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MHT6109-2014 English PDF

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MHT6109-2014: Airplane pre-conditioning air unit

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
MH/T 6109-2014	909	Add to Cart	6 days	Airplane pre-conditioning air unit

Similar standards

GB/T 23420 MH/T 7022 MH/T 6115 MH/T 6110

Basic data

Standard ID: MH/T 6109-2014 (MH/T6109-2014)
Description (Translated English): Airplane pre-conditioning air unit
Sector / Industry: Civil Aviation Industry Standard (Recommended)
Classification of Chinese Standard: V56
Word Count Estimation: 26,291
Date of Issue: 22/10/2014
Date of Implementation: 1/12/2014
Issuing agency(ies): Civil Aviation Administration of China

MHT6109-2014: Airplane pre-conditioning air unit

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Airplane pre-conditioning air unit ICS 49.100 V 56 Civil Aviation Industry Standard of the People's Republic of China Aircraft ground air conditioning unit 2014-10-22 released 2014-12-01 implementation Issued by Civil Aviation Administration of China

Foreword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Classification and marking...2 5 Technical requirements...3 6 Test conditions and methods...5 7 Inspection rules...9 8 Marks, random documents, packaging, transportation and storage...10 Appendix A (Normative Appendix) Test methods for air volume, wind pressure, power, external static pressure (laboratory test method)...12 Appendix B (Normative Appendix) Test methods for air volume, wind pressure, power, and external static pressure (field test method)...18 Appendix C (Normative Appendix) Test Methods for Cooling Capacity and Heating Capacity (Laboratory Test Method)...20 Appendix D (Normative Appendix) Test methods for cooling capacity and heating capacity (field test method)...23

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". This standard was proposed by the Airport Department of the Civil Aviation Administration of China. This standard was approved by the Aircraft Airworthiness Certification Department of the Civil Aviation Administration of China. This standard is under the jurisdiction of the China Academy of Civil Aviation Science and Technology. Drafting organizations of this standard. National Air Conditioning Equipment Quality Supervision and Inspection Center, Guangdong Shenling Air Conditioning Equipment Co., Ltd., Sichuan Huashengqiang Aviation Ground Equipment Co., Ltd., Guangdong Jirong Air Conditioning Co., Ltd. The main drafters of this standard. Cao Yang, Pan Zhanhua, Lin Meina, Sun Zhiqiang. Aircraft ground air conditioning unit

1 Scope

This standard specifies the classification and marking, technical requirements, test methods, inspection rules and markings, packaging, and transportation of aircraft ground air-conditioning units. Transportation, storage, etc. This standard is applicable to aircraft ground air-conditioning units that are powered by electricity, use direct expansion evaporative cooling cycle technology, and have their own fans (below Refer to the manufacturing, testing and calibration of the unit), the aerodynamic performance and thermal performance testing and calibration of the fuel-driven unit.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 1236-2000 Industrial ventilators use standardized air ducts for performance tests GB/T 2423.17 Salt spray test standard GB/T 2624.3 Use a differential pressure device installed in a circular cross-section pipe to measure the flow of fluid in a full pipe. Part 3.Nozzles and Venturi nozzles GB 9068 Measurement of noise sound power level of heating, ventilation and air conditioning equipment-Engineering method GB/T 13384 General technical conditions for packaging of mechanical and electrical products The composition, content and presentation method of GB/T 19678 specification (IEC 62079.2001, IDT) GB 25130 Safety requirements for unitary air conditioners JG/T 21-1999 Air cooler and air heater performance test method MH/T 6014 Aircraft water truck MH/T 6028 Passenger boarding bridge AHM 910 Basic Requirements for Aircraft Ground Support Equipment AHM 913 Basic Safety Requirements for Aircraft Ground Support Equipment Equipment) AHM 915 Standard Controls AHM 973 Functional Specification for a Towed Aircraft Ground Heater AHM 974 Functional Specification for Aircraft Air Conditioning (Refrigeration) Equipment (Cooling) Unit)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Aircraft pre-conditioning air unit A special air-conditioning unit for airport ground services that regulates the air in the aircraft cabin, also known as a pretreatment air-conditioning unit, which uses direct Connected with evaporative compression condensing refrigeration technology to filter, cool, dehumidify or heat the inhaled air, and follow the air specified by the aircraft model The flow and pressure deliver treated air to the aircraft's internal space on the ground. Note. The unit includes a refrigeration system and a ventilation system. Purification, humidification, and heating systems can be configured as required. 3.2 Standard air The state of the air at a temperature of 20 ℃, a relative humidity of 65% RH, and an atmospheric pressure of 101.3 kPa. 3.3 Rated supply air flow rate Under specified working conditions, the amount of air sent from the air outlet of the unit per unit time. 3.4 Rated static pressure of supply air Under specified working conditions, the unit overcomes internal resistance and the static pressure at the air outlet of the unit. 3.5 Rated cooling capacity Under specified working conditions, the unit reduces the outdoor air temperature of rated air volume and air pressure to below 2 ℃, and the relative humidity is not more than 95%. Cooling capacity. 3.6 Nominal value The performance value declared by the unit on the nameplate or technical file.

