Gce Model Questions Vol1 2025 Agricultural Science Question 40
Practice objective / multiple choice question 40 from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
A cold store for tomatoes has a volume of 200 m³. The desired storage temperature is 12 °C while the ambient air is 30 °C with a relative humidity of 70 %. The wet‑bulb temperature of the ambient air is 24 °C. Air is cooled by an evaporative cooler whose efficiency is 0.6, meaning the temperature drop of the air equals 0.6 × (ambient dry‑bulb - wet‑bulb). The produce generates 5 kW of heat that must be removed by the cooled air. Given the specific heat capacity of air \(c_p = 1.005\) kJ kg⁻¹ K⁻¹ and air density \(\rho = 1.2\) kg m⁻³, calculate the required mass flow rate of air (in kg s⁻¹) and the corresponding volumetric flow rate (in m³ s⁻¹) to maintain the desired temperature.
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This is Gce Model Questions Vol1 2025 Agricultural Science Question 40. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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