Design and Construction of a Ventilation System Located in an Experimental Chamber

Author(s):  
Eusébio Conceição ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Maria Inês Conceição ◽  
Hazim Awbi
2016 ◽  
Author(s):  
Rodrigo Abans ◽  
DOUGLAS GALANTE ◽  
IVAN G. PAULINO LIMA ◽  
FABIO RODRIGUES

Author(s):  
Kwangjin Shin ◽  
Hyunjae Park ◽  
Jongsoo Kim ◽  
Kyuil Kim

This paper presents mathematical and experimental models developed for the prediction of thermal interactions of an automobile passenger with the cabin environment and a ventilated seat. The mathematical model developed in this work employs existing and modified human-body heat balance equations along with variable thermo-physical environmental conditions. The model predicts steady-state and transient variations of passenger skin and seat-surface temperatures with time before and after activating the seat ventilation system for the given and selected cabin air conditions and heated seat temperature. In calculating the temperature changes with time after activating the ventilated-seat system, the modified heat balance equation along with the numerical analysis using the CFD package (Fluent, v.6) has been iteratively used, in which appropriate air-side average heat transfer coefficients were determined by using the Reynolds and Nusselt analogies for various system operating conditions. An experimental chamber was built to simulate the vehicle air and seat conditions attainable during a hot summer day. A selected number of individuals have participated in the experiments. Passengers' skin and seat-surface temperatures were measured with time after activating the ventilated-seat system for various chamber conditions. Investigation of the results obtained from the mathematical model and the experimental work showed that the seat ventilation system proposed in this work is able to provide the passenger thermal comfort initiation within about 2-3 minutes after activating the seat ventilation system. It was also found that the mathematical model developed in this work needs to be improved in order to include the non-uniform chamber air and seat conditions. The additional detailed experimental works are also required to quantify the passengers' thermal responses along with various chamber conditions.


Ports 2010 ◽  
2010 ◽  
Author(s):  
Viswanath K. Kumar ◽  
Carlos E. Ospina

Author(s):  
S. L. Yaron ◽  
J. Shimoni ◽  
C. Tzachar ◽  
D. Zwemmer

Author(s):  
Michele Aurelio ◽  
Stefania Cecchi ◽  
Mirca Montanari ◽  
Andrea Primavera

Taking into consideration the complexity of the new, heterogeneous, and different training needs currently present in the classrooms, the school is called to respond them in an effective and concrete way through inclusive educational approaches centered on the students, none excluded. On this basis, the authors, supporting the importance of technology in innovative teaching, propose the design and construction of an intelligent white stick through an inclusive cooperative methodology. The presented device, presented in this paper, is inspired by an open and collaborative teaching, enhancing a responsible digital education, accepting the training needs of all the students present in the classroom, specifically the blind student, and the recognition of the diversity in view of the reduction of disability.


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