scholarly journals Service-Learning Case Study in Heat Transfer

Author(s):  
Nihad Dukhan ◽  
Mark R. Schumack ◽  
John J. Daniels ◽  
Michael G. Jenkins

This paper describes the implementation and the impact of a service-learning project in a heat transfer course for undergraduate engineering students. The students visited low-income households in the Detroit area and installed insulation materials on doors and windows thereby conserving energy and reducing heating costs during the cold months. The students collected information about the materials, dimensions, and relevant engineering parameters. They used the information to calculate the resulting dollar amount of energy savings. There were interactions with a university office in charge of assisting the faculty in using service learning by developing course-relevant community-service projects. There was collaboration with a nonprofit organization that promotes the development of resource efficient homes through training and technical assistance. Data were first gathered about the students’ awareness and attitudes regarding the relationship between engineering work and society. Students rated themselves in leadership attributes such as empathy, awareness, conceptualization, and the community, and also in social justice interests such as the dignity of the human person, the common good, rights, responsibilities and poverty. After conducting the project, they reflected on their experience. Analysis of the students’ responses clearly showed that they became more aware and perceptive of their role as engineers in a societal context.

2018 ◽  
Vol 59 ◽  
pp. 01009
Author(s):  
Ekadewi Anggraini Handoyo

Service learning is new for engineering students in PCU. When heat transfer class was adopting service learning methode last year, a small survey was done to know the students’ respond for this new methode. The survey was done via reflection they wrote in the end of the process. The students learn not only heat transfer itself, but they also learn how to apply it to an oven needed by a community in Kebontunggul, a small village in Mojokerto. The students in three groups visited the village, discussed with the villagers, and designed the oven used to dry crackers’ paste made from corn, cassava, and rice flour. Once the design was ready, the students went to workshop to manufacture the ovens. The oven was tested before sent to the village. They learned that it was difficult to make those cheap crackers. They learned a lot from the villagers in social interpersonal, social intrapersonal, emotional, and cognitive process. They are thankful to God for their being and grateful for this Service Learning class. A student even wrote, “I had changed motivation from just pursuing grade to seriously helping villagers”.


Author(s):  
Don R May

Experiential learning has become a common part of many engineering students undergraduate experience and is frequently accomplished using the service learning model. Intensive service learning for engineers is typically characterized by the type of “high risk” projects associated with developing world, humanitarian based service programs. In this research an expectancy-value theory model is used to evaluate student perceived value of service learning experiences. The model is applied to a case study where both engineering and non-engineering student participated in more than 25 projects over a 12 year period. Seventy-six percent of the respondents indicated that they most highly valued either the importance of the humanitarian mission or the impact of the experience on their perspective on life. Cost (monetary, time and effort) was ranked the least important factor. In all eight categories students rated the value (quality) of the experience higher than their expectation. Evidence suggests that, for engineering students, the value of the experience relative to their career should receive more emphasis and that professional role confidence may be an issue for female students. The results aid in assessing program efficacy and identifying areas where improvements can be achieved. 


2019 ◽  
Vol 366 (12) ◽  
Author(s):  
María Natalia Piol ◽  
Andrea Saralegui ◽  
Gabriela Orero ◽  
Susana Boeykens ◽  
Silvana Basack ◽  
...  

ABSTRACT The University of Buenos Aires (UBA) develops the UBANEX program, focused on service-learning projects for students involving social, environmental and public health concerns. One of the proposals was a collaborative project between UBA and the National University of General Sarmiento. Based on the hypothesis that students’ voluntary involvement in social concerns improves their attitudes towards themselves and learning, the aim was to focus on the development of social and professional skills by implementing an interdisciplinary work for water quality and supply assessment in low-income homes from a southern district of the Buenos Aires Metropolitan Area. Eighteen volunteers—Chemical and Civil Engineering students—were recruited during August–December 2016. Tasks were distributed according to their interests: survey making, sampling, lab analysis, infrastructure checking, etc. Volunteers were surveyed in social involvement, lab skills, data compilation and analysis, leading to a final report with recommendations for a proper water use. The survey results compiled their feedback: 72% admitted an update on water quality problems, 60% learned new lab techniques and were able to analyze results, 89% supported the University’s involvement in social concerns and 56% expanded their opinion about the professional field. The students confirmed their interest in participating in the next UBANEX project.


