HVAC DESIGN ESTIMATION AND DRAFTING

Retouchreform is one of the extensively skilled companies taking care of HVAC projects in India and overseas. We follow ASHRAE guidelines to deliver HVAC consultancy and design projects. Our engineers are certified Mechanical/HVAC design experts and having professional experiences.

  • Blueprint

    01/ Building Survey

    Feasibility studies are preceding studies initiated in the very early stage of a project to collect the required input details from the client to do our load calculations.

  • Engine

    02/ Selection of Systems (Classification of Machines)

    Based on the building survey report we will offer/think about the HVAC system which may deploy to the site, all are conceptual. You will have options to choose the right system. We will give a budgetary proposal and prepare detail design related documents. 

  • Image by Chris Liverani

    03/ Load Calculation (Cooling and Heating loads)

    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.

    Factors of Calculations: 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.

  • Motherboard Installation

    04/ Machine Selection

    Factors affecting machine selection -

    • Site condition

    • Economic condition

    • Client requirement

    • Interior requirement

    • Space availability

    • Noice level

    • Outside wall availability for Window A/C

    • Availability of water for a water-cooled chiller

    As a design consultant, we will select the best cost-effective system for the client -

    • Window A/C Selection

    • Split A/C Selection

    • Ductable Split A/C Selection

    • Package A/C Selection

    • VRF A/C Selection

    • Chiller A/C Selection

    • AHU Selection

  • Air Duct

    05/ Duct desiging

    Duct systems are designed to properly distribute air throughout a building. Ducts that are not well designed result in discomfort, high energy costs, bad air quality, and increased noise levels.

  • Vents

    06/ Fan Selection

    A fan is the prime mover of an air system or ventilation system. It moves the air and provides continuous airflow so that the conditioned air, space air exhaust air or outdoor air can be transported from one place to another through air ducts or passages.

  • Pipe Testing

    07/ Chill Water Pipe Designing

    Piping which join the pump, the chilled and FCU or AHU in which chill water is supplied is called secondary or chill water piping.

    Methods for chilled water pipe design - Constant velocity method and Veclocity + Friction method.

  • Plumbing

    08/ Fittings Selection

    In the Hydronic system, the chilled water pipes are usually joined with either screwed or welded flanges, fittings or compression joints.

    Types of fittings - Pipes fittings and Machine fittings (Chiller, Pump, AHU or FCU etc).

  • Fixing an Air Conditioner

    09/ Selection of type and size of equipment

    Selection of type and size of equipment is crucial as far as the smooth and cost-effective system. We will ensure it during the design of a system.

  • Technicians at Work

    10/ Planning the location of each piece of equipment in the building

    Planning the location of each piece of equipment in the building is important in during design to get most out of the system. Our team will always emphasise on the matter to ensure efficiency.

  • Technicians at Work

    11/ Drafting and documentation of HVAC system

    Duct layout/Plant layout - We will provide you the complete design layout with all used components like plenums, ductwork, blowers, registers, grills, diffusers, dampers, volume adjustment devices, controls, etc. Outside air ventilation and air change quantities for the building.

    Preparation of Bill of Quantities (BOQ) - List of item in project and its quantity as per the final design drawings.

    Preparation of material specification - Detail of a material / equipment by the design, construction and performance of all listed item in BOQ.

    Preparation of tender document - Tender Drawings, Tender Bill of quantity and Tender specification (will contain scope of work, approved makes and material specification).

  • Technicians at Work

    12/ Approval of all data sheets and technical submittal

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

  • Technicians at Work

    13/ 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.

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