Complete HVAC System Design (Cooling Load, ESP, Duct Sizing, Fresh Air, & Shop Drawings) – Bank Project

Complete HVAC System Design for a 500 m² Bank Building – Cooling Load, ESP, Duct Sizing & Fresh Air Calculations

This project represents a full HVAC design for a commercial bank building with a total area of 500 m², including Ground Floor, First Floor, and Roof mechanical layouts. The design covers all engineering calculations and shop drawings required for execution.

Scope of Work:

? 1. Cooling Load Calculations

Full cooling load estimation for all zones (BTU/H & Tons).

Sensible & latent load calculations.

Determining required airflow (CFM) for each room according to ASHRAE.

Selection of suitable units (Hi-Wall Split, Concealed FCU, Package Units).

? 2. Duct Design & Sizing

Designing supply and return air duct systems.

Duct sizing using the friction method.

Static pressure calculation (ESP) including:

Duct friction loss

Fittings loss

Volume damper loss

Supply and return outlet losses

Identifying the critical path for each system.

? 3. Fresh Air Ventilation System

Calculating fresh air requirements for each space based on ASHRAE 62.1.

Providing outdoor air CFM values for all rooms.

Fresh air duct routing and integration with HVAC units.

? 4. Sheet Metal Calculation

Calculation of duct surface area (Width × Height × Length).

Selecting sheet metal thickness according to SMACNA standards.

Determining total duct weight for fabrication and BOQ.

? 5. Mechanical Schedules

Indoor/Outdoor unit schedules including:

Cooling capacity

Sensible load

Airflow (CFM)

ESP

Refrigerant type

Piping sizes

Power requirements

Roof plan showing condensing units distribution.

? 6. Shop Drawings

Ground floor HVAC plan

First floor HVAC plan

Roof equipment plan

Duct routing, refrigerant piping, fresh air ducts

Full coordination with architectural layout

Software Used:

AutoCAD – Excel – ASHRAE Standards – SMACNA Manual

? Summary

This project demonstrates strong engineering skills in HVAC system design, including cooling load analysis, duct sizing, static pressure calculation, fresh air estimation, unit selection, and complete mechanical drafting for a 500 m² commercial building.