ETENWOLF HB2 Hair Dryer Airflow Pressure Endurance Test Report

Document Overview

Key Findings The ETENWOLF HB2 hair dryer completed multi-stage airflow pressure (wind pressure) endurance testing across three sample units (4#, 5#, 6#), measuring outlet static pressure in psi at cumulative operating hours from 15 H through 25 H. Sample 5# was retired mid-test, while samples…

Document type

Test Report

Prepared by

Alex Newman

Published

July 22, 2026

Last reviewed

July 22, 2026

Topics

Mechanical Reliability

Key Findings

The ETENWOLF HB2 hair dryer completed multi-stage airflow pressure (wind pressure) endurance testing across three sample units (4#, 5#, 6#), measuring outlet static pressure in psi at cumulative operating hours from 15 H through 25 H. Sample 5# was retired mid-test, while samples 4# and 6# maintained stable pressure readings through the full test duration.

• Product: HB2 Hair Dryer (吹风机)
• Test Type: Mechanical Reliability — Airflow Pressure Endurance
• Samples Tested: 3 units (4#, 5#, 6#)
• Test Duration Range: 15 H – 25 H cumulative operating hours
• Pressure Range Observed: 0.66 psi – 0.81 psi
• Sample 5# Status: Discontinued after 15 H measurement (recorded as /)
• Samples 4# and 6# Result: Continued operation through 25 H with consistent pressure output

Test Overview

Test Equipment & Setup

Test Procedure

1. Pre-Test: Label samples as 4#, 5#, and 6#. Record baseline condition of each unit before powered operation begins.
2. Operation: Run each sample unit continuously or in cycles to accumulate operating hours. Log the cumulative operating hours at each measurement checkpoint.
3. Pressure Measurement at 15 H: Measure airflow outlet static pressure (psi) for all three samples (4#, 5#, 6#) at 15 cumulative operating hours.
4. Pressure Measurement at 18 H: Measure pressure for active samples. Record / for any sample no longer in test.
5. Pressure Measurement at 22 H: Measure pressure for active samples. Record / for any sample no longer in test.
6. Pressure Measurement at 25 H: Final measurement checkpoint — record pressure for all remaining active samples.
7. Post-Test Inspection: Inspect each sample for physical damage, motor noise changes, or performance degradation after endurance run.
8. Acceptance Criteria: Samples must maintain measurable airflow pressure output through the designated endurance duration without structural failure or unsafe condition.

Test Data & Results

The table below presents the complete raw airflow pressure dataset as recorded in source sheet 风压数据. All rows and columns are reproduced without omission.

Observations:

• Sample 4# pressure ranged from 0.66 psi (at 18 H) to 0.76 psi (at 15 H), showing minor fluctuation but remaining operational through 25 H.
• Sample 5# was only measured at the 15 H checkpoint (0.72 psi) and was not measured at subsequent checkpoints, indicated by /. No remarks were recorded explaining the discontinuation.
• Sample 6# showed the highest initial pressure (0.81 psi at 15 H) and remained active through 25 H with a final reading of 0.76 psi.
• No remarks were recorded for any data row, indicating no anomalies were flagged during the test period.

Conclusion

Document Information

Frequently Asked Questions

What does the wind pressure (风压) measurement indicate in the HB2 endurance test?

Wind pressure (风压) measures the static outlet air pressure of the HB2 hair dryer in psi. During the endurance test, it is recorded at each cumulative operating hour checkpoint to verify that the motor and airflow system continue to perform consistently as the unit ages under sustained use.

Why does Sample 5# show a slash (/) for most of the test checkpoints?

A slash (/) in the data table indicates that the sample was not measured at that checkpoint. Sample 5# was recorded only at the 15 H mark with a reading of 0.72 psi. No remarks were entered in the source data to explain the discontinuation, which may indicate the sample was removed from the test or failed between checkpoints.

How do samples 4# and 6# compare over the full 25-hour endurance run?

Both samples 4# and 6# completed all four measurement checkpoints (15 H, 18 H, 22 H, 25 H). Sample 6# started slightly higher at 0.81 psi and finished at 0.76 psi. Sample 4# ranged between 0.66 psi and 0.76 psi. Both units showed only minor fluctuation with no recorded anomalies, indicating stable mechanical performance through 25 cumulative operating hours.

What test standard or acceptance threshold was applied to the HB2 airflow pressure test?

The source report does not specify a named external standard or a defined minimum pressure threshold for this particular endurance test. The data captures observed performance across the test duration. For precise acceptance criteria and applicable standards, refer to ETENWOLF’s internal product qualification documentation for the HB2 model.

Related Products

This report covers the 风压数据 (Airflow Pressure Data) sheet from the HB2 endurance test workbook. The same Excel file contains an additional sheet with related test data:

• ETENWOLF HB2 Hair Dryer — Product Overview
• HB2 Endurance Test — Main Sheet (HB2) — Sibling sheet from the same source file covering additional lifecycle and reliability data for the HB2 model