Engineering

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Browsing Engineering by Advisor "Tri-Ratna Bajracharya"

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    Variation Analysis in Cooling load between Single Pane Window and Double Glass Window in an Air-Conditioned Space
    (I.O.E, 2024-06) Sah, Archana; Tri-Ratna Bajracharya
    This thesis compares the changes in the cooling load of an- air-conditioned space if doubleglazing glass is used in windows instead of when single-pane glass. It investigated the effect of glass and its solar gain capacity in indoor temperature and finally on the air conditioning of the building. It is based on the principle that different types of glass have different solar gain constants and solar radiation gained through the glass directly alters the cooling load. For the energy-efficient method, glass having the lowest gain is preferred which would reduce radiation gain. Solar gain of double glaze glass is almost half of the single glaze glass due to the air insulation. So, just by changing the glass type used in windows, a huge amount of air conditioning energy can be saved. Taking an air conditioning space, located in the Pulchowk Lalitpur, the total cooling load is calculated. It is calculated by simple CLTD method i.e., cooling load temperature difference method. For simplification, a commercial ASHRAE calculation sheet is used to calculate the value of CLTD. Further environmental conditions and correction coefficient are taken according to the latitude. To make the calculation more precise and efficient, calculations are done for June and July at 12 PM, 2 PM, and 4 PM. The maximum cooling load is recorded for June at 4 PM. Further, Calculations are completed by taking this peak value of the cooling load.