HVAC Project (Residential) 空调通风工程(住家)

A residential HVAC project including air conditioning and fresh air refers to designing, installing, and commissioning a system that provides thermal comfort and indoor air quality in a home. Here’s what the job is about:

1. Core Purpose

• Provide Cooling & Heating – Maintain comfortable indoor temperature.

• Ensure Fresh Air Ventilation – Introduce outdoor air to maintain good indoor air quality (IAQ).

• Control Humidity – Maintain proper humidity levels for comfort and health.

• Energy Efficiency – Optimize system performance to reduce energy consumption.

2. Main Components

• Air Conditioning (Aircond):

  • Split units, multi-split, VRV/VRF systems, or central ducted systems.

• Fresh Air System:

  • Fresh Air Handling Unit (FAHU) or Energy Recovery Ventilator (ERV) to supply filtered outdoor air.

• Ductwork & Diffusers:

  • Distribute conditioned and fresh air evenly in the house.

• Controls & Thermostats:

  • For temperature, humidity, and ventilation control.

3. Scope of Work

1. Site Survey & Load Calculation:

   • Calculate heat load (BTU/h) for each room.

   • Determine fresh air requirement per ASHRAE/Local standards.

2. System Design:

   • Select AC units, fresh air fans, filters, duct sizes, and layout.

3. Installation:

   • Install indoor/outdoor AC units.

   • Install ductwork for air distribution.

   • Install fresh air intake, filtration, and exhaust system.

4. Commissioning & Testing:

   • Vacuum and charge refrigerant properly.

   • Balance airflow for both AC and fresh air.

   • Test indoor air quality (CO levels, humidity).

5. Handover & User Training:

   • Explain system operation, maintenance schedule.

4. Why Fresh Air is Important

• Reduces CO build-up.

• Prevents stuffiness and odor.

• Improves health by diluting indoor pollutants.

HVAC ù

1.

• ——

• —— IAQ

• ——

• Ч ——

2.

• Aircond

  • VRV/VRF

• • 飨FAHUERV

3. Χ

1. 为

   • 为BTU/h

   • ASHRAE

2. • 豸缰á

4. • CO

4.

• CO

• ζ