Relatorio ciclo de refrigeração

Relatório do ciclo de refrigeração – “Sistemas Térmicos T7082” AMATROL – Lucas Andrade Militão

Comandos no EES :
"Ponto 1-Entrada do condensador"

T[1]=58[C]
P[1]=1244 [kPa] x[1]=QUALITY(R134a,v=v[1],P=P[1]) v[1]=VOLUME(R134a,T=T[1],P=P[1]) h[1]=ENTHALPY(R134a,P=P[1],T=T[1]) s[1]=ENTROPY(R134a,T=T[1],P=P[1])

"Ponto 2 - Saída do condensador"

T[2]=42[C]
P[2]=1244[kPa]
v[2]=VOLUME(R134a,T=T[2],P=P[2]) x[2]=QUALITY(R134a,v=v[2],P=P[2]) h[2]=ENTHALPY(R134a,P=P[2],T=T[2]) s[2]=ENTROPY(R134a,T=T[2],P=P[2]) "Ponto 3 - Entrada da válvula de expansão"

T[3]=T[2]
P[3]=P[2]
h[3]=h[2] v[3]=VOLUME(R134a,P=P[3],T=T[3]) x[3]=x[2] s[3]=s[2] "Ponto 4-Saída da válvula de expansão"

T[4]=10[C]
P[4]=404[kPa]
h[4]=h[3] x[4]=QUALITY(R134a,h=h[4],P=P[4]) s[4]=ENTROPY(R134a,x=x[4],P=P[4]) v[4]=VOLUME(R134a,x=x[4],T=T[4]) "Ponto 5-Entrada do evaporador"

T[5]=T[4]
P[5]=P[4]
h[5]=h[4] x[5]=x[4] v[5]=VOLUME(R134a,P=P[5],T=T[5]) s[5]=s[4] "Ponto 6 - Saída do evaporador"

T[6]=10[C]
P[6]=394[kPa]
h[6]=ENTHALPY(R134a,v=v[6],T=T[6]) v[6]=VOLUME(R134a,P=P[6],T=T[6]) x[6]=QUALITY(R134a,v=v[6],P=P[6]) s[6]=ENTROPY(R134a,T=T[6],P=P[6]) "Ponto 7-Entrada do compressor"

T[7]=T[6]
P[7]=P[6]
h[7]=h[6] x[7]=x[6] v[7]=VOLUME(R134a,P=P[7],T=T[7]) s[7]=s[6] "Ponto 8 - Saída do compressor"

T[8]=T[1]
P[8]=P[1]
h[8]=h[1] x[8]=x[1] v[8]=VOLUME(R134a,P=P[8],T=T[8]) s[8]=s[1] "Cálculo das vazões volumétricas"

Q[3]=0.000003540[m³/s] m_dot[3]=Q[3]/v[3] m_dot[8]=m_dot[3] m_dot[7]=m_dot[3] m_dot[6]=m_dot[3] m_dot[5]=m_dot[3] m_dot[4]=m_dot[3] m_dot[2]=m_dot[3] m_dot[1]=m_dot[3]

Q[1]=m_dot[1]*v[1]
Q[2]=m_dot[2]*v[2]
Q[4]=m_dot[4]*v[4]
Q[5]=m_dot[5]*v[5]
Q[6]=m_dot[6]*v[6]
Q[7]=m_dot[7]*v[7]
Q[8]=m_dot[8]*v[8]

"Transferência de calor no evaporador"

Q_dot_evaporador=m_dot[6]*h[6]-m_dot[5]*h[5]

"Transferência de calor no condensador"

Q_dot_condensador=m_dot[2]*h[2]-m_dot[1]*h[1]

"Potencia do