scholarly journals Evaporative Mist Cooling as Heat Dissipation Technique: Experimental Assessment and Modelling

2020 ◽  
Vol 10 (17) ◽  
pp. 6026
Author(s):  
MCarmen Guerrero Delgado ◽  
José Sánchez Ramos ◽  
Servando Álvarez Domínguez ◽  
Francisco Toral Ulloa ◽  
José Antonio Tenorio Ríos

The severity of extreme weather conditions brought on by climate change are conditioning quality of life, economic development, and well-being in today’s cities. Conventional measures have been shown to be insufficient for tackling climate change and must be supplemented with ecofriendly approaches. Hence, the scientific community’s endeavor to develop natural cooling techniques that lower energy consumption while delivering satisfactory comfort levels. For its simplicity and low cost, evaporative cooling has gained in popularity in recent years. The substantial cooling power to be drawn from evaporative mist cooling, makes it an attractive alternative to conventional systems. Research conducted to date on the technique has focused on producing cold air, whilst cooling the water involved has been neither assessed nor experimentally validated. No readily applicable simplified model for the system able to use operating parameters as input variables has been defined either. The present study consequently aimed to experimentally assess the cooling power of the evaporation of sprayed water and experimentally validate a simplified model to assess and design such systems. The findings confirmed the cooling power of the technique, with declines in water temperature of up to 6 °C, and with it the promise afforded by this natural air conditioning method. Finally, simplified model developed allows to evaluate this technique like a conventional system for producing fresh water.

2021 ◽  
Vol 95 ◽  
pp. 01010
Author(s):  
Mihaela Cristina Drăgoi ◽  
Irina Gabriela Rădulescu

Climate change and economic development have both an increasing impact on human health and on the quality of life. The reverse assumption is also true, since, for improving economic and social development and well-being, the human activity is affecting the environment. This paper presents some of the alarm signals of various international institutions and entities regarding several challenges the current modern society is facing: climate change, disruptive weather events, food safety implications, health related issues, economic losses. Based on previous studies which demonstrated a direct connection between climate changes and weather conditions and the outbreak of infectious diseases and threats for the food safety chain, the main research objective is to determine whether this hypothesis is also valid in the case of Romania. Thus, the conducted analysis takes into consideration variations of temperature and precipitation in relation to new cases of food-borne diseases in order to determine if this connection is statistically significant as it was in other regions of Europe and of the world previously examined by scholars.


Author(s):  
Katherine Bishop-Williams ◽  
Lea Berrang-Ford ◽  
Jan Sargeant ◽  
David Pearl ◽  
Shuaib Lwasa ◽  
...  

Background: Season and weather are associated with many health outcomes, which can influence hospital admission rates. We examined associations between hospital admissions (all diagnoses) and local meteorological parameters in Southwestern Uganda, with the aim of supporting hospital planning and preparedness in the context of climate change. Methods: Hospital admissions data and meteorological data were collected from Bwindi Community Hospital and a satellite database of weather conditions, respectively (2011 to 2014). Descriptive statistics were used to describe admission patterns. A mixed-effects Poisson regression model was fitted to investigate associations between hospital admissions and season, precipitation, and temperature. Results: Admission counts were highest for acute respiratory infections, malaria, and acute gastrointestinal illness, which are climate-sensitive diseases. Hospital admissions were 1.16 (95% CI: 1.04, 1.31; p = 0.008) times higher during extreme high temperatures (i.e., >95th percentile) on the day of admission. Hospital admissions association with season depended on year; admissions were higher in the dry season than the rainy season every year, except for 2014. Discussion: Effective adaptation strategy characteristics include being low-cost and quick and practical to implement at local scales. Herein, we illustrate how analyzing hospital data alongside meteorological parameters may inform climate-health planning in low-resource contexts.


2020 ◽  
Vol 4 (1) ◽  
pp. 129-139
Author(s):  
Naresh Bhakta Adhikari

The paper mainly analyses the environmental threats focusing on climate change to human security in Nepal. Major aspects of human security are interlinked and interconnected in our context. Among them, human security offers much to the vibrant field of environmental security in Nepal. Environmental threats are linked to the overall impact on human survival, well-being, and productivity. A great deal of human security is tied to peoples’ access to natural resources and vulnerabilities to environmental change. The major environmental threats in our context is the climate change which have widespread implications for Nepal, causing impacts to water availability, agricultural production, forestry, among many other detrimental effects. The critical threat of environmental security needs to be taken into serious consideration to save our succeeding generation. This article primarily interpreted the government action towards emerging environmental threat based on realist approach. For the study of theme of this article, descriptive and analytical research has been used to draw present major environmental threats in Nepal. With consideration to factors, this article attempted to identify the major environmentally vulnerable areas that are likely to hamper the overall status of human security in Nepal. This paper also tried to suggest the measures to enhance the environmental security considering prospects and policy focusing on Nepalese diverse aspects.


