From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1073/CH5/EX5.4/5_4.sce | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100755 1073/CH5/EX5.4/5_4.sce (limited to '1073/CH5/EX5.4/5_4.sce') diff --git a/1073/CH5/EX5.4/5_4.sce b/1073/CH5/EX5.4/5_4.sce new file mode 100755 index 000000000..488b312d9 --- /dev/null +++ b/1073/CH5/EX5.4/5_4.sce @@ -0,0 +1,24 @@ +clc; +clear; +//Example 5.4 +mc_dot=1000 //[kg/h] +mc_dot=mc_dot/3600 //[kg/s] +mh_dot=250 //[kg/h] +mh_dot=mh_dot/3600 //[kg/s] +Cpc=4187 //[J/(kg.K)] +Cph=3350 //[W/K] +w=mc_dot*Cpc //[W/K] +l=mh_dot*Cph //[W/K] +C=mh_dot*Cph/(mc_dot*Cpc) +U=1160 //[W/sq m.K] +A=0.25 //Heat transfer surface for exchanger in [sq m] +ntu=U*A/(mh_dot*Cph) // +E=(1-%e^(-ntu*(1+C)))/(1+C) //Effectiveness of heat exchanger +T1=393 //Inlet temperature in [K] +t1=283 //Cooling water [K] +T2=T1-E*(T1-t1) //Outlet T of hot liquid + +t2=C*(T1-T2)+t1 //[K] +printf("\n\nEffectiveness of heat exchanger is %f\n",E); +printf("\nOutlet temperature of hot liquid is %f\n",T2); +printf("\nOutlet temperature of water is %f\n",t2) -- cgit