Add a test with higher temperature combustion product that water flui…

…d properties allow

src/tespy/connections/connection.py

@@ -926,6 +926,7 @@ def calc_results(self):
                         "upper temperature limit of a mixture component. "
                         "The resulting temperature might not be erroneous."
                     )
+                    logger.warning(msg)
         else:
             try:
                 if not self.x.is_set:

tests/test_components/test_combustion.py

@@ -9,7 +9,7 @@
 
 SPDX-License-Identifier: MIT
 """
-
+import pytest
 import shutil
 
 from tespy.components import CombustionChamber
@@ -103,6 +103,20 @@ def test_CombustionChamber(self):
                str(round(self.c3.fluid.val['O2'], 4)) + '.')
         assert 0.0 == round(self.c3.fluid.val['O2'], 4), msg
 
+    def test_CombustionChamberHighTemperature(self):
+        instance = CombustionChamber('combustion chamber')
+        self.setup_CombustionChamber_network(instance)
+
+        # connection parameter specification
+        air = {'N2': 0.8, 'O2': 0.2}
+        fuel = {'CH4': 1}
+        self.c1.set_attr(fluid=air, p=1, T=30, m=1)
+        self.c2.set_attr(fluid=fuel, T=30)
+        instance.set_attr(lamb=1)
+        self.nw.solve('design')
+        self.nw._convergence_check()
+        assert self.c3.T.val_SI == pytest.approx(2110, abs=0.1)
+
     def test_DiabaticCombustionChamber(self):
         """
         Test component properties of diabatic combustion chamber.

tests/test_networks/test_binary_incompressible.py

@@ -51,4 +51,4 @@ def setup_method(self):
         self.nw.solve("design")
 
     def test_binaries(self):
-        self.nw._convergence_check()
+        self.nw._convergence_check()