2019 ◽  
Author(s):  
Nikki Theofanopoulou ◽  
Katherine Isbister ◽  
Julian Edbrooke-Childs ◽  
Petr Slovák

BACKGROUND A common challenge within psychiatry and prevention science more broadly is the lack of effective, engaging, and scale-able mechanisms to deliver psycho-social interventions for children, especially beyond in-person therapeutic or school-based contexts. Although digital technology has the potential to address these issues, existing research on technology-enabled interventions for families remains limited. OBJECTIVE The aim of this pilot study was to examine the feasibility of in-situ deployments of a low-cost, bespoke prototype, which has been designed to support children’s in-the-moment emotion regulation efforts. This prototype instantiates a novel intervention model that aims to address the existing limitations by delivering the intervention through an interactive object (a ‘smart toy’) sent home with the child, without any prior training necessary for either the child or their carer. This pilot study examined (i) engagement and acceptability of the device in the homes during 1 week deployments; and (ii) qualitative indicators of emotion regulation effects, as reported by parents and children. METHODS In this qualitative study, ten families (altogether 11 children aged 6-10 years) were recruited from three under-privileged communities in the UK. The RA visited participants in their homes to give children the ‘smart toy’ and conduct a semi-structured interview with at least one parent from each family. Children were given the prototype, a discovery book, and a simple digital camera to keep at home for 7-8 days, after which we interviewed each child and their parent about their experience. Thematic analysis guided the identification and organisation of common themes and patterns across the dataset. In addition, the prototypes automatically logged every interaction with the toy throughout the week-long deployments. RESULTS Across all 10 families, parents and children reported that the ‘smart toy’ was incorporated into children’s emotion regulation practices and engaged with naturally in moments children wanted to relax or calm down. Data suggests that children interacted with the toy throughout the duration of the deployment, found the experience enjoyable, and all requested to keep the toy longer. Child emotional connection to the toy—caring for its ‘well-being’—appears to have driven this strong engagement. Parents reported satisfaction with and acceptability of the toy. CONCLUSIONS This is the first known study investigation of the use of object-enabled intervention delivery to support emotion regulation in-situ. The strong engagement and qualitative indications of effects are promising – children were able to use the prototype without any training and incorporated it into their emotion regulation practices during daily challenges. Future work is needed to extend this indicative data with efficacy studies examining the psychological efficacy of the proposed intervention. More broadly, our findings suggest the potential of a technology-enabled shift in how prevention interventions are designed and delivered: empowering children and parents through ‘child-led, situated interventions’, where participants learn through actionable support directly within family life, as opposed to didactic in-person workshops and a subsequent skills application.


Author(s):  
Jennifer Fay

Much of Buster Keaton’s slapstick comedy revolves around his elaborate outdoor sets and the crafty weather design that destroys them. In contrast to D. W. Griffith, who insisted on filming in naturally occurring weather, and the Hollywood norm of fabricating weather in the controlled space of the studio, Keaton opted to simulate weather on location. His elaborately choreographed gags with their storm surges and collapsing buildings required precise control of manufactured rain and wind, along with detailed knowledge of the weather conditions and climatological norms on site. Steamboat Bill, Jr. (1928) is one of many examples of Keaton’s weather design in which characters find themselves victims of elements that are clearly produced by the off-screen director. Keaton’s weather design finds parallels in World War I strategies of creating microclimates of death (using poison gas) as theorized by Peter Sloterdijk.


