Case Article—Louisiana Branch Lines

Louisiana Branch Lines is a struggling Southeast U.S. railroad in just four cities and 12 markets. Their marketing, operations, and finance performance is poor and their departments disjointed. In this customizable, nine-part case, instructors can choose to focus on basic problem structuring and descriptive and predictive statistics, optimization model building, simulation of solutions, or the integration of all of the above. It is based on a real-world case.

KONSEP PENCAHAYAAN ALAMI PADA DESAIN RUANG GALERI MENGGUNAKAN DIALUX EVO 9.2 (Studi Kasus: Desain Perancangan Gedung Pusat Pertunjukan Seni Dan Budaya di Taman Mini Indonesia Indah, Jakarta Timur)

The Gallery in the design of the Center for the Performing Arts and Culture has a function as an art exhibition using natural or artificial lighting by having standard of light intensity based on the Indonesian National Standard 03-6575-2001 Light Strength in the Gallery is 500 Lux and Greenship Rating Tools from Green Building Council Indonesia (GBCI), the minimum standard for natural lighting areas is 30% of the total area. The purpose of this research was to determine the design of the gallery according to the standards based on the simulation results using these standards as a reference for assessment identification. Writing with quantitative methods using DIALux Evo 9.2 software for building simulation by adjusting the coordinates of the building location, 3D building, and the effective hours from the sun source in the morning (06.00 WIB & 08.00 WIB), afternoon (12.00 WIB & 14.00 WIB), and evening (16.00 WIB). The simulation results contains lux calculations, lighting contours, and lighting distribution. Based on the analysis, the gallery has complied the standard of natural lighting needs around 08.00 WIB to 16.00 WIB and the distribution of lighting is 42-76% based on factors in the form of size, shape, dimensions of light openings, and building orientation. The results are used as the basis for the layout of the exhibition and artificial lighting points.Keyword: Gallery, Natural Lighting, DIALux Evo 9.2 Abstrak: Ruang Galeri pada desain Gedung Pusat Pertunjukan Seni dan Budaya memiliki fungsi sebagai ruang pameran karya seni dengan memanfaatkan pencahayaan alami ataupun buatan dengan standar kuat intensitas cahaya berdasarkan Standar Nasional Indonesia 03-6575-2001 Kuat Cahaya dalam Ruang Galeri yaitu 500 Lux dan Greenship Rating Tools dari Green Building Council Indonesia (GBCI) yaitu standar minimal untuk area pencahayaan alami adalah 30% dari total area. Tujuan penelitian ini untuk mengetahui desain ruang galeri sesuai standar berdasarkan hasil simulasi menggunakan standar tersebut sebagai acuan identifikasi penilaian. Penulisan dengan metode kuantitatif menggunakan perangkat lunak untuk simulasi bangunan yaitu DIALux Evo 9.2 dengan mengatur koordinat lokasi bangunan, 3D bangunan, dan jam efektif pencahayaan dari sumber matahari yaitu pagi hari (06.00 WIB & 08.00 WIB), siang hari (12.00 WIB & 14.00 WIB), dan sore hari (16.00 WIB). Data hasil simulasi berupa perhitungan lux, kontur penerangan, dan distribusi pencahayaan. Berdasarkan hasil analisis perangkat lunak, ruang galeri sudah memenuhi standar yaitu sekitar pukul 08.00 WIB hingga 16.00 WIB dan pesebaran pencahayaan 42-76% berdasarkan faktor ukuran, bentuk, dimensi bukaan cahaya pada ruangan, dan orientasi bangunan. Hasil analisis digunakan sebagai dasar tata letak pameran dan titik pencahayaan buatan.Kata Kunci: Ruang Galeri, Pencahayaan Alami, DIALux Evo 9.2

Semi-automatic geometry modelling: faster and streamlined building simulation models

The architecture, engineering, and construction (AEC) industry experiences a growing need for building performance simulations (BPS) as facilitators in the design process. However, inconsistent modelling practice and varying quality of export/import functions entail error-prone interoperability with IFC and gbXML data formats. Consequently, repeated manual modelling is still necessary. This paper presents a coupling module enabling a semi-automated extract of geometry data from the BIM software Revit and a further translation to a BPS input file using Revit Application Programming Interface (API) and visual programming in Dynamo. The module is tested with three test cases which shows promising results for fast and structured semi-automatic geometry modelling designed to fit today’s practice.

On the Benefits of Whole-building IAQ, Ventilation, Infiltration, and Energy Analysis Using Co-simulation between CONTAM and EnergyPlus

Publicly available tools to perform whole-building simulation of indoor air quality, ventilation, and energy have been available for several decades. Until recently, these tools were developed in isolation, such as the whole-building contaminant transport and airflow analysis tool, CONTAM, developed by the National Institute of Standards and Technology (NIST) and the whole-building energy analysis tool, EnergyPlus, developed by the U.S. Department of Energy (DOE). The ability to couple these tools during runtime has been implemented through co-simulation, enabling improved analysis of the interdependent effects of temperature and airflow on contaminant transport and energy use on a whole-building scale. This presentation will include the development of a set of coupled reference building models for the purposes of evaluating the potential benefits of using co-simulation between CONTAM and EnergyPlus. A set of Residential Prototype Building Models available from DOE has been modified by NIST and utilized to demonstrate the coupling process and the benefits of this coupling with respect to IAQ and energy analysis, and to evaluate multiple whole-building simulation methods related to infiltration, ventilation, and occupant exposure. These methods include an original EnergyPlus prototype model, the original model with NIST-based infiltration correlations, co-simulation between EnergyPlus and CONTAM, and stand-alone CONTAM simulations. Potential benefits will be explored related to the ability of co-simulation to address the effects of variations in building typology and ventilation system performance on contaminant transport results while leveraging the capabilities of whole-building energy analysis.