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Cooling load calculations may be used to accomplish one or more of the following objectives: a) Provide information for equipment selection, system sizing and system design. b) Provide data for evaluating the optimum possibilities for load reduction.
The HVAC load calculation shows you the exact amount of BTUs a certain space requires for sufficient heating and cooling. It identifies the square footage of the room to determine the capacity—BTUs per hour—needed to reach the desired indoor temperature.
Cooling Load: The higher tonnage and airflow values correspond to apartments in hotter/more humid climates with larger amounts of external fenestration (windows and/or skylights).
assumed. The sur-face heat loss factor of 5.5 Btu/Hr/Sq.Ft.°F. in the equation below assumes a wind veloc-ity o. 3.5 mph. If a wind velocity of less than 3.5 mph is used, multiply equation by 0.75; for 5.0 mph multiply equation by 1.25; and for 10 mph multiply equati. U/LB.°F. HHEAT-UP = HEAT PI. LBS./GAL. GPH × 8.34. KB. KV . KSH. P. �.
calculating design cooling loads—the heat balance method (HBM) and the radiant time series method (RTSM)—in a thorough, applications-oriented approach that includes extensive step-by-step examples for the RTSM.
Use this formula to calculate BTU cooling required: Formula BTU = Flow Rate In GPM (of water) x (Temperature Leaving Process - Temperature Entering Process) x 500.4 *Formula changes with fluids others than straight water.
Designers should consider performing cooling load calculations for rooms and zones with all of the internal gains fully on (e.g. maximum occupant capacity) in order to account for this design condition, regardless of how infrequent that scenario may occur.
