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ISO 15042 7.5HP Air-Enthalpy Energy Difference Test system

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Sinuo Testing Equipment Co. , Limited

City: guangzhou

Province/State:guangdong

Country/Region:china

Tel:86--13527656435

Contact Person:
Ms.Zoe Zou View Contact Details

ISO 15042 7.5HP Air-Enthalpy Energy Difference Test system

Brand Name	Sinuo
Model Number	SN331-25RT
Certification	Calibration Certificate (Cost Additional)
Place of Origin	China
Minimum Order Quantity	1
Price	Tailored
Payment Terms	T/T
Supply Ability	1 Set Per Month
Delivery Time	2 Months
Packaging Details	Plywood
Applied Standards	ISO 15042, ISO 5151, etc.
UUT Type	7.5HP Air Conditioners
Test Report	Format can be customized
Cooling Capacity	0.75 HP～7.5 HP
Heating Capacity	0.75 HP～7.5 HP
Air Flow	300~4000 m³/h
Static Pressure Precision	≤±（±0.5%RD）+（±0.5%FS）
Nozzle Pressure Precision	≤±（±0.25%RD）+（±0.25%FS）

Detailed Product Description

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
No intense vibration or interference sources
Ambient temperature: 0℃-35℃, relative humidity: <90%
Test control room environment:
- Temperature: 23℃±5℃
- Humidity: <85%RH (including non-operational periods)
- Free from insects, rodents, and corrosive gases

Utility Requirements

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:

≥10 hours at DB=2.0℃, WB=1.0℃
≥8 hours at DB=-7.0℃, WB=-8.0℃

Measurement Uncertainties

RTD temperature precision: ≤±0.1℃
Static pressure difference: ≤±(±0.5%RD)+(±0.5%FS)
Nozzle pressure difference: ≤±(±0.25%RD)+(±0.25%FS)
Inlet & Outlet difference: ≤±(±0.25%RD)+(±0.25%FS)
Electrical inputs: ≤±(±0.25%RD)+(±0.25%FS)
Thermocouple temperature: ≤±0.5℃
Refrigerant pressure: ≤±(±0.25%RD)+(±0.25%FS)
Relative humidity transmitter: ≤±3.0%RH

System Structure

Equipment Installation

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