4 Classification and marking

4.1 Classification 4.1.1 According to the use of climate environment classification, see Table 1. 4.1.2 Classified according to specifications and models, see Table 2. 4.1.3 According to the power source of unit compressor. --DL (electric drive) type; --RY (fuel driven) type. 4.1.4 According to the installation method of the unit, it is divided into. --DG (hanging) type; --LD (landing) type; --YD (mobile) type; --CZ (vehicle) type. 4.1.5 According to the basic functions of the unit. --L (single refrigeration) type; --LR (hot and cold) type. 4.2 Marking Example. GPCA-E2-DL-DG-LR-T1 indicates the E2, electric drive, hanging, cooling and heating function, T1 type ground air conditioning unit.

5 Technical requirements

5.1 General requirements 5.1.1 The unit should meet the requirements of AHM 910, AHM 913, AHM 973, AHM 974 and GB 25130. 5.1.2 Various safety signs and nameplates on the outer surface of the unit should be firmly set in obvious positions, and metal signs and signs should be anchored. Each unit There should be at least 2 reflective signs on the side with a maximum spacing of 1.5 m, and each reflective sign should not be less than 100 cm2. 5.1.3 The acute angle of the shell of the unit should be wrapped with anti-collision material. 5.1.4 The inside of the unit should be tidy and clean, free of debris, and easy to clean and maintain. 5.1.5 The casing and fasteners of the unit should be treated with rust prevention. 5.1.6 Electrical components, meters, switches, etc. should be arranged neatly and connected reliably. The display of control signals and alarm signals should be arranged in groups, Meet the requirements of AHM 915 standard graphics. The bridge-mounted air conditioning unit shall be equipped with a remote operation control box. 5.1.7 When the unit is installed in a hanging type, the safe and effective carrying capacity of the suspension bracket should be greater than the operating quality of the unit, and can carry the boarding All the forces on the bridge during movement. 5.1.8 The air inlet of the evaporator of the unit should be equipped with a removable cleaning, anti-corrosion decomposition, anti-aging air filter. 5.1.9 The water collector or drain tank of the unit should be able to be drawn out for cleaning. 5.1.10 The unit should have measures to cut off the supply air and residual pressure control. For units using exhaust valve devices, the outlet of the exhaust valve should be set The location of the injured worker. 5.1.11 The rotating part of the air-conditioning fan should have protective measures to absorb shock and vibration when the power source is suddenly stopped. 5.1.12 The unit hoisted on the boarding gallery shall meet the anti-vibration requirements in MH/T 6028 during operation. 5.1.13 For the unit with heating function, the air outlet of the heating system shall be able to deliver under the rated air supply volume, outlet static pressure and nominal working conditions Hot air at 20 ℃～26 ℃. 5.2 Unit electrical system 5.2.1 The electrical system of the unit should ensure the unit to start smoothly and work reliably. 5.2.2 The electrical system of the unit shall have the functions of protection against overload, over temperature and over pressure of the whole unit. 5.2.3 The electrical system of the unit shall have the function of automatically detecting the main faults of the unit and alarming. 5.2.4 Electrically driven units should have voltage overvoltage and undervoltage shutdown protection functions. 5.2.5 The motor used by the electric drive unit should be equipped with a circuit breaker, and should have protection functions such as overload, phase sequence, and phase imbalance. 5.2.6 The operation panel should have the work instructions of each component, the main operating data display, the cumulative operating time display and the fault alarm display. 5.2.7 The electrical equipment and electronic control devices of the unit should be able to effectively protect against wind, rain and salt spray erosion. 