4-WAY VALVE HEAT PUMP HEATING & COOLING EQUIPMENT

KTE-3000HD

Equipment Introduction

Refrigerant flow direction switch operation experiment by 4-way valve
4-way valve control heat pump cooling & heating operation characteristic experiment
DAQ program supply tools with that temperature, pressure, enthalpy, amount of the exchanged heat in each position can be measured in real time, and then saved by Microsoft Excel, so that saved data can be show and analysis by graph

Equipment Characteristics

Cooling cycle : Compressor → 4 way valve → Heat exchanger 2 → Check valve 2 → Receiver → Filter Dryer → Sight Glass → Solenoid valve → Manual expansion valve → Heat exchanger 1 → Liquid separator → Compressor
Heating cycle : Compressor → 4 way valve → Heat exchanger 1 → Check valve 1 → Receiver → Filter Dryer → Sight Glass → Solenoid valve → Manual expansion valve → Heat exchanger 2 → Liquid separator → Compressor
Being practicable to operate on manual, thermal control or pump down with connecting by sequence control system
Function for specification of refrigerator performance automatic measuring & data acquisition and system monitoring program
Being practicable to measure temperature at each of compressor inlet and outlet, condenser inlet and outlet, expansion valve inlet and outlet, evaporator outlet, inside chamber and outside air using thermocouples of K-type
Measure of pressure : Being practicable to measure within the range of –1 ~ 35 bar at each of compressor inlet and outlet, condenser outlet, expansion valve inlet by pressure sensors which are installed
Experiment factors

- Refrigeration effect

- Compressor work

- Condensing effect

- Evaporating latent heat

- Amount of flash gas at expansion valve outlet

- Dry ratio and humidity at expansion valve outlet

- Coefficient of Performance

- Temperature and Pressure data which are measured

- Being saved on every minute until 1,440 min as excel file after click the “SAVE”

Education Contents

Heat pump System Measurement and Analysis Using Software
Cooling performance measurement and analysis of a Heat pump system
Heating performance measurement and analysis of a Heat pump system
Configuration sequence circuit reversing refrigerant flow direction for Heat pump system and operation
Configuration manual control sequence circuit for Heat pump system and operation
Configuration manual control PLC programming for Heat pump system and operation
Configuration automatic control sequence circuit for Heat pump system and operation
Configuration automatic control PLC programming for Heat pump system and operation

Product Composition

Mechanical Refrigeration Device Component

Control Panel Devace Component

4 Way Valve Principle

Cooling operation :

The valve is not powered during cooling operation, a compressed high-pressure refrigerant is connected to the heat exchanger

Heating operation :

Power the valve during heating operation. When power is applied to the valve, the cap inside the body moves in the direction of A, and changes the direction of refrigerant flow.
The compressed high-pressure refrigerant is connected to the heat exchanger on the first side to deliver high temperature.