The invention relates to a movable ground source
heat pump thermal response test instrument and a testing method. The movable ground source
heat pump thermal response test instrument comprises a vertical U-shaped
pipe buried in a ground source to be detected, a water box, an electric heater, a circulating water pump, a flowmeter,
two temperature sensors, a power adjusting instrument, a PID (
Proportion Integration Differentiation) controller, a
data acquisition instrument and a frequency converter, wherein the vertical U-shaped
pipe is connected with a water inlet and a water outlet of the water box, the electric heater is placed on the bottom of the water box, the
two temperature sensors are respectively arranged in a water inlet
pipe port and a water outlet pipe port of the vertical U-shaped pipe, the flowmeter is arranged in the water inlet pipe port of the water box, and signals of the flowmeter and the
two temperature sensors are sent to the
data acquisition instrument, signals of the temperature sensors in the water inlet pipe port of the vertical U-shaped pipe are sent to the
PID controller, an output
signal of the
PID controller is sent to the power adjusting instrument for controlling the electric heater, and the frequency converter controls the circulating water pump. The test instrument can finish a soil
thermal response test of a ground source
heat pump under two working conditions with constant
heat flux or steady temperature, the real-
time data acquisition and analysis are realized in the test, and the accurate soil thermal response data is obtained.