (or/and WBT) and calculate the corresponding mean coincidental WBT (or/and DBT). The standard convention is to select from 0.4%, 1% or 2% exceeding values depending upon the redundancy (of the enthalpy at the selected condition) level required during heat load calculation.
Regards,
RE: need to determine the outdoor design conditions
The usual problems I find with designs by engineers in the UK , Canada and the USA for my little island (with no published design conditions) is they do not properly account for the dewpoint of the ambient air, and they also tend to only consider the effect of the sun in July/August.
At least with a building orientations of windows are fixed.
Take the "V" out of HVAC and you are left with a HAC(k) job.
RE: need to determine the outdoor design conditions
Is the sea surface temp even relevant to the goings-on on the top deck of a cruise ship. This is high enough to have a climate of its own. Most of SE Asia [and all of AbbyNormal's little island] would be below this height above sea level.
RE: need to determine the outdoor design conditions
does the sea temperature explain why scotland is warmer than minnesota?
Take the "V" out of HVAC and you are left with a HAC(k) job.