Heating Ventilation Air Conditioning

Our HVAC Turnkey Solutions Involves...

Building Survey & Feasibility Study

Feasibility studies are preliminary studies undertaken in the very early stage of a project. The purpose of Feasibility study is to collect the required input details from the client to do our load calculations.

Concept Design Submittal (Design Basis Report)

We will prepare and submit a report of findings with options considered, evaluation criteria, and recommendations. And we will submit Design basis report will contain all load calculation report, System selections, Advantage of proposed system, Energy saving though innovative design, implementation of new technologies, Energy analysis & cost analysis.

Budgetary Proposal

Approximate budget estimation of proposed project which helps client to make their project budget.

Detail Design Development

Detail design document will contain final design basis report and final design drawings as follows:

Heating and Cooling Load Calculations:

Performing heating and cooling load calculations for all conditioned building spaces to determine the zones and capacity of the new heating, ventilation, and air conditioning. Calculations will be based on: conduction and convection heat transmission, air ventilation and infiltration, solar heat gain, maximum anticipated staff and public occupancy, existing and future equipment, machines, appliances, and other internal building heat sources. Identify and locate all of the equipment, machines, appliances, and other similar internal building heat sources on the floor plans of the building. Include their BTU ratings so they can be used for the heating and cooling load calculations and future air conditioning system balancing.

HVAC Systems selections:

The HVAC Design will comply with all applicable codes and provide a design for the air conditioning, ventilation, and controls, considering efficiencies, life cycle operating and maintenance costs, energy rebates and/or grants, costs and schedules, etc. Includes all equipment’s schedules on the drawings indicating the air conditioning equipment’s by symbol designation, name and estimated size or capacity in TR/BTU, GPM, gallons, etc. Include ventilation schedules for all building spaces. Indicate the location of all air conditioning equipment, all major piping, and all duct runs in the mechanical room and floors of the building.

Duct Layout/Plant Layout

The layout will be designed in such a way for maximum air distribution. We will provide a design which includes plenums, ductwork, blowers, registers, grills, diffusers, dampers, volume adjustment devices, controls, etc. And will provide for proper outside air ventilation and air change quantities for the building.

Preparation of Bill of Quantities

Final bill of quantity will contain list of item in project and its quantity as per the final design drawings.

Preparation of Material Specification

Material specification will contain required detail of a material / equipment by the design, construction and performance of all listed item in BOQ.

Preparation of Tender Document

Tender document is final document issued to the specified contractor which contains all below three documents

• Tender Drawings
• Tender Bill of quantity
• Tender specification (will contain scope of work, approved makes and material specification)

Approval of all Data Sheets & Technical submittal

Verification of contractor construction document (like equipment technical data sheet, GA drawings, equipment performance curve) and construction drawings and approving the same.

Construction and Commissioning Management

Verification of project schedule, inspection of supplied equipment’s, inspection of work quality and final verification of equipment commissioning report and approving the same.

Construction and Commissioning

Execution of Project and Handing Over the site as per Schedule to the client with proper validation and reports.

Documentations

Documentation like DQ, IQ, OQ and Test Reports (PQ) as per ISO guidelines.

Chilled Water Systems

A chilled-water applied system uses chilled water to transport heat energy between the airside, chillers and the outdoors. These systems are more commonly found in large HVAC installations, given their efficiency advantages.

The components of the chiller (evaporator, compressor, an air- or water-cooled condenser, and expansion device) are often manufactured, assembled, and tested as a complete package within the factory. These packaged systems can reduce field labor, speed installation and improve reliability.

Alternatively, the components of the refrigeration loop may be selected separately. While water-cooled chillers are rarely installed as separate components, some air cooled chillers offer the flexibility of separating the components for installation in different locations. This allows the system design engineer to position the components where they best serve the space, acoustic, and maintenance requirements of the building owner..

Another benefit of a chilled-water applied system is refrigerant containment. Having the refrigeration equipment installed in a central location minimizes the potential for refrigerant leaks, simplifies refrigerant handling practices, and typically makes it easier to contain a leak if one does occur.

DX Systems

In a direct-expansion (DX) systems, the evaporator is in direct contact with the air stream, so the cooling coil of the airside loop is also the evaporator of the refrigeration loop. The term “direct” refers to the position of the evaporator with respect to the airside loop.

The term "expansion" refers to the method used to introduce the refrigerant into the cooling coil. The liquid refrigerant passes through an expansion device (usually a valve) just before entering the cooling coil (the evaporator). This expansion device reduces the pressure and temperature of the refrigerant to the point where it is colder than the air passing through the coil.

The components of the DX unitary system refrigeration loop (evaporator, compressor, condenser, expansion device and even some unit controls) may be packaged together, which provides for factory assembly and testing of all components, including the electrical wiring, the refrigerant piping, and the controls. This is called a Packaged DX system.

One of the most common reasons for selecting a DX system, especially a packaged DX system, is that, in a smaller building, it frequently has a lower installed cost than a chilled-water system because it requires less field labor and has fewer materials to install. Packaged DX systems that use air-cooled condensers can be located on the roof of a building, in a small equipment room, or even within the perimeter wall of the building.