Air enters a 30-cm-diameter cooling section at 1 atm, 35 C, and 60 percent relative humidity at...

Question:

Air enters a 30 cm diameter cooling section at 1 atm, 35{eq}^o{/eq}C, and 60 % relative humidity at 120 m/min. The air is cooled by passing it over a cooling coil through which cold water flows. The water experiences a temperature rise of 8{eq}^o{/eq}C. The air leaves the cooling section saturated at 20{eq}^o{/eq}C.

(a) Determine the rate of heat transfer. Round your answer to the nearest tenth. {eq}Q_{out}= \rule{3cm}{0.15mm}kJ/min{/eq}

(b) Determine the mass flow rate of the water. Round your answer to the nearest hundredth {eq}m_{cooling\enspace water} =\rule{3cm}{0.15mm} kg/min{/eq}

(c) Determine the exit velocity of the airstream. Round your answer to the nearest ones place. V{eq}_2 = \rule{3cm}{0.15mm} m/min{/eq}.

Psychrometric Process:

In Psychrometric process we study about the heating and cooling process of air. Sensible cooling, sensible heating, humidification and dehumidification are the different process in Psychrometric.

Answer and Explanation: 1

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Given Data

  • The diameter of coil is: {eq}d = 30\;{\rm{cm}} {/eq}.
  • The initial velocity is: {eq}{V_1} = 120\;{{\rm{m}} {\left/ {\vphantom {{\rm{m}}...

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