18.2 Bat Thermoregulation Model Equations
BODY_TEMP(t) ¼ BODY_TEMP(t À dt) + (HEAT_GAIN À HEAT_LOSS) * dt
INIT BODY_TEMP ¼ 10 {Deg C}
INFLOWS:
HEAT_GAIN ¼ QR * EXP(-A * (35 À BODY_TEMP)) {Deg C per Hour}
OUTFLOWS:
HEAT_LOSS ¼ K * (BODY_TEMP-AMBIENT_TEMPERATURE) {Deg C per
Hour}
A ¼ .0693 {Deg C}
AMBIENT_TEMPERATURE ¼ 14 {Deg C}
QR ¼ IF 2 + 2 * (TN - BODY_TEMP) 10 THEN 2 +2 * (TN À BODY_TEMP)
ELSE 10
TN ¼ 35 {Deg C}
K ¼ GRAPH(AMBIENT_TEMPERATURE)
(0.00, 0.4), (5.00, 0.42), (10.0, 0.44), (15.0, 0.46), (20.0, 0.5), (25.0, 0.6), (30.0,
0.7), (35.0, 1.00), (40.0, 1.00), (45.0, 1.00), (50.0, 1.00)
Reference
1. Spain JD (1992) BASIC microcomputer models in biology. Addison-Wesley, Reading
Fig. 18.5
150
18 Bat Thermo-Regulation