Abstract
The growing energy consumption of the building sector is becoming a current issue affecting both environmental and economical fields. The present paper investigates thermal comfort conditions inside the manuscript room of the National library of Tunisia by using an IoT based smart measuring system. The tracked parameters are temperature and relative humidity. These parameters are considered as the fundamental factors influencing thermal comfort inside a building. The results of this survey performed during the month of January 2019 lead us to propose an energy optimization measure, in order to update heating system electricity consumption. The proposed approach consists of the use of phase change materials (PCM) window shutters. PCM window shutters can act as thermal regulators thanks to their melting solidification process. The results of the proposed solution showed that adopting PCM window shutters for the examined test room can save up to 10% for the first phase change material and 15% for the second phase change material of the total energy used by the heat pump unit to maintain the inside air temperature at 21°C.
Highlights
In recent years, energy consumption growth of the building sector has become an issue concerning both developed and less developed countries
Our current study investigated the energetic contribution of phase change materials incorporated into window shutters in terms of reducing the power consumption of the heating system
The results of this survey conducted during January 2019, showed that the heating system used in the room stabilizes Tin at 21°C after three hours of constant functioning, regardless of the outside air temperature degree
Summary
Energy consumption growth of the building sector has become an issue concerning both developed and less developed countries. This high dependency on HVAC systems to maintain thermal comfort conditions inside a building is a basic cause of increasing buildings' energy consumption and elevating green gashouse emissions in the atmosphere. Minimizing the reliance on such systems in order to maintain optimal thermal comfort conditions will directly reduce commercial building electricity consumption.
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