HVAC System

what is a gate valve

Gate valves consist of a solid wedge mounted within the valve body, which is connected to the internal end of the valve stem. A handwheel actuator is connected to the external end of the valve stem for manual operation. When the valve stem is turned completely in the counterclockwise direction, the wedge is raised to …

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what is a globe valve

Globe valves consist of a solid disc mounted within the valve body, which is connected to the internal end of the valve stem. A handwheel actuator is connected to the external end of the valve stem for manual operation. When the valve stem is turned completely in the counterclockwise direction, the disc is raised to …

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all water systems

water is used as working fluid that transports thermal energy between conditioned space and A/C plant. Chilled water is circulated for cooling while Hot water is circulated through coils for space heating. As only water is supplied by HVAC plant to the space, Fresh air has to be supplied by another unit to maintain Indoor …

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All Air Systems

Air is used as the media in an all air system. Air transports thermal energy from the conditioned space to the HVAC plant. As shown in Figure , In these systems air is processed in the A/C plant namely AHU (Air Handling Unit). AHU consists of Dampers, Mixing chambers, Filters, Cooling/ Heating coils, Humidifiers, Fans/ …

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AIR DUCT WORK

is the channel that carries cooled air from the air conditioning unit through your home, and can also remove warm or stale air. it is made in different shapes like rounded or rectangular and insulated. They are normally made of GI sheets,fiber glass lined. TYPE OF DUCTS SUPPLY AIR DUCT RETURN AIR DUCT FRESH AIR …

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Air Distribution system

 Air Distribution system Is the Distribution of Conditioned Air in Buildings and Rooms in Order to Maintain Temperatures, Humidity and Air Velocities within Occupied Space at Acceptable Conditions. It includes air handlers, ductwork, and associated components for heating, ventilating, and air-conditioning buildings. Types of Air Distribution Constant-volume systems (CV) operate at a constant airflow rate; …

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air diffuser

normally has profiled blades to direct the air at an angle as it leaves the unit into the space . Alternately ,Grille is used for vertical discharge -they are fabricated of aluminum,  stainless steel ,plastic painted or chromated. they come in different shapes like bar,egg,linear,louver depending on its application. TYPES OF DIFFUSERS/GRILL Lover Bladed Diffuser these are …

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COOLING TOWER

A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the water’s temperature. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the tower. Cooling tower acts as the cooling …

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AIR HANDLING UNIT (AHU)

is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system. Usually enclosed in a large insulated box containing fans/blowers , dampers, filter,heat exchangers (evaporator), humidifiers , mixing box and its controls. Used to control temperature , humidity , air movement  and air cleanliness TYPES OF AIR HANDLING UNIT (AHU) …

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