Energy Savings in HVAC System Using Green Building Practice and Its Environmental Benefits With an Example From Greater Noida, India

Abstract

An attempt to save energy in an HVAC system using green building practices has been made in this paper. The two blocks of the building of Priyadarshini College of Computer Sciences and Engineering located in Greater Noida, Uttar Pradesh, India have been selected one as non-green (Block A) and other as green (Block B). Primary weather data, with temperature & relative humidity as variables, were measured daily in at least fifteen locations on each floor, of two hour’s interval (7.00am to 6.00 pm) during April to July 2017.

The temperature difference of lawn area and each block has been calculated to determine the amount of energy that will be consumed by the air-conditioning (AC) system to maintain the normal atmospheric conditions in each block. Finally, a comparative analysis to quantify hourly, monthly and annual energy consumption, CO2 emission and cost and energy savings have been calculated.

The study shows that a partial green block of the building can save 3,07,332 kWh of energy, 1,536,840 rupees and reduces 4,94,820 kgCO2/kWh of CO2 emission annually. Thus green buildings have a high potential for energy and money savings, reduction of CO2 emission, increasing efficiency and lifetime of ACs, and ultimately to save nature.

Keywords: CO2 Emission; Global Warming; Climate Change; HVAC system; Energy Saving; Green building