Thermostructural Analysis of Plate-Type Heat Exchanger Prototypes Considering Weld Properties

Table 6

Analysis results of 10 kW class PHE prototype.

	Maximum local stress			Yield stress (MPa)			Percentage exceeding the yield stress (%)
	Stress (MPa)	Location	Temperature (°C)	Parent	Weld	HAZ	Parent	Weld	HAZ
Elastic analysis	331.23	Weld	744.46	237.98	260.35		39.18	27.22
Elastic-plastic analysis
Weld
Using parent material properties	263.65	Weld	760.37	236.86			11.31
Using weld material properties	267.60	Weld	742.23	260.50				2.72
HAZ
Using parent material properties	264.56	HAZ				216.04	22.46
Using weld material properties	191.88	HAZ	792.09			216.04			−14.56