Recent content by cabalen

What are the design guidelines or criteria in the design of Fire Protection Piping?

09fromNJ, Use 10 ACH for exhaust air. Cheers!

Schola, Noise level should not exceed 90 dB(A) at a distance of 1 meter. Cheers!

Thanks TravisMack for being helpful and sharing your thoughts.

Thanks again Travismack, I have specified 750 gpm and 95 psi. I included some allowance since this are assumed values and they are subject to change during detailed design. What would be the size of the main FW pipe for the above specs? Thanks.

Thanks TravisMack,your info is helpful but we would like to provide maximum values for gpm and pressure because this is for conceptual study so, I think the maximum is better. Please consider the building as a 3-storey, Security building with an armory section. Would the armory room would...

Can anyone help me estimate the fire water demand and pressure required for an office building. We need this info as preliminary interface data for utility requirement. Any information is highly appreciated. Thanks.

What is the benchmark for the quality of chilled and condenser water? I believe it is measured in ppm of minerals but what type of minerals should we be removing to maintain the good quality?

Some use a specific range of velocity for duct sizing of main and branches. That is almost the same as equal friction method.

thanks abbynormal, that is really helpful!

its old freezer. thanks

Check put ASHRAE Std 62 for ventilation requirements and apply to load calculations. Compare with manufacturers equipment selection for maximum allowed outdoor air. - Thanks

What are the normal working pressures for R-12 refrigeration system (suction and discharge pressures)? Thanks

Try to check out ASHRAE Applications Handbook.

Try to air conditon the air to required storage temperature and provide humidity control if required. Try to checking out ASHRAE Applications Handbook.