ESCO Air Conditioning Practice Exam 2025 – Complete Study Resource

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Question: 1 / 400

The temperature rise method for determining airflow is represented by which formula?

CFM=BTU / (0.24 x delta T)

CFM=BTU / (1.08 x delta T)

The temperature rise method is used to calculate airflow in a heating or cooling system. This method takes into account the temperature difference, or delta T, between the supply and return air, as well as the heat energy, measured in BTUs or Kilowatts, of the system. Option A uses 0.24 as the constant, which is incorrect and would lead to an inaccurate calculation. Option C uses KW instead of BTUs, which is also incorrect. Option D uses 1.50 as the constant, which is not the proper value for this formula. Only Option B uses the correct value of 1.08 for the constant, making it the correct formula to use in the temperature rise method for determining airflow.

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CFM=KW / (1.08 x delta T)

CFM = BTU / (1.50 x delta T)

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