Energy consumption for air conditioning systems (air conditioning system) increased along with the increasing need for fresh air and comfortable in the room especially apartments. FAC system (Floor Air Conditioning) is growing because it is more energy efficient than CAC (Ceiling Air Conditioning) system. However, the position of the AC supply is on the lower level at the FAC system causes draft discomfort becomes greater as air supply closer to the occupants so that thermal comfort can be reduced. Heat mixture of windows, exterior walls, kitchen, and occupants in the studio apartment affect thermal comfort in the room too.This study aims to determine the position of the AC supply which has the best thermal comfort of FAC system in the studio apartment. It can be done by analyzing ADPI (Air Diffusion Performance Index), the distribution of air temperature, wind speed, RH (Relative Humidity), and DR (Draft Risk) to change the position of the AC supply supported by CFD (Computational Fluid Dynamics) simulation.This result prove that AC position 2 (on wall near the kitchen) is more comfortable than AC position 1 (on the bathroom wall) because AC position 2 away from occupied areas, thereby reducing the occurrence of draught discomfort.

The issue of traffic jam in Indonesia’s big cities alike in Jakarta, Bandung, Medan, Makassar and Surabaya encourage the government, civilization and transportation expert initiate to consider a elucidation to solve the problematic above. The growing of the vehicle number which is extended faster than the establishment of road affect the bottleneck could not to be avoided. Furthermore the pollution problem which is produced by car exhaust where the number of them always increase each year make the air pollution in the settlement becomes crucial. Additionally within the backwards issue of the reducing of the using of fuel because of the source of them become limited. People have to consider sincerely before buying the vehicle due to the high operational cost. One of the solutions of the problem is the using of human power vehicle asThe study try to respond the need of people to enjoy the using of tandem bike but also still could be used as the single bike more over the storage problem is disappear. The research team agrees to give the name of this ‘novel bike’ as Trandem: the existing tandem bike which is transform to the dual function.

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Abstract. Vertical housing is recently popular in urban areas since the availability of land is very limited. A strong preference for living in the city is mainly due to the home to work travel that is relatively close for those who work in the city. While residing in the vertical housing (i.e. apartment) can be an advantage, several accommodation facilities are often provided at their minimum standards. As such, a special design of bicycle for apartment residents may an effective solution. Multi-function bike, ridden either by one or two riders and its aesthetic part of interior element can be an attractive offer. Identification of marketing objectives and observation of comparable products were a crucial step in the initial process of tandem bike design. The use of bicycle in urban areas can overcome a number of motorized vehicles operating wherever the using of them may create issues such as traffic jam and air pollution. This study aims to adjust the tandem bike which can be produced commercially for the apartment residents. Stated in the research problems, the design process was successfully fulfilled. Fabrication and product testing were positively completed. A concise and comfortable bike to carry from the lobby to the apartment unit, or vice versa, was successfully created.

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