GATE MN · 2022 · MN
Question 59: Mine Ventilation
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Question 59
MNNAT2 marksNeeds review
An underground AC plant requires the delivery of 250 US gpm (15.85 US gpm = 1.0 lps) of chilled water. For this purpose, ice-pellets at 0 °C temperature (latent heat of melting, 334 kJ/kg) are mixed with water at 20 °C (specific heat 4.18 kJ/kg°C) on the surface. The mixture is adiabatically transported to the underground location such that the water at 7°C becomes available for the AC plant. The requirement of ice-pellets in tonne/hr to meet the design condition, is ______. (round off to two decimal places)
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2022MN
GATE MN 2022 · Paper 1
Mining Engineering · Original paper archive
- Section
- Mining Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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