Liquid glycerine ?ows around an engine, cooling it as it absorbs energy. The gly

Question

Liquid glycerine ?ows around an engine, cooling it as it absorbs energy. The glycerine enters theen- gine at 60? C and receives 19 kW of heat transfer. What is the required mass ?ow rate if the glycer- ine should come out at a maximum temperature of 95? C?

Liquid glycerine ?ows around an engine, cooling it as it absorbs energy. The glycerine enters theen- gine at 60? C and receives 19 kW of heat transfer. What is the required mass ?ow rate if the glycer- ine should come out at a maximum temperature of 95? C?

Explanation / Answer

heat transfer, Q =19 kW initial temperature, T1= 60C final maximum temperature, T2 = 95C heat transfer is given by Q =mCpT                                    Q = mCp(T2-T1) mass flow rate is m =Q/Cp(T2-T1) take Cp of Liquid glycerine fromtables Cp= 2.42 kJ/kg.K mass flow rate, m =Q/Cp(T2-T1) =19/(2.42*(95-60)) = 0.224 kg/s " i hope this helps you best of luck of rest of your course work"
" i hope this helps you best of luck of rest of your course work"
" i hope this helps you best of luck of rest of your course work"

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