TABLE 1.
Thermophysical Properties of the Tissue Layers and the Pressure Lesion (All data is from [13] unless indicated otherwise in the table)
| Specific heat (J/kg.K) |
Density (kg/m3) |
Thermal conductivity (W/m.K) |
Perfusion rate (10–3) (1/s) |
Metabolic heat rate (W/m3) |
Arterial blood temperature (°C) |
Blood density (kg/m3) |
Blood specific heat (J/kg.K) |
|
|---|---|---|---|---|---|---|---|---|
| Epidermis | 3589 | 1200 | 0.235 | 0 | 0 | - | 1060 | - |
| Papillary dermis | 3300 | 1200 | 0.445 | 0.18 | 368.1 | 37 | 1060 | 3700 |
| Reticular dermis | 3300 | 1200 | 0.445 | 1.26 | 368.1 | 37 | 1060 | 3700 |
| Fat | 2674 | 1000 | 0.185 | 0.08 | 368.3 | 37 | 1060 | 3700 |
| Muscle | 3600[16] | 1085 | 0.51 | 2.7 | 684.2 | 37 | 1060 | 3700 |
| Bone | 1300[26] | 2000[25] | 0.4[25],[26] | 0[27] | 0[27] | - | - | - |
| Lesion (Ischemia) | 2450[16],[13] | 1037[16] | 0.1[16] | 0.262[19–21] | 342.1 | 35[16] | 1060 | 3700 |
| Lesion(Inflammation) | 2450 | 1037 | 0.558 | 6.95 | 5262.5 | 37 | 1060 | 3700 |