KTE - 7000GH
GEOTHERMAL HEAT PUMP EXPERIMENTAL EQUIPMENT
Equipment Introduction
The Geothermal Heat Pump Training System (KTE-7000GH) is designed to help users understand the efficiency and operating characteristics of ground heat exchanger systems, which are the core components of geothermal energy systems.
This equipment generates thermal energy through vapor–condensation of refrigerant, utilizing the relatively constant underground temperature maintained throughout the year via a ground circulation circuit.
The system consists of a ground circulation circuit and a refrigerant circuit, and is designed for testing and training on system configuration based on the conventional vapor-compression refrigeration cycle and various basic automatic control methods.
Users can experience cooling and heating mode conversion through operation of a four-way (reversing) valve, enabling practical understanding of heat pump operation.
Equipment characteristics
Enables testing and practice of four-way valve control sequence circuits
Supports forced geothermal heat pump experiments using an artificial ground environment
Provides education on the structure and operating principles of geothermal heat pump systems
Cooling Cycle
Compressor → Reversing Valve (4-way valve) → Geothermal System → Check Valve 2 → Receiver →Filter Dryer → Sight Glass → Solenoid Valve → Manual Expansion Valve 1 →Heat Exchanger 1 → Accumulator → Compressor
Heating Cycle
Compressor → Reversing Valve (4-way valve) → Heat Exchanger 1 → Check Valve 1 → Receiver →Filter Dryer → Sight Glass → Solenoid Valve → Manual Expansion Valve 2 →Geothermal System → Accumulator → Compressor
Supports manual control, temperature control, and humidity control through sequence connection
Enables psychrometric chart plotting using measured temperature and pressure data displayed digitally
Supports real-time data logging to PC, with data saved to Excel files at one-second intervals
Experiment Factor
Refrigeration effect
Compressor work
Condensing effect
Evaporating latent heat
Amount of flash gas at the expansion valve outlet
Dryness fraction and humidity at the expansion valve outlet
Coefficient of Performance (COP)
Measured temperature and pressure data
Data storage at one-minute intervals, up to 1,440 minutes, saved as Excel files after clicking the “SAVE” button
Education Contents
Measurement and analysis of geothermal heat pump systems using software
Performance analysis and fault diagnosis of geothermal heat pump systems
Configuration and operation of self-holding STOP-priority heating and cooling sequence control circuits
Configuration and operation of temperature-based automatic cooling and heating control sequence circuits
Configuration and operation of low-pressure automatic cooling and heating control sequence circuits
Configuration and operation of manual cooling and heating control sequence circuits
Configuration and operation of cooling and heating temperature automatic control sequence circuits
Configuration and operation of combined temperature and pressure automatic control sequence circuits for cooling and heating
System Description
The geothermal section consists of a geothermal environment chamber and a water tank system equipped with a chiller and an electric immersion heater.
It includes vertical and horizontal circulation pipes, a water flow meter, solenoid valves, a circulation pump, and a temperature controller to accurately maintain and control the temperature inside the geothermal chamber.
Machinery Device Section
Control Panel Device Component
Structure of DA100 Program
(1) System schematic with real-time measurement
Schematic diagram of the geothermal heat pump system displaying real-time temperature and pressure values
(2) P–h chart (Pressure–Enthalpy diagram)
Real-time visualization of the refrigeration cycle on the P–h diagram
(3) Measurement data table
Tabulated display of temperature, pressure, and enthalpy data
(4) Performance calculation results
Calculation of Coefficient of Performance (COP)
Calculation of cooling capacity
Calculation of heat transfer capacity in the heat exchanger
Function
Real-time monitoring of inlet and outlet temperature and pressure at the compressor, solenoid valve, heat exchanger, expansion valve, evaporator, and geothermal chamber using dedicated PC software
Real-time monitoring of measured temperature and humidity data
Real-time monitoring of enthalpy values of the refrigeration system
Automatic data logging of all temperature and pressure values at one-minute intervals, saved as Excel files
Experimental function for drawing a P–h chart based on measured temperature and pressure data
Automatic data logging of temperature, pressure, and enthalpy values at one-minute intervals, saved as Excel files
Dedicated sections for:
Display of temperature data
Temperature trend graphs
Display of pressure data
System operation control section with a RUN button to start experiments and data recording
Video Clips for Product Usage
