Hygrothermal Loads of Building Components in Bathroom of Dwellings

2014 ◽  
Vol 1041 ◽  
pp. 269-272
Author(s):  
Richard Slávik ◽  
Miroslav Čekon
Keyword(s):  
Point Of View ◽  
Indoor Temperature ◽  
Technical Standards ◽  
Hygrothermal Behavior ◽  
Calculation Results ◽  
Humidity