Buildings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 21 ◽  
Author(s):  
Khadija Jnat ◽  
Isam Shahrour ◽  
Ali Zaoui

Energy consumption in the social housing sector constitutes a major economic, social, and environmental issue, because in some countries such as France, social housing accounts for about 19% of the housing sector. In addition, this sector suffers from ageing, which results in high energy consumption, deterioration in the occupant quality of life, and high pressure on the budget of low-income occupants. The reduction of the energy consumption in this sector becomes a “must”. This reduction can be achieved through energy renovation and innovation in both energy management and occupant involvement by using smart technology. This paper presents a contribution to this goal through the investigation of the impact of smart monitoring on energy savings. The research is based on monitoring of comfort conditions in an occupied social housing residence in the North of France and the use of building thermal numerical modeling. Results of monitoring show that the indoor temperature largely exceeds the regulations requirements and the use of a smart system together with occupant involvement could lead to significant savings in heating energy consumption. The novelty in this paper concerns the use of comfort data from occupied social housing residence, occupation conditions, and building thermal modeling to estimate energy savings. The proposed methodology could be easily implemented to estimate heating energy savings in social housing buildings that lack individual energy consumption monitoring.


2016 ◽  
Vol 25 (4) ◽  
pp. 489-506
Author(s):  
Anne-Meike Fechter

Contemporary research on children affected by migration in Southeast Asia has examined the impact of mobility on their life chances, choices and overall welfare. Extending this concern, this article seeks to address these questions in the context of privileged migration. Specifically, it asks how the mobility of children whose parents work for aid agencies in low-income countries shapes the way they understand and negotiate experiences of privilege, as well as their everyday encounters with poverty. Based on ethnographic research with young people and their families in Cambodia, the findings suggest that parents and children may envisage their international mobility as a chance for personal growth, specifically as manifest in the form of ‘open-mindedness.’ Such positive discourses are complicated, however, by a simultaneously engendered sense of superiority toward those who are less mobile. They are also intertwined with practices of ‘bracketing’ possible frictions arising from their interactions with children of local elite members. While the young people’s proximity to poverty provides opportunities for locally-based service-learning activities, connections with their parents’ work can remain abstract. The article therefore suggests that this form of international mobility may not, in itself, enable a critical engagement with poverty or with their own and others’ privilege.


2015 ◽  
Vol 26 (6) ◽  
pp. 810-825 ◽  
Author(s):  
John Joachim Gelegenis ◽  
Douglas Harris ◽  
Danae Diakoulaki ◽  
Helen Lampropoulou ◽  
George Giannakidis

Purpose – The purpose of this paper is to investigate the reduction in efficiency of central heating systems of multi-family buildings when independent heating capability is offered to each apartment, to access the impact of the applied heating cost allocation (HCA) on this deterioration and suggest highly cost-effective ways (operation, control strategy, alternative HCA) of overcoming them at minimum cost. Design/methodology/approach – The paper reveals the problem of reduced efficiency in centrally heated multi-family dwellings through two case studies in real buildings, where data-loggers were installed and performance curve analysis was performed, in combination with detailed simulation. Findings – The paper finds that the enforcement of a suitable HCA regulation is a prerequisite to achieving energy savings in centrally heated multi-family dwellings. In addition the effects of dissimilarly heated apartments on the total energy demand and the significance of indirect heating and how these should be charged, are assessed. It is found that convenient operation of the central heating system may lead to high energy cost savings and higher efficiency at no cost. Research limitations/implications – HCA adopted more than three decades ago should be revised according to the present situation, namely, increasing fuel costs, existence of many low income families, energy poverty, availability of alternative (or supplementary) heating devices and better building envelopes. Practical implications – Occupants of multi-family dwellings should be appropriately educated and agree on rational use of the common heating system of the building. Originality/value – The paper identifies weak points of valid HCA regulation, reveals inefficiencies in centrally heated multi-family dwellings and measures the actual effectiveness of remedying measures. Detailed simulation contributes to the scientific documentation of the findings.


2014 ◽  
Vol 14 (2) ◽  
pp. 103-118
Author(s):  
Carla Corroto

Purpose – Taking Community Design Centers (CDC) in the USA as case studies, the purpose of this paper is to investigate the impact of a type of service learning increasingly found in colleges of architecture. Typically, the CDC is a model of architecture's civic engagement that makes claims to “give back” to under-served communities and enhance student learning with applied architectural design work. Design/methodology/approach – This project is part of a long-term engagement as participant observer and ethnographer in the field of architecture. Fieldwork in this investigation is presented as four case studies in separate and specific contexts. Findings – Initial findings suggest there are conflicting intentions and aspirations at work through service learning in architecture and its implementation calls into question who or what is served. The author argues architecture's epistemology, pedagogical structure, and ideology precludes effective civic engagement. Originality/value – The value of this research is the understanding of how those with power and resources are able to frame their work in low-income communities as service, even though there is little of worth given. It also demonstrates how stratification is reinforced through institutional arrangements in the USA.


Author(s):  
Lei Zhao ◽  
Ting Wang

Petroleum coke is processed into calcined coke in a rotary kiln, where the temperature profiles of flue gas and coke bed are highly nonuniform due to different flow and combustion mechanisms. Motivated by saving energy costs, the effect of refractory brick’s thermal properties on potential energy savings is investigated. This study focuses on investigating potential energy savings by replacing inner one third of existing bricks with higher thermal capacity (Cp) and/or higher thermal conductivity (k) bricks. This investigation is motivated by postulating that the bricks with higher thermal capacity can store more thermal energy during the period of contacting with the hot gas and release more heat to the cock bed when the bricks rotate to below and in contact with the coke bed. A rotational, transient marching conduction numerical simulation is conducted using the commercial software FLUENT. The impact of brick heat capacity and thermal conductivity on transporting thermal energy to the coke bed is analyzed. The results show: (a) Increasing the heat capacity of brick layer reduces brick temperature which helps increase the heat transfer between the hot gas and brick, in other words it does help brick store more heat from the hot gas, but, heat transfer between brick and coke is reduced, which is opposite to the original postulation. (b) Higher brick thermal conductivity decreases brick temperature thus increases heat transfer between hot gas and the brick layer. The heat transfer from brick to coke bed is also increased, but not significantly. (c) Usually a brick with a higher Cp value also has a higher k-value. Simulation of a brick layer with both four times higher Cp and k values actually show appreciable heat is transported from the brick to the coke bed for one rotation for both lower and higher Cp and k bricks. The difference is not significant.


Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3720
Author(s):  
António M. Raimundo ◽  
Nuno Baía Saraiva ◽  
Luisa Dias Pereira ◽  
Ana Cristina Rebelo

Glazed systems in buildings can account for a significant part of overall energy consumption. The unfavorable relationship between energy savings and the increased cost of energy-efficient windows is often the main drawback cited by customers to justify its non-acquisition. of glazed windows. This study addresses the relationship between the investment costs in windows and their energy performance and associated costs. Seventeen window manufacturers were contacted. This survey studied the state-of-the-art and the most-used windows in terms of energy efficiency and cost. Calumen and Guardian Configurator software were used to perform this assessment. Additionally, SEnergEd software was used to simulate the energy performance and compute the equivalent annual cost for the entire life cycle of buildings. Besides the economic benefits, the impact of the energy performance of the windows on the energy performance of the building was also studied. In terms of energy, the most efficient glazing system was two windows per span, resulting in a combined solar factor of 0.43 and a 0.55 W/(m2·K) heat-transfer coefficient. On the other hand, one window per span, with a solar factor of 0.79 and a 3.05 W/(m2 K) heat-transfer coefficient is the most cost-efficient to be used in Portugal.


Sign in / Sign up

Export Citation Format

Share Document