5.2.8 The unit should have a manual emergency shutdown function. 5.2.9 The electrical equipment and electronic control devices of the unit should have anti-electromagnetic interference and surge protection functions. 5.2.10 The unit should be equipped with operating lighting and indicator lights. 5.2.11 The crew shall have information interfaces and corresponding software with the boarding bridge or boarding bridge monitoring and management system to ensure the boarding bridge and boarding bridge monitoring The system can obtain unit operating status (including temperature, pressure, wind speed, etc.), interlock status with boarding bridge, fault alarm and operating time And other information. 5.3 Performance requirements 5.3.1 Start operation The unit should be able to start normally and run continuously for 8 h under the following environmental conditions. --Ambient temperature. -20 ℃～43 ℃; --Relative humidity. 10%RH～100%RH; --Wind speed. ≤14 m/s. 5.3.2 Tightness of the refrigeration system When testing according to method 6.2.2, there should be no refrigerant leakage in various parts of the refrigeration system. 5.3.3 Air supply volume, external static pressure, power According to the test method in 6.2.3, under the air supply rate specified in Table 2, the static pressure outside the machine should be maintained at the value specified in Table 2 (the maximum allowable error is ±2%) The rate should not be greater than 110% of the rated value. 5.3.4 Cooling capacity According to the test method in 6.2.4, the cooling capacity should not be less than 95% of the value specified in Table 2. 5.3.5 Cooling power consumption According to 6.2.6 method test, the cooling power consumption should not be greater than 110% of the nominal value of the unit. 5.3.6 Heating capacity According to 6.2.6 method test, the heating capacity should not be less than 95% of the nominal value of the unit. 5.3.7 Heating power consumption According to the test method 6.2.7, the heating power consumption should not exceed 110% of the nominal value of the unit. 5.3.8 Maximum cooling operation According to the test method 6.2.8, the functional components of the unit should not be damaged, the safety protection device should not be tripped, and the unit should be able to operate normally. 5.3.9 Minimum cooling operation According to 6.2.9 method test, the unit should be able to operate normally, and the air volume should not be less than 75% of the rated air volume. 5.3.10 Condensate removal capacity According to the test in 6.2.10, the condensed water drains smoothly, and there should be no condensed water overflowing or blowing out of the place outside the drain. 5.3.11 Test with water When testing according to method 6.2.11, the air supply system should ensure that the air entering the aircraft cabin is dry and free of free water. 5.3.12 Continuous operation performance When tested according to method 6.2.12, the unit runs continuously for 8 hours, the power distribution and control equipment of the unit are not overheated, and the outlet air temperature should be kept at 1 ℃~ Within 5 ℃. 5.3.13 Ventilation adjustment performance When testing according to method 6.2.13, when only ventilation is required, the compressor should be able to stop working, and the air volume should be free within the range of 25% to 100% adjust. 5.3.14 Noise When testing according to method 6.2.14, the A-weighted noise sound pressure level should not be large at a horizontal distance of 4.6 m and a vertical height of 1.5 m from the unit At 85 dB(A). 5.3.15 Safety requirements Test according to the method specified in GB 25130, and items other than the water spray insulation resistance should meet the requirements of GB 25130. According to the method of 6.2.15.2, the insulation resistance should not be less than 1 MΩ. 5.3.16 Driving and braking performance The driving and braking performance of the vehicle-mounted unit should meet the relevant requirements in MH/T 6014.

