Am 24.12.2013 13:01, schrieb Tim Franke:
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Siehe hierzu auch Grundlagen:
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Beispiel 3.3.4 (Seite 14 von 38)
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(m_K * x_K + m_U * x_U) / (m_K + m_U) - x_1 = 0 cp_L * t_R + x_R * (cp_W * t_R + r_0) - h_R = 0 cp_L * t_U + x_U * (cp_W * t_U + r_0) - h_U = 0 (m_K * h_R + m_U * h_U) / (m_K + m_U) - h_1 = 0 cp_L * t_1+x_1 * (cp_W * t_1 + r_0) - h_1 = 0 AA - BB / (t_1 + CC) - LN(p_1S) = 0 0,6222 * p_1S / (p * 1000 - p_1S) - x_1S = 0 x_2S * p / (0,6222 + x_2S) - p_2S / 1000 = 0 AA - BB / (t_2 + CC) - LN(p_2S) = 0 x_2S - x_3 = 0 m_R * (x_1 - x_3) - m_W = 0 m_1 * (h_2 - h_1) - Q_12 = 0 cp_L * t_2 + x_3 * (cp_W * t_2 + r_0) + (x_2 - x_3) * c_W * t_2 - h_2 = 0 m_U + m_K - m_1 = 0 x_2 - x_1 = 0 cp_L * t_3 + x_3 * (cp_W * t_3 + r_0) - h_3 = 0 t_3 - t_2 = 0 x_5 - x_3 = 0 cp_L * t_5 + x_5 * (cp_W * t_5 + r_0) - h_5 = 0 m_1 * (h_5 - h_3) - Q_35 = 0 Q_35/3600 - Q_35erf = 0 AA - BB / (t_R + CC) - LN(p_RS) = 0 0,6222 * phi_R * p_RS / 1000 / (p - phi_R * p_RS / 1000) - x_R = 0 Q_12/3600 - Q_12erf = 0 x_K - x_R = 0 AA - BB / (t_T + CC) - LN(p_TS) = 0 0,6222 * 1 * p_TS / 1000 / (p - 1 * p_TS / 1000) - x_R = 0 m_R - m_K - m_U = 0 AA - BB / (t_U + CC) - LN(p_US) = 0 0,6222 * phi_U * p_US / 1000 / (p - phi_U * p_US / 1000) - x_U = 0 p * 100000/1000 * (1 + x_U) / (((273,15 + t_U) * R_L) * (1 + x_U /
0,6222)) - rho_UftL = 0 ? x_1S x_3
Value(s), Constants(s), Function(s)
m_R = 70 kg/h
x_R = 0,0055 -
m_U = 80 kg/h
x_U = 0,0075 -
x_3 = 0,0051 -
AA = 19,016 - BB = 4064,95 - CC = 236,25 -
R_L = 0,287 kJ/kgK
cp_L = 1,01 kJ/kgK cp_W = 1,86 kJ/kgK c_W = 4,19 kJ/kgK
r_0 = 2501 kJ/kg
p = 1 bar
Solution(s)
x_1 = 0,007785714 - h_R = 36,20056 kJ/kg h_U = 28,997 kJ/kg h_1 = 27,96792 kJ/kg
p_1S = 10,9501085 mbar x_1S = 0,006888588 - p_2S = 8,130081301 mbar
x_2S = 0,0051 - m_W = 0,188 kg/h phi_R = 0,331147589 - h_2 = 16,86690357 kJ/kg m_1 = 70 kg/h x_2 = 0,007785714 - h_3 = 16,82201277 kJ/kg
x_5 = 0,0051 - h_5 = 33,14482 kJ/kg Q_35 = 1142,596506 kJ/h Q_35erf = 0,317387918 kW p_RS = 26,45994657 mbar Q_12 = -777,0711498 kJ/h Q_12erf = -0,215853097 kW x_K = 0,0055 - p_TS = 8,762147523 mbar
m_K = -10 kg/h p_US = 12,28757799 mbar phi_U = 0,969306852 - rho_UftL = 1,225019228 kg/m3
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JCH