HVAC (Heating Ventilation and Air Conditioning)
The heating, ventilation and air conditioning (HVAC) system of any building is like the respiratory system of a human being. It controls the movement, quality and temperature of air to ventilate, warm and cool the organism. Energy is consumed by the parts of the system that heat and cool the air and movement of air with fans requires energy. Air or water is heated or cooled using direct contact with heat or refrigerants and pushed through pathways (ducts or tubes), escaping through outlets or vents until it travels throughout the structure.
The air or water then returns to its origin to be heated or cooled again. Well-engineered ventilation patterns aid circulation, introduce fresh air and controls the buildup of carbon dioxide (a byproduct of human respiration), carbon monoxide (from combustion sources) and miscellaneous toxic gases from building materials and household activities. Well-designed HVAC systems, passive filters, insulation and gravity make the system more effective and efficient. New conservation practices and systems using alternative energies are being designed to improve efficiency.
Types of HVAC Systems
HVAC is an acronym that stands for "heating, ventilating and air conditioning." HVAC systems are used for climate control, particularly temperature and humidity levels. HVAC systems come in a broad range of sizes and complexity.
They range from:
- SCREW CHILLERS
- CENTRIFUGAL CHILLERS
- SCROLL CHILLERS
- DOUBLE SKIN AIR HANDLING UNITS
- FAN COIL UNITS
- PACKAGED ACS & DUCTED SPLITS
- LONG DISTANCE PIPING PACKAGED ACS
- HIPER PACKAGED ACS
- VRF SYSTEMS
Single Zone
Single zone HVAC systems serve only one area of a building. All of the rooms in this area must have similar cooling and heating vents that are regulated by a common thermostat.
Multiple Zone
Multiple zone HVAC systems provide more than one area of a building with cooling and heat. Each zone can have a different temperature regulated with separate thermostats.
Constant Volume
Constant volume HVAC systems are designed to provide each zone with a constant volume of airflow. Temperatures are changed by switching the HVAC unit on or off.
Variable Volume
Variable volume HVAC systems allow users to vary the amount of cooled or heated air delivered to each zone. This type of HVAC system tends to overcool or overheat areas.
The basic components of an HVAC system
The components of HVAC system that delivers conditioned air to maintain thermal comfort and indoor air quality are:
- outdoor air intake
- mixed-air plenum and outdoor air control air filter
- heating and cooling coil
- humidification and/or de-humidification equipment
- supply fan ducts
- terminal device
- return air system
- exhaust or relief fans and air outlet
- self-contained heating or cooling unit control
- boiler
- cooling tower
- water chiller
CONSULTING SERVICES
We are engaged in providing consulting services in various fields that are catering to the requirements of diverse sectors such as residential, commercial, hotels, hospitals, industrial, institutional & design audit & proof consultancy works.
We offer consulting solutions in the following areas:
- Feasibility Study
- Conceptual Planning
- Preliminary Design Report and Budget
- Estimates
- Detailed Planning
- Working Drawings
- Specifications
- Bill of Quantities
- Detailed Cost Estimates
- Notice Inviting Tender
- Techno-commercial Comparative Statements
- Recommendation for Award
- Contract Agreement
- Verification & Approval of Shop Drawings
- Intermittent Site Supervision
- Testing and Commissioning Participation
- Assistance in preparation of As-Installed Drawings
- Assistance in preparation of Operation & Maintenance Manuals & Log Books
- Design Audit
- Energy Audit
- Energy modeling w.r.t. Equipment Selection
- Up gradation of the existing MEP Services/systems
ELECTRICAL (LV & MV) DESIGN
We provide MV & LV architecture selection guide Given a particular building, we show how to select the right solution during pre-design and budget step and find a compromise between costs and ratings of the installation during its whole life cycle.
A/C & REFRIGERATION PLANTS / SYSTEMS
There are various types of A/C & Refrigeration Plant that we undertake.
