Subtopic: Psychrometry – properties of air-water vapour mixture
Question Statement:
Heated air at 50 °C and 10% relative humidity is used to dry rice in a bin dryer. The air leaves the bin under saturated condition. The corresponding data for humidity ratio as read from the psychrometric chart are 0.0078 and 0.019 kg water per kg dry air. The amount of water removed per kg of dry air will be
Options:
(A) 0.0112 kg
(B) 0.021 kg
(C) 0.112 kg
(D) 0.121kg
Official Answer Key:
A
Step-by-Step Solution & Explanation
Water removed per kg dry air = (exit humidity ratio) − (inlet humidity ratio) = 0.019 − 0.0078 = 0.0112 kg water/kg dry air.
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.