- #1
matt621
- 29
- 3
And does it matter if you are going from 200F to 100F or 500F to 400F? ie, is it temperature dependent?Thanks
How many BTU/hr needed to cool 500 CFM of air 100F degrees?
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SUMMARY
To cool 500 CFM of air by 100°F, approximately 1.08 BTU/hr is required per degree of cooling, resulting in a total cooling requirement of 108 BTU/hr. The cooling efficiency is slightly temperature dependent; for instance, at 500°F, the required BTU/hr increases by about 5% compared to lower temperatures. For precise calculations, users should refer to specific heat tables or equations that account for varying temperatures.
PREREQUISITES- Understanding of BTU (British Thermal Unit) calculations
- Familiarity with CFM (Cubic Feet per Minute) airflow measurements
- Knowledge of specific heat and its temperature dependency
- Ability to interpret thermodynamic tables and equations
- Research specific heat tables for various temperatures
- Learn about thermodynamic principles related to cooling systems
- Explore HVAC design calculations for airflow and cooling requirements
- Investigate temperature-dependent cooling efficiency in HVAC systems
HVAC engineers, mechanical engineers, and anyone involved in designing or optimizing cooling systems for air handling applications.
- #2
russ_watters
Mentor
- 23,829
- 11,305
It takes approximately 1.08 BTU/hr to cool a CFM by 1 degree, so I'll let you calculate that. 
For the second part, no, it isn't quite constat over large temperature differences. At 500F, it is only about 5% larger. You can google for tables and/or equations for specific heat at various temperatures.
For the second part, no, it isn't quite constat over large temperature differences. At 500F, it is only about 5% larger. You can google for tables and/or equations for specific heat at various temperatures.
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