Upgrading of Existing Central Air-Conditioning System at TIA, Kathmandu, Nepal
Upgrading the central air-conditioning system of the International Terminal Building at Tribhuvan International Airport, Kathmandu. The project involves installation of heat pump type air-cooled chillers, AHUs, ducting, piping, insulation, and electrical systems, including dismantling of obsolete R-22 units, ensuring energy efficiency, environmental compliance, and adherence to international HVAC standards
Project Overview
The project covers the upgrading of the existing central air-conditioning (AC) system at the International Terminal Building of Tribhuvan International Airport (TIA). The scope includes supply, delivery, installation, testing, commissioning, and handing over of all specified equipment, accessories, and associated works.
The upgraded system will be a year-round heat pump AC system with both heating and cooling facilities, supported by heat pump-type air-cooled chillers.
The installation includes the following:
- Air-cooled chillers
- AHU units
- Chilled water piping connections
- Air distribution system
- Insulation
- Electrical panels & switchgears (DB, MCB, MCCB)
- Electrical power and control cabling with earthing
- Associated accessories as per layout and drawings
- Fresh air supply will maintain ~10% ventilation to ensure CO₂ control.
Scope of Work
- Dismantling & Relocation Works
- Removal of Existing Refrigerant Piping
- Ductwork Dismantling
- AHU & Condensing Units Removal
- Electrical Works
Conclusion
This project will upgrade the existing central air-conditioning system at Tribhuvan International Airport to a modern, energy-efficient, heat pump-based hydronic system. The contractor shall ensure compliance with international standards, environmental responsibility through R-22 reclamation, and adherence to TIACAO requirements for documentation, safety, and workmanship.
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