Geothermal Process in Mechanical Building system

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Omar Rizq-allah Ahmad
Mohammed YaserItmaizeh
Rafat Jalal Basheer
Osaid Mohammed Assaf
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The aim of our project is to find some comparison between traditional system in HVAC(Chiller and Boiler) against Geothermal system in HVAC.The comparison criteria was concerned in cost and efficiency  .The designing of both systems were prepared to achieve a desired situation, sizing and equipment selection were prepared too.             HVAC (Heating, Ventilation and Air Conditioning) is widely known as today climate control. This system is employed in hospitals, office spaces and widely used in many systems  where the temperature, humidity and ventilation  has to be maintained at a constant level to produce the best environment for healthy . The HVAC systems are very popular because of its easy installation, low maintenance and low operating costsHVAC system is composed of components and equipment arranged in sequence to condition the air, to transport it to the conditioned space, and to control the indoor environmental parameters of a specific space within required limits. Distribute the conditioned air, containing sufficient outdoor air to the conditioned space. Control and maintain the indoor environmental parameterssuch as temperature, humidity, cleanliness, air movement, sound level, and pressure differential between the conditioned space and surroundings-within predetermined limits. So arrangements of components used to provide appropriate characteristics.The total heating load was 104 KW  ,and the cooling load was 131.05 KW  Geothermal Heat from the earth can be used as an energy source in many ways form large and complex power station to small and relatively simple pumping system .This heat energy known as geothermal energy, Then thermal energy is generated and stored in the Earthand determines the temperature that converted to an energy that used for cooling and heating.The use of geothermal resources can be broken down into four general categories high temperature more than 150oC electric power production, intermediate (90-150oC), low temperature direct-use application less than 90oC, and ground source heat pump less than 32oC.[2] Geothermal energy is generated in the Earths core, almost 4,000 miles beneath the Earths surface. The double-layered core is made up of very hot magma(melted rock) surrounding a solid iron center. Very high temperatures are continuously produced inside the Earth by the slow decay of radioactive particles. This process is natural inall rocksSurrounding the outer core is the mantle, which is about 1,800 miles thick and made of magma and rock. The outermost layer of the Earth, the land that forms the continents and ocean floors, is called the crust. The crust is three to five miles thick under the oceans and 15 to 35 miles thick on the continents.The crust is not a solid piece, like the shell of an egg, but is broken into pieces called plates. Magma comes close to the Earths surface near the edges of these plates. This is where volcanoes occur. The lava that erupts from volcanoes is partly magma. Deep underground, the rocks and water absorb the heat from this magma. Plumbing (from the Latin plumbum for lead) is the skilled trade of working with pipes, tubing and plumbingfixtures for drinking water systems and the drainage of waste. A plumber is someone who installs or repairs piping systems, plumbing fixtures and equipment such as water heaters. The plumbing industry is a basic and substantial part of every developed economy due to the need for clean water, and proper collection and transport of wastes .Plumbing also refers to a system of pipes and fixtures installed in a building for the distribution of potable water and the removal of waterborne wastes. Plumbing is usually distinguished from water and sewage systems, in that a plumbing system serves one building, while water and sewage systems serve a group of buildings or a city. Fire protectionis 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.Cost Analysisthe difference between the geothermal system and the normal system will be exposed. As it known, the geothermal system will have high initial cost due to drilling operations, but it has no maintenance cost and small running cost differing from the normal system which has a large running cost, and needed maintenance sometimes.the vertical boreholes and the type of the heat pump was a major diffrenece in two system comparison . The heat pump that is used in geothermal system is called the GSHR or water to air/water heat pump, these differences has major effect on the initial cost of geothermal system.