Green building is one of the concepts of the government sector and the construction-based professional sector in creating effective solutions to the reduced availability of natural energy, the negative impacts of climate, change, and the sick building syndrome.
According to Lili Kusumawati, who is a lecturer and researcher at Usakti Jakarta, one of the most important programs of the Green Building Council Indonesia-GBCI is to provide certificates and ratings to buildings in terms of their energy-efficient performance. Like other tropical countries, one of the important indicators used by GBCI in ranking energy-efficient performance is energy for cooling. GBCI assesses that by reducing the overall thermal transfer value (OTTV), the energy used for cooling can also be reduced. The overall thermal transfer value of the building envelope (OTTV) is an important aspect in creating a sustainable and energy-efficient architecture.
At the same time (beginning of designing), the architect/designer wants to know that the building he designed can be said to be efficient in using electrical energy as an aspect of green architecture. Architects usually need empirical formulas to determine. So, to bridge the problem of data limitations at the initial design stage, we need a way to be able to estimate/estimate the value of OTTV, so as not to hinder the work of architects/designers in designing sustainable architectural works, continued Lili in her online dissertation presentation on Tuesday ( 12/1) with the title “Model Rumus Praktis – Empiris Estimasi Nilai Perpindahan Termal Keseluruhan Pada Selubung Bangunan di Daerah Tropis”.
Furthermore, Promovenda said that the research will also introduce some simple equations that can be used as a rule of thumb or empirical formula which includes the solar factor (SF), the effective shading coefficient (SCeff) and OTTV as the rule of thumb. The research validation consists of the first validation and cross validation to determine the root mean square error (RMSE) and absolute percentage error (APE) between the practical formula and the OTTV equation from the Indonesian National Standard.
The success of the 2017 doctoral candidate research was then agreed upon through the graduation of the Examiner Team (Prof. Agung Wibowo, Prof. Erni Setyowati, Prof. Agus Budi Purnomo, Prof. Gagoek Hardiman, Prof. Wahyu Setiabudi and Dr. Eng. Sri Nastiti/External Examiner) who stated, Lili Kusumawati graduated as the 72nd doctoral doctorate in Architecture and Urban Sciences FT Undip with a 4.00 GPA.