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ISO 15042 7.5HP Air-Enthalpy Energy Difference Test System
System Overview
This 7.5HP air enthalpy method test laboratory consists of indoor and outdoor side rooms designed to test air conditioner performance by measuring temperature, pressure, and electrical parameters. The system is suitable for testing window type, split type, and free-standing air conditioners, supporting both standard operating condition tests and expanded testing requirements for product sampling inspection and development.
System operation is controlled via programmable controller and HMI interface, with high-accuracy data collection and real-time data transfer to upper-level computers for processing, display, storage, and report generation.
Compliance Standards
Designed and tested according to:
ISO 5151:2010
ISO 15042:2017
Operating Principle
The test room adjusts air dry bulb and wet bulb temperatures through balanced temperature and humidity control. The refrigeration system provides continuous cooling and dehumidification, while temperature control meters regulate heater and humidifier output to achieve desired air conditions.
Operational Procedures
Pre-Startup Checklist
Review previous running records
Verify power and water supply status
Ensure unit under test (UUT) is properly installed
Standard Operation
Close power breaker and press "Start" button
Activate fans, heating, humidifying, and static pressure systems via HMI
Engage refrigeration and nozzle systems as required
Set temperature controller SV values according to operating conditions
Energize UUT via frequency variable power supply
Measure UUT parameters once operating conditions stabilize
Shutdown follows reverse sequence of startup procedure
Unit Under Test Specifications
Supported UUT Types
Wall type
Ceiling type
4-way type
Floor stand type
Measurement Ranges
Testing Capacity Range:
Cooling Capacity: 0.75 HP - 7.5 HP
Heating Capacity: 0.75 HP - 7.5 HP
Air Flow: 300-4000 m³/h (7.5HP receiving chamber)
Unit Dimensions:
Panel Type: W≤1000mm, D≤800mm, H≤1800mm
Split Type: W≤1000mm, D≤500mm, H≤2000mm
Electrical Parameters:
Single phase power: 0-5kW
Single phase voltage: 0-300V
Single phase current: 0-20A
Frequency: 50/60Hz
Power factor: 0-1
Power Supply
Type: Three Phase, Four Wire, 45kVA (1 set)
Supply station: 7.5HP One-driven-one type (3-phase power supply)
Environmental Requirements
No strong air flow, direct sunlight, or corrosive gases
Power supply: 3Φ5W 415V±10%, 50Hz, 150kVA (50%-85% operational rate)
Water supply: Clean, scale-free water at 20L/h; DN15 connection
Drainage: DN50 connection
Testing Capabilities
Rated cooling capacity (T1, T2, T3)
Rated heating capacity (High, Low, Extra-low)
Airflow measurement
Dehumidification capacity
Input power analysis
EER/COP calculation
Frequency, current, and voltage measurement
Measurement Accuracy
Measurement Accuracy
Repeatability Accuracy
Compared with standard machine
Average deviation from 3 tests once installed
Cooling capacity: ±2%
Cooling capacity: ±1%
Heating capacity: ±2%
Heating capacity: ±1%
Major Test Conditions
No
Testing Item
Indoor Side (℃)
Outdoor Side (℃)
Dry Bulb
Wet Bulb
Dry Bulb
Wet Bulb
1
Rating Cooling T1
27
19
35
24
Rating Cooling T2
21
15
27
19
Rating Cooling T3
29
19
46
24
2
Maximum Cooling T1
32
23
48
32
Maximum Cooling T2
27
19
35
24
Maximum Cooling T3
32
23
52
31
3
Freeze-up T1
21
15
21
15
Freeze-up T2
21
15
10
8
Freeze-up T3
21
15
21
15
4
Minimum Cooling
21
15
18
12
5
Enclosure Sweat
27
24
27
24
6
Rating Heating High
20
15
7
6
Rating Heating Low
20
15
2
1
Rating Heating Extra Low
10
8
-5
-6
7
Maximum Heating
27
19
24
18
8
Minimum Heating
20
15
-7
-8
9
Automatic Defrost
20
12
2
1
Additional Test Conditions
Indoor Side
Outdoor Side
Temperature (℃)
10-40
-15-60
Relative Humidity (RH)
35%-93%
25%-93%
Control Precision (℃)
±0.2 (WB)
±0.2 (WB)
Testing Precision (℃)
±0.1 (WB)
±0.1 (WB)
Note: Temperature combinations should not significantly deviate from standards. Standard refrigeration/heating conditions maintain ±0.2℃ control precision; other conditions maintain ±0.3℃. Capacity testing available via single side enthalpy method. Performance not guaranteed during defrosting or unit stoppage.
Continuous Operation
Outdoor side room continuous operation capability:
Sinuo is an innovation manufacturing company, specializing in the research and development and sales of laboratory construction and testing equipment for electrical appliances (covering the construction of energy efficiency and performance laboratories, as well as supplementary waterproof testing la... Sinuo is an innovation manufacturing company, specializing in the research and development and sales of laboratory construction and testing equipment for electrical appliances (covering the construction of energy efficiency and performance laboratories, as well as supplementary waterproof testing la...
