The document discusses a steady state differential analysis of a heat pump system, including various parameters such as temperature, PID controller settings, and supply/return specifications. It outlines the testing process with specific temperature set points and timestamps for monitoring performance. Key metrics like the differential band and settling time are also mentioned for evaluating system stability.

1. Steady State Differential Band
-40
-20
0
20
40
60
80
100
120
385 390 395 400 405 410 415 420
d/dt(GBDeltaT) GB Supply GB Return
deltaT differential band

2. PID Settling Time
0
10
20
30
40
50
60
70
12:36:00 12:38:53 12:41:46 12:44:38 12:47:31 12:50:24 12:53:17 12:56:10 12:59:02
Temperature℃
Time
Heat Pump PID Set Point Test
Ambient Air
HP Return
HP Supply
KP = 10
PID Start: KP = 5
Set_Point: tempPrimaryLoopReturn = 35°C
(return +5°C from solar)