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Controlling Thermal Conditions in an Environment

Heating, cooling and air conditioning (HVAC) systems can be described as technology for the indoor environments that enhances comfort for the occupants. The HVAC systems aims at enhancing the thermal conditions are good such that it is not too hot or too cold as well as ensuring that the quality of the indoor air is good. The design of the HVAC systems is based on various principles in disciplines such as thermodynamics, heat transfer as well as fluid mechanics. The systems used in the heating and cooling of the indoor environment are suitable for all building that aims at meeting the necessary conditions for safe and healthy living through the use of fresh air from the outdoor environment. Family homes, hotels, apartments, office and industrial buildings, hospitals as well as ships and the submarines are the various places that can use the HVAC systems for a comfortable living.

Ventilation is one of the process enhanced through the HVAC system where the indoor air is replaced with the outdoor air to enhance good quality of the indoor air. Temperature control through cooling, replenishment of oxygen as well as removing dust, smoke, moisture, odours, airborne bacteria, carbon dioxide among other substances and gases are some of the processes that take place during ventilation to enhance the quality of air in the indoor environment. Use of the HVAC system is a mechanical form of ventilation which also ensures that the air from the outdoor environment is circulated evenly within the room for uniform proper air quality. Mechanical ventilation using the HVAC system is used as a back up or a supplement of the natural ventilation through the opened windows, trickle vents and the louvers. Ventilation enhances release of excessive heat hence cooling.

During the cold periods, the temperatures of a building might be too low making living conditions unbearable and uncomfortable hence need for heating. Heaters are the appliances used in the process of providing heat for the indoor environment to enhance the living conditions. Heating in a building can be done from various sources such as furnace, boiler, heat pumps that heat water, steam, furnace rooms and electricity where the heat is transferred into the building through various processes such as radiation, convection and conduction.

Fuels used by the various sources of heat can produced hazardous by-products due to incomplete combustion as a result of reduced oxygen such as carbon monoxide which are a health hazard to the occupants in case inhaled. In a building when in need of heating and cooling apparatus, one needs to get professional service provider. These people have the knowledge and expertise needed and also have the right tools and equipment who ensure that there is safe installation.

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