This laboratory utilizes insulated chamber panels and an accompanying air reprocessing unit to provide a stable temperature and humidity environment for washing machine performance testing. Utilizing a constant temperature water system and related measurement and control systems, the units under test can operate continuously at a temperature of 23±2°C and a humidity control of 65%±5%. This facility provides the necessary conditions for testing washing machine energy consumption and other performance tests.

This project, a washing machine performance laboratory, primarily includes three test stations for washing machines and one test station for a reference machine. The goal is to establish a state-of-the-art laboratory capable of washing machine testing, improving product qualification rates and market competitiveness.

The laboratory covers an area of approximately 51㎡. It consists of a test room and an equipment room, capable of conducting washing machine performance tests. This laboratory can conduct tests at three stations simultaneously. The laboratory construction mainly includes the following parts:

• Test chamber room
• Refrigeration and chiller units
• Environmental control system
• Constant temperature and pressure water supply system and piping system
• Control system
• Water hardness control system
• Measurement system (test stations can measure inlet water temperature, pressure, water hardness, and electrical parameters)
• Power supply system and secondary power distribution engineering
• Design, installation, and commissioning

• Power consumption
• Water consumption
• Washing ratio
• Washing wear rate
• Dehydration performance
• Rinsing performance

• Test room: 100mm thick polyurethane insulation layer, 0.6mm thick double-sided color-coated steel panels
• Flame-retardant polyurethane panels with a foam density of no less than 38kg/m³ and a flame retardant rating of B1
• Test room dimensions: L6000mm x W3000mm x H3200mm; specific dimensions can be adjusted based on actual conditions
• Testing stations: 4 stations, stainless steel workstations
• Test room door: W1200mm x H2200mm, no threshold, with an observation window
• Lighting: Four double-tube, fog-proof and waterproof fluorescent lamps (with protective covers) are installed
• A single-phase AC backup power outlet is installed on the wall (at the door)
• The test room has a sign indicating the test operation
• Ceiling: 600x600mm perforated aluminum panels are used to ensure uniform air distribution
• The test room floor is made of concrete, waterproof, paved with anti-slip tiles, and has drainage grooves

• Air Handling Unit: Stainless steel housing (1 unit)
• Air Supply: Centrifugal blowers (2 units)
• Water-cooled chiller: 1 unit
• Heating Device: Stainless steel electric heater, three-phase power regulator, easy to disassemble and maintain
• Humidification Control: Stainless steel electric humidification tube, three-phase power regulator, all-stainless steel water tank with removable and washable cover for easy scale removal (1 unit)
• Protective Devices: 1 set for air pressure, overtemperature, water shutoff, high and low pressure, and overcurrent

• Two sets of the three-phase variable-frequency regulated power supplies: 15kVA, adjustable voltage 0-400V, 0.1V resolution, 50/60Hz frequency
• Power supply for washing machines and reference machines
• All power supply voltages are programmable

Each workstation has a three-way water supply system. Two of them are constant temperature and constant pressure water supply systems, including cold water tanks and hot water tanks. The water temperature and pressure are adjustable, and the water hardness is manually controllable. One is tapping water supply; all water pumps are southern stainless-steel pumps.