6 Test conditions and methods

6.1 Test conditions 6.1.1 The unit should be tested according to the voltage and frequency on the nameplate and the working conditions specified in Table 3.During the test, all auxiliary components (including the Air filter device and air outlet pipeline and accessories), keep the number of air passages unchanged. The maximum allowable error of readings during the test should meet the requirements of Table 4. 6.1.2 During the test, various measuring instruments should be within the validity period of metrological verification, and their accuracy should meet the requirements of Table 5. 6.2 Test method 6.2.1 Startup 6.2.1.1 Visual inspection is adopted for appearance. 6.2.1.2 The system functions are verified by various performance tests, simulation tests and trial operations, and are compared and verified item by item. 6.2.1.3 Under the start-up operating conditions specified in Table 3, run continuously for 8 hours, and check the sensitivity and the safety protection device every 60 minutes. Reliability, check whether the operation of temperature and electrical control components are normal. 6.2.2 Air tightness The air conditioning unit is not energized and placed in a positive pressure room. Under the working conditions specified in Table 3, under the normal refrigerant charge, the sensitivity is 1×10-6 Pa·m3/s refrigerant leak detector for inspection. 6.2.3 Air supply volume, external static pressure, power Measure the air supply volume, external static pressure, and power according to the method specified in Appendix A, and convert them to the values under standard air conditions. The inspection shall be carried out in accordance with the test equipment and test methods specified in Appendix B. 6.2.4 Cooling capacity Perform the inspection according to the refrigeration conditions specified in Table 3 and the test equipment and test methods specified in Appendix C. The field test shall be performed according to the test specified in Appendix D The device and test method are inspected. 6.2.5 Cooling power consumption According to the test device and test method specified in Appendix C, while testing the cooling capacity, measure the cooling power consumption. The field test is in accordance with the appendix The test device and test method specified in D shall be inspected. 6.2.6 Heating capacity Perform inspection according to the test device and test method specified in Appendix C, and perform field test according to the test device and test method specified in Appendix D Test. 6.2.7 Heating power consumption According to the test device and test method specified in Appendix C, while testing the heating capacity, measure the heating power consumption. The field test should be in accordance with the appendix The test device and test method specified in D shall be inspected. 6.2.8 Maximum cooling operation 6.2.8.1 Under the rated voltage and frequency, run continuously for 1 h in accordance with the maximum load cooling conditions specified in Table 3; then stop for 5 minutes, and then restart Run continuously for 1 h. The overload protector is allowed to trip within the first 5 minutes of starting operation, and no tripping is allowed thereafter; in the first 5 minutes of operation If the internal overload protector does not reset or the unit is reset after stopping for less than 10 minutes, it should continue to operate for another 1 h, and the unit should be able to work normally. 6.2.8.2 For the overload protector that is manually reset, if it trips within the first 5 minutes, it shall be reset forcibly after 10 min. The group should be able to run continuously for another 1 h. 6.2.9 Minimum cooling operation Run for 4 hours under the minimum load cooling conditions specified in Table 3, and the air volume shall not be less than 75% of the rated air volume. 6.2.10 Condensate removal capacity After the condensate pan is filled with water to reach the drain outlet, run according to the cooling conditions specified in Table 3, and continue to operate after the condensate outlet is stable. After running for 4 hours, there is no condensation water leakage from other parts of the unit. 6.2.11 Test with water Run according to the cooling conditions specified in Table 3, and observe with white paper at the air outlet. 6.2.12 Continuous operation performance Operate the unit continuously for 8 h in accordance with the cooling conditions specified in Table 3 and the test device specified in Appendix C. 6.2.13 Ventilation adjustment performance Measure the air supply, external static pressure and power according to the method specified in Appendix A, and perform the field test according to the test device and test method specified in Appendix B. Line inspection. 6.2.14 Noise Under the conditions of air volume, external static pressure and input power, the inspection shall be carried out according to the test requirements and prescribed methods of GB 9068. 6.2.15 Safety test 6.2.15.1 Carry out various tests in accordance with the methods specified in GB 25130 (except for water spray insulation resistance test). 6.2.15.2 Under normal temperature and humidity conditions, carry out a water spray test with a water spray strength of 100 mm/h and a water spray angle of 45°. 1 h Then use a 500 V insulation resistance meter to measure the insulation resistance between the live part and the non-live metal part of the unit. Note. The factory inspection test items of the safety test include signs, packaging, insulation resistance, leakage current, grounding resistance, electric shock protection and withstand voltage test. Sampling inspection and type inspection are all items. 6.2.16 Driving and braking performance test Carry out the driving and braking performance test according to the method specified by MH/T 6014.

7 Inspecti......

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Question 1: How long will the true-PDF of MHT6109-2014_English be delivered?

Answer: Upon your order, we will start to translate MHT6109-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of MHT6109-2014_English with my colleagues?

Answer: Yes. The purchased PDF of MHT6109-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.