As a HVAC operation and maintenance engineer, you may encounter some common problems during the interview:
Basics
1. What are the basic components of an HVAC system?
A brief description of fans, cooling towers, chillers, piping systems, etc. can be provided.
2. What is the full name of HVAC and what are its main functions?
- HVAC is the abbreviation of "Heating, Ventilation, and Air Conditioning". Its main function is to provide a comfortable indoor environment.
Technical issues
3. How to calculate the load of the air conditioning system?
- You need to understand the calculation methods of heating load and cooling load, and the commonly used calculation tools and formulas.
4. Explain how the refrigeration cycle works.
- Includes the refrigerant change process (evaporation, compression, condensation, throttling).
5. How to determine whether an air conditioning system is operating normally?
- Observe the equipment operating status and energy efficiency ratio by monitoring parameters such as temperature, pressure, flow rate, etc.
Practical operation
6. During the operation and maintenance process, how do you conduct equipment inspections?
- Describe the inspection steps, key points to be checked and tools to be used.
7. What is your process when equipment fails?
- Includes steps for troubleshooting, logging, reporting, and repair.
Safety and regulations
8. In HVAC operation and maintenance, what are the precautions for safe operation?
- For example, electrical safety, gas leak detection, equipment operating procedures, etc.
9. How to handle and record equipment maintenance and failure conditions?
- Emphasize the importance of using a maintenance management system or record keeping form.
other
10. What are your thoughts on new technologies such as smart buildings or the Internet of Things?
- You can share your views on the future development of HVAC operation and maintenance.
When preparing these questions, you can combine your actual experience and cases to demonstrate your professional ability and problem-solving thinking.
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