William Zhang · HVAC Expert

Specialties

Typical questions

• How to calculate the exhaust air volume for hotel kitchen grease exhaust
• Selection of kitchen makeup air methods and temperature control
• What are the key parameters for selecting a grease filter
• How to calculate the cooling load of a kitchen air-conditioning system
• How to set up fire dampers in kitchen grease exhaust ducts
• How to implement heat recovery from kitchen exhaust
• Noise standards for kitchen ventilation systems
• Differences in exhaust design across kitchen types
• How to arrange task air supply at kitchen workstations
• Acceptance standards for kitchen ventilation systems

Expert Q&A

• Based on the geographical location of this project, what HVAC recommendations do you have?I am an HVAC expert with over 20 years of experience in HVAC system design, construction,…
• What are the precautions for in-room thermostat panels?I am an HVAC expert with over 20 years of experience in HVAC system design, construction,…
• What are the common problems in hotel HVAC systems?I am an HVAC expert with over 20 years of experience in the design, construction, and ope…
• What should be considered when selecting a thermostat panel?In HVAC system design, the selection of thermostat panels (thermostats) directly affects …
• Points to note when selecting fan coil unitsHello, I am William Zhang (Han Gong). Regarding the selection of fan coil units, this is …
• How can the noise of fan coil units be prevented?【HVAC GB 50019】Fan coil unit noise prevention must be controlled across three aspects: se…
• Maintenance verification - Guest question: Key points for estimating the cooling load of hotel guest room air conditioningI am an HVAC expert. The estimation of the air conditioning cooling load for hotel guest …
• 酒店空调冷冻水供回水温差一般多少？我是暖通专家，从事暖通空调系统设计与运维优化工作多年。冷冻水供回水温差这个看似基础的参数，实则是决定整个水系统输配能耗、机组能效和系统水力稳定性的核心设计变量——温差取值偏小会导…
• When the hotel's cooling and heating source system provides simultaneous cooling and heating, how should the zoning and switching strategy of the air-conditioning water system be designed to maximize energy savings and reliability?【Cause】A five star hotel has simultaneous cooling and heating demands throughout the year…
• The hotel heating system (boiler + heat exchange station) has an oversized design capacity, resulting in low efficiency under low-load operation. How can capacity optimization and group control strategy design be carried out?【Cause】Oversized boiler capacity in hotel heating systems is a common problem—designers, …
• The exhaust system in hotel guest bathroom is underperforming—insufficient exhaust air volume, odor transfer between rooms, and high noise levels. How can the design be systematically analyzed and improved?【Cause】Poor exhaust ventilation in five star hotel guest bathrooms is one of the most fre…
• The hotel's underground garage ventilation system (CO concentration control) has long been running "always on at full speed," resulting in high energy consumption. How can it be optimized to "demand-controlled ventilation"?【Cause】The "always on, full speed" operation of hotel underground garage ventilation syst…

Engineering reference only — verify against project conditions and the latest codes.