Experimental and Theoretical Investigation of Reducing Energy Consumption for a Building using Geothermal Water through the Glass

Electricity consumption is the main criterion for identifying green buildings that contribute to the sustainable development of the world. The aim of this study was to reduce the utilization of electrical energy by air-conditioning devices, by decreasing heat gain via the glass of buildings. The study found that the maximum energy consumption for air conditioners was 48% of total energy in a building. The glass significantly contributes to waste and electrical energy heat loss by heat transfer to the inside of the building. The study showed that the largest surplus of cooling load for a glass type (triple glazing 4/12/4/12/4mm air-filled clear glass) is 44.7 tons, and the lowest simple payback period is 2.19 years for glass type double glazing 5/12/5 mm air-filled clear glass, when the current glass in the building was replaced with six different types of glass. Finally, double glass is improved by adding geothermal water into the heat sink, to remove some of the heat that comes from out. Experimental and numerical results (ANSYS-15) showed that the use of geothermal water decreased heat transfer through glass by nearly 6%.