1. Define the required duty
State whether the unit will heat, cool, condense or evaporate the working medium. Provide required duty when available, along with entering and leaving temperatures.
- Working medium or refrigerant
- Required heat-transfer duty
- Entering and leaving conditions
- Normal and maximum operating conditions
2. Describe both sides of the exchanger
For an air-side coil, provide airflow and air condition data. For the fluid or refrigerant circuit, provide flow rate and allowable pressure drop when these are design constraints.
- Airflow and ambient or inlet condition
- Fluid or refrigerant flow rate
- Allowable pressure drop
- Flow direction and circuit preference
3. Control the physical interfaces
Attach a drawing or dimensioned sketch showing the maximum envelope, mounting points, connection locations and required service clearances.
- Overall length, width and height
- Connection size, type and orientation
- Mounting holes and frame interfaces
- Tube rows, fin spacing or casing constraints
4. Confirm inspection and delivery scope
List the required material, coating, test method, documentation, packing and order quantity. These items affect the quotation and release plan.
- Material and coating
- Test or inspection requirement
- Required release documents
- Quantity, packing and delivery target
Frequently asked questions
Project questions
Can I request a quotation without a finished drawing?
Yes. A dimensioned sketch and complete operating inputs can start the review, but final production remains controlled by an approved drawing.
Why is airflow needed for a finned heat exchanger?
Airflow and air conditions are part of the design basis for air-side heat transfer and pressure-drop review.