- Split Type Chiller Plant
- Water & Brine Chilling Plant
- Package Chiller System
- Industrial Process Cooling System
- Recirculation Package Chiller
- Split Type Chiller Plant
- Custom Made Chiller System
- Screw Chiller
- Scroll Chiller
REPAIRING & MAINTENANCE SERVICES
Repairing of Any Type of Air Conditioners/Refrigeration Plants System Modification/Shifting of Any Type Of Air Conditioners/Refrigeration Plants System Retuning of Heat Exchangers, Shell & Tube Condensers & Chillers Regular AMC of Plants / Systems.
FIRE-FIGHTING AND FIRE-PROTECTION SYSTEM
The Fire Protection systems offered by us are well renowned in various sectors owing to their high end features. These are equipped with portable fire extinguishers of water, carbon-dioxide and foam type.
Fire protection is the study and practice of mitigating the unwanted effects of fires. It involves the study of the behavior, compartmentalization, suppression and investigation of fire and its related emergencies, as well as the research and development, production, testing and application of mitigating systems.
In structures, be they land-based, offshore or even ships, the owners and operators are responsible to maintain their facilities in accordance with a design-basis that is rooted in laws, including the local building code and fire code, which are enforced by the Authority Having Jurisdiction.
Buildings must be constructed in accordance with the version of the building code that is in effect when an application for a building permit is made. Building inspectors check on compliance of a building under construction with the building code. Once construction is complete, a building must be maintained in accordance with the current fire code, which is enforced by the fire prevention officers of a local fire department. In the event of fire emergencies, Firefighters, fire investigators, and other fire prevention personnel called to mitigate, investigate and learn from the damage of a fire. Lessons learned from fires are applied to the authoring of both building codes and fire codes.
Full Range of Fire Extinguishers
- Fire hydrant system
- Fire sprinkler system
- Fire extinguishers
- Fire detection and alarm system
- Fire suppression system
- Public address system
Types of Fires
Class "A" Fires
Type of Materials:- Ordinary combustibles such as wood, paper, cloth, rubber and some plastic
- Keep storage and working areas free of trash and cluttering.
- Extinguish ordinary combustibles by cooling the material and soaking the fibers to prevent re-ignition.
- Use Pressurized Water, foam, or multi-purpose (ABC) dry chemical fire extinguishers
- DO NOT BSE: Carbon Dioxide, or ordinary (BC Rated) dry chemical fire extinguishers.
Class "B" Fires
Type of Materials:- Flammable or combustible liquids such as gasoline, kerosene, paint, point thinners and propane.
- Do not re-fuel gas-powered equipment in a confined space without a external flow of oxygen (IE via a window) or near an open flame.
- Do not re-fuel gas-powered equipment when it is hot or was just used.
- Keep flammable liquids tightly sealed in spill proof containers.
- Store flammable liquids away from spark-producing sources.
- As always, keep dangerous chemicals out of reach of children.
- Extinguish flammable liquids by removing oxygen from the fire, thus preventing hazardous vapors from reaching ignition point and stopping a potential chemical reaction causing fire
- Use Foam, carbon dioxide ordinary (BC Rated), or chemical fire extinguishers.
Class "C" Fires
Type of Materials:- Any Electrical Equipment such as appliances, switches, electrical boxer, or power tools.
- Look for and replace any old worn away electrical wiring
- Keep motors clean and in good working order in order to prevent overheating
- Utility lights should always house same type of wire guard over them. Heat from an uncovered light bulb can easily ignite ordinary combustibles.
- Investigate any electrical equipment that smell wired, this may be the first sign of a potential fire.
- Don't overload outlets, two outlets should have no more than two plugs.
- If possible, remove the source of energy by unplugging or disconnecting the electrical equipment
- Use Carbon dioxide, ordinary (BC-rated) dry chemical, multi-purpose dry chemical and fire extinguishers.
- Do not use water on ANY energized electrical equipment.



