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Dave Mangindaan
Bina Nusantara University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Industrial & Manufacturing Engineering Mathematics

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Perancangan Sistem Tata Udara Ditinjau dari Aspek Energi dan Biaya pada Bangunan Hotel di Semarang Agus Marjianto; Dave Mangindaan
Engineering, MAthematics and Computer Science (EMACS) Journal Vol. 2 No. 3 (2020): EMACS
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/emacsjournal.v2i3.6594

Abstract

[Design of air conditioning system based on the energy and costs aspect of  hotel buildings in Semarang] Indonesia’s economic growth has been above 5% for the past few years. Tourism industry is one of the sectors that shows a significant progress. The improvement in tourism industry has to be supported with good hospitality industry as well. Air conditioning system is one of the main utilities in a hotel building. The design of the air conditioning system for a hotel building must pay close attention to the thermal comfort factor for the guests, safety factor, and energy and cost efficiency aspect of it. Air conditioning system design consists of cooling load calculation for the hotel, air conditioning system selection, energy and cost calculation using the life cycle cost analysis. The maximum cooling load in this hotel is 3.279 kW. From that cooling load, three alternative systems are being considered, which are the central air conditioning system using chiller machine that has constant flowrate, the central air conditioning system using chiller machine that has variable flowrate, and the split air conditioning system using VRF machine. Energy analysis and life cycle cost analysis for 20 years was performed to be able to decide the best system. From that energy and cost analysis it can be concluded that the second alternative, which is three units of chiller with variable discharge with a capacity of 1,100 kW for each chiller, is the best system for the hotel. This system has an energy consumption intensity value of 118 kWh/m2 per year and total cost of Rp. 87,707,416,390  for a period of 20 years.
Permodelan Materi Pengajaran Mata Kuliah Ergonomi pada Program Product Design Engineering Erwin Rezasyah; Reiko Sarah Pradita; Maria Annissa Laetitia Vheran Loekitodisastro; Calista Angeline; Dave Mangindaan
Engineering, MAthematics and Computer Science (EMACS) Journal Vol. 2 No. 3 (2020): EMACS
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/emacsjournal.v2i3.6598

Abstract

The subject of Ergonomics serves as an important part on the education for Product Design Engineering, in which it sets the fundamental understanding for future engineers over the human aspect in engineered a new product. The teaching method of Ergonomics using theoretical approach, followed by laboratory practice to simulate the approach on improving a product or system from the human point of view as user. However, in the context of Product Design Engineering that seeks an output in form of a product solution the approach used in Ergonomics teaching may not be reaching the level of prototyping that can represent a tangible solution. This paper is discussing an alternate approach of applying Project-based model for teaching Ergonomics with aim to produce an output of conceptual product to materialize the Ergonomics improvement parameters resulted from the theoretical and laboratory practice approach initially conducted from the previous approach. The adoption of Design Thinking method into the teaching plan was being introduced as a mean of allowing a direct and practical way of leading the process up to prototyping phase and thus setting up a platform for further improvement. The case study was deducted from the teaching subject of Human-Integrated Systems class by utilizing the ongoing teaching plan as the media for introducing the new approach.
Co-Authors Agus Marjianto Calista Angeline Erwin Rezasyah Maria Annissa Laetitia Vheran Loekitodisastro Reiko Sarah Pradita