def test_raised_exception_method_selection_02():
"""Test if an exception is raised if unknown method name is passed."""
with pytest.raises(ValueError):
ac.calc_heat_flux(ddts=25,
coef_s=0.42,
coef_r=0.9,
method='shaken_not_stirred')
def test_calc_heat_flux_generator():
"""Test calculation of driving heat for chiller 'Broad_02'."""
Q_dots_gen = ac.calc_heat_flux(ddts=[110],
coef_s=10.807,
coef_r=-603.85,
method='kuehn_and_ziegler')
assert Q_dots_gen == [584.92]
def test_calc_heat_flux_evaporator():
"""Test calculation of cooling capacity for chiller 'Broad_01'."""
Q_dots_evap = ac.calc_heat_flux(ddts=[50],
coef_s=24.121,
coef_r=-553.194,
method='kuehn_and_ziegler')
assert Q_dots_evap == [652.856]
'data/characteristic_parameters.csv')
charpara = pd.read_csv(filename)
chiller_name = 'Kuehn'
t_cooling = [23, 25, 27, 29, 31, 33, 35, 36, 37, 38, 39, 40]
ddt_75 = abs_hp_chiller.calc_characteristic_temp(
t_hot=[75],
t_cool=t_cooling,
t_chill=[15],
coef_a=charpara[(charpara['name'] == chiller_name)]['a'].values[0],
coef_e=charpara[(charpara['name'] == chiller_name)]['e'].values[0],
method='kuehn_and_ziegler')
Q_dots_evap_75 = abs_hp_chiller.calc_heat_flux(
ddts=ddt_75,
coef_s=charpara[(charpara['name'] == chiller_name)]['s_E'].values[0],
coef_r=charpara[(charpara['name'] == chiller_name)]['r_E'].values[0],
method='kuehn_and_ziegler')
Q_dots_gen_75 = abs_hp_chiller.calc_heat_flux(
ddts=ddt_75,
coef_s=charpara[(charpara['name'] == chiller_name)]['s_G'].values[0],
coef_r=charpara[(charpara['name'] == chiller_name)]['r_G'].values[0],
method='kuehn_and_ziegler')
COPs_75 = [Qevap / Qgen for Qgen, Qevap in zip(Q_dots_gen_75, Q_dots_evap_75)]
ddt_80 = abs_hp_chiller.calc_characteristic_temp(
t_hot=[80],
t_cool=t_cooling,
t_chill=[15],
coef_a=charpara[(charpara['name'] == chiller_name)]['a'].values[0],
coef_e=charpara[(charpara['name'] == chiller_name)]['e'].values[0],