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-rw-r--r--3878/CH30/EX30.1/Ex30_1.sce27
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+clear
+// Variable declaration
+P=15// kW
+n_b=85// The effiency of the gas boiler in %
+SCOP=3// An average or seasonal COP (SCOP) of heat pump
+
+// Calcualtion
+// For the gas boiler
+R_pf=17.65// Rate of primary fuel use in kW
+m_co2=0.19// The mass of carbon in kg
+R_co2=R_pf*m_co2// Rate of CO_2 emission in kg/h
+// For example
+Gp=3// p/kWh
+Rc=R_pf*Gp// Boiler Running cost in p per hour of heating
+printf("\n Boiler Running cost=%2.0fp per hour of heating.",Rc)
+
+// For heat pump
+T_R_pf=10// Rate of primary fuel use in kW (total)
+R_pf=5// Rate of primary fuel use in kW
+m_co2=0.43// The mass of carbon in kg
+R_co2=R_pf*m_co2,// Rate of CO_2 emission in kg/h
+
+// For example
+Ep=9// p/kWh
+Rc=R_pf*Ep// HP Running cost in p per hour of heating
+printf("\n HP Running cost=%2.0fp per hour of heating.",Rc)
+