please let me know the formula to calculte the cfm/person
please let me know how to calculate cfm /person
Ritu, I?m assuming you mean cfm/person of outside air for ventilation. You will need to use the method in chapter 6 of ASHRAE 62.1
Vikram Sami
CFM/person is given in ASHRAE 62.1 Table 6-1.
Two values are given in the table which affect your eQUEST input:
1) CFM/person
2) CFM/SF
The combination of the two values is your minimum OA ? see Equation 6-1 of ASHRAE 62.1.
Therefore, your eQUEST input should go something like this:
((#LR(?SPACE?, ?NUMBER-OF-PEOPLE?)*([CFM/PERSON])) + (#LR(?SPACE?, ?AREA?)*([CFM/SF])))/ (#LR(?SPACE?, ?AREA?)
Refer to ASHRAE 62.1 Table 6 for [CFM/PERSON] and [CFM/SF] values.
I hope this helps with your question. If anything is unclear, I?m sure the forum will clarify.
Thanks,
David Griffin
i want to know the value to be calculated for Rp(cfm/person
Does Rp not stand for pressure factor commonly used in calculating vestibule or door infiltration rate? If that is the case Rp is part of a formula that calculates total cfm infiltration PPH (people per hour) using the door.
Michael Hupel, B.Tech, CEM, LEED?AP
please let me know how to calculate cfm /person
Ritu,
I?m assuming you mean cfm/person of outside air for ventilation. You will need to use the method in chapter 6 of ASHRAE 62.1
Vikram Sami
CFM/person is given in ASHRAE 62.1 Table 6-1.
Two values are given in the table which affect your eQUEST input:
1) CFM/person
2) CFM/SF
The combination of the two values is your minimum OA ? see Equation 6-1 of ASHRAE 62.1.
Therefore, your eQUEST input should go something like this:
((#LR(?SPACE?, ?NUMBER-OF-PEOPLE?)*([CFM/PERSON])) + (#LR(?SPACE?, ?AREA?)*([CFM/SF])))/ (#LR(?SPACE?, ?AREA?)
Refer to ASHRAE 62.1 Table 6 for [CFM/PERSON] and [CFM/SF] values.
I hope this helps with your question. If anything is unclear, I?m sure the forum will clarify.
Thanks,
David Griffin
i want to know the value to be calculated for Rp(cfm/person
Does Rp not stand for pressure factor commonly used in calculating vestibule or door infiltration rate? If that is the case Rp is part of a formula that calculates total cfm infiltration PPH (people per hour) using the door.
Michael Hupel, B.Tech, CEM, LEED?AP