From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:27:19 +0530 Subject: initial commit / add all books --- 3878/CH25/EX25.3/Ex25_3.sce | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 3878/CH25/EX25.3/Ex25_3.sce (limited to '3878/CH25/EX25.3/Ex25_3.sce') diff --git a/3878/CH25/EX25.3/Ex25_3.sce b/3878/CH25/EX25.3/Ex25_3.sce new file mode 100644 index 000000000..02247dcae --- /dev/null +++ b/3878/CH25/EX25.3/Ex25_3.sce @@ -0,0 +1,16 @@ +clear +// +// Variable declaration +// From example 25.2 +Q=16.4// Total load in kW +T_in=33// The temperature at liquid R134a enters the expansion valve in °C +T_out=9// The temperature at liquid R134a leaves the cooler in °C +T_e=5// The temperature at which liquid R134a evaporates in °C + +// Calculation +h_v=405.23// Enthalpy of R134a,superheated to 9 C in kJ/kg +h_f=246.71// Enthalpy of liquid R134a at 33 C in kJ/kg +Re=h_v-h_f// Refrigerating effect in kJ/kg +m_r=Q/Re// Required refrigerant mass flow in kg/s +printf("\n Required refrigerant mass flow=%0.3f kg/s",m_r) + -- cgit