Climate change is a profoundly social and political challenge with many social justice concerns around every corner. A global issue, climate change threatens the well-being, livelihood, and survival of people in communities worldwide. Often, those who have contributed least to climate change are the most likely to suffer from its negative consequences and are often excluded from the policy discussions and decisions that affect their lives. This book pays particular attention to the social dimensions of climate change. It examines closely people’s lived experience, climate-related injustice and inequity, why some groups are more vulnerable than others, and what can be done about it—especially through greater community inclusion in policy change. A highlight of the book is its diversity of rich, community-based examples from throughout the Global South and North. Sacrificial flood zones in urban Argentina, forced relocation of United Houma tribal members in the United States, and gendered water insecurities in Bangladesh and Australia are just some of the in-depth cases included in the book. Throughout, the book asks social and political questions about climate change. Of key importance, it asks what can be done about the unequal consequences of climate change by questioning and transforming social institutions and arrangements—guided by values that prioritize the experience of affected groups and the inclusion of diverse voices and communities in the policy process.


2021 ◽  
pp. 108602662110316
Author(s):  
Tiziana Russo-Spena ◽  
Nadia Di Paola ◽  
Aidan O’Driscoll

An effective climate change action involves the critical role that companies must play in assuring the long-term human and social well-being of future generations. In our study, we offer a more holistic, inclusive, both–and approach to the challenge of environmental innovation (EI) that uses a novel methodology to identify relevant configurations for firms engaging in a superior EI strategy. A conceptual framework is proposed that identifies six sets of driving characteristics of EI and two sets of beneficial outcomes, all inherently tensional. Our analysis utilizes a complementary rather than an oppositional point of view. A data set of 65 companies in the ICT value chain is analyzed via fuzzy-set comparative analysis (fsQCA) and a post-QCA procedure. The results reveal that achieving a superior EI strategy is possible in several scenarios. Specifically, after close examination, two main configuration groups emerge, referred to as technological environmental innovators and organizational environmental innovators.


2021 ◽  
Vol 11 (9) ◽  
pp. 3972
Author(s):  
Azin Velashjerdi Farahani ◽  
Juha Jokisalo ◽  
Natalia Korhonen ◽  
Kirsti Jylhä ◽  
Kimmo Ruosteenoja ◽  
...  

The global average air temperature is increasing as a manifestation of climate change and more intense and frequent heatwaves are expected to be associated with this rise worldwide, including northern Europe. Summertime indoor conditions in residential buildings and the health of occupants are influenced by climate change, particularly if no mechanical cooling is used. The energy use of buildings contributes to climate change through greenhouse gas emissions. It is, therefore, necessary to analyze the effects of climate change on the overheating risk and energy demand of residential buildings and to assess the efficiency of various measures to alleviate the overheating. In this study, simulations of dynamic energy and indoor conditions in a new and an old apartment building are performed using two climate scenarios for southern Finland, one for average and the other for extreme weather conditions in 2050. The evaluated measures against overheating included orientations, blinds, site shading, window properties, openable windows, the split cooling unit, and the ventilation cooling and ventilation boost. In both buildings, the overheating risk is high in the current and projected future average climate and, in particular, during exceptionally hot summers. The indoor conditions are occasionally even injurious for the health of occupants. The openable windows and ventilation cooling with ventilation boost were effective in improving the indoor conditions, during both current and future average and extreme weather conditions. However, the split cooling unit installed in the living room was the only studied solution able to completely prevent overheating in all the spaces with a fairly small amount of extra energy usage.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Arthur Holtzclaw ◽  
Jack Ellis ◽  
Christopher Colombo

Abstract Background Almost half of trainees experience burnout during their career. Despite the Accreditation Council on Graduate Medical Education (ACGME) recommendation that training programs enact well-being curricula, there is no proven method of addressing this difficult topic. Methods We created a curriculum addressing physician resiliency and well-being, designed for an Internal Medicine Residency Program. This curriculum utilized episodes from a medical television series, Scrubs, to facilitate a monthly, 1-h faculty guided discussion group. We collected informal feedback and abbreviated Maslach Burnout Inventories (aMBI) monthly and conducted a formal focus group after 6 months to gauge its effectiveness. Results The curriculum was successfully conducted for 12 months with each session averaging 18–20 residents. Residents reported high satisfaction, stating it was more enjoyable and helpful than traditional resiliency training. 19 of 24 residents (79 %) completed a baseline aMBI, and 17 of 20 residents (85 %) who attended the most recent session completed the 6-month follow-up, showing a non-significant 1-point improvement in all subsets of the aMBI. Conclusions This novel, low-cost, easily implemented curriculum addressed resiliency and burn-out in an Internal Medicine Residency. It was extremely well received and can easily be expanded to other training programs or to providers outside of training.


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