Hvac system components pdf

Optimization of initial cost with operating costs. Larger ducts have lower velocity, pressure drop, and fan energy Small ducts reduce ducting costs and save building space Double duct size reduces fan power by factor of 32! Dissecting HVAC Systems The goal of the heating, ventilating, and air conditioning ( HVAC ) system is to create and maintain a comfortable environment within a building. A comfortable environment, however, is broader than just temperature and humidity. The receiver drier stores a portion of the system’s refrigerant and contains a moisture absorbing substance to remove any moisture the system may become contaminated with.

The AC compressor is the workhorse of the system and is driven by your car’s engine via a series of belts and pulleys.

The H, the V, the AC in one piece of equipment. Uses air dampers, and chilled and heating water from the chiller and the boiler to heat and cool the air. Also filters the air and draws in outside air. The evaporator coil is set in a metal box, usually just outside of the furnace. A blower fans hot air in, usually from a return duct in the system.

The refrigerant in the coil evaporates in the heat , which in turn cools the air around it. The cool air is blown out to be distributed through the building,. The HVAC stands as a marvel of modern air conditioning and heating technology.

To provide you with that perfectly treated air, an entire process occurs behind the scenes.

The thermostat is usually the most visible part of your HVAC system. Set on a prominent, easily accessible wall, it may be either programmed in advance or set manually to keep the home at a desired temperature. When the ambient temperature becomes too cold or too hot,. Components of an HVAC System.

There are two main components of a heating, ventilation, and air conditioning system. These two parts are the air handler, heating and cooling system , and the heat exchanger. In most cases, the heat source is some type of furnace.

In an air conditioning system , the cooling system is composed of a number of unique subcomponents. The furnace, of course, plays a major role in home heating, unless your home uses a heat pump, boiler system, radiant heating, solar heating or another alternative system. What components make up a home HVAC system? What are the main components of a HVAC system?

How to design HVAC systems? What is the function of a compressor in a HVAC system? Perimeter Outside Air Ventilation Systems. HVAC – Heating, Ventilation, Air-conditioning. F (20°C) and 75°F (25°C).

A slightly positive pressure to reduce outside air infiltration. Rooms typically have several complete air changes per hour.

Typically volts is the operating voltage for HVAC controls. Design Options For HVAC Distribution System Course Content CENTRAL HVAC SYSTEM – AN OVERVIEW The objective of an HVAC (heating, ventilating, and air-conditioning) system is to control the temperature, humidity, air movement and air cleanliness, normally with mechanical means, to achieve thermal comfort. HVAC (pronounced either ‘H-V-A-C” or “H-VAK”) is an acronym that stands for “heating, ventilation and air-conditioning.

Often installed into a single system, these three functions of the HVAC system are closely interrelated to provide thermal comfort and to maintain good indoor air quality. HVAC system consists of an air conditioning plant and a thermal distribution system as shown in Figure 1. Warm air systems distribute heated air - and return air - through metal or fibreglass ducts. Many systems use the same ducts to distribute air cooled by an evaporator coil for air conditioning.

The air supply is typically filtered through air cleaners to remove dust and pollen particles. The “hot” side generally consists of a condensing coil, a compressor and a fan. It’s located centrally in the home and programmed according to the occupants’ preferences.

The furnace is located in the home and its job is to heat the air that comes through the system. Heat Exchanger Your heat exchanger is part of the housing of your furnace, and it absorbs heat and warms cool air when your thermostat activates your furnace and the heat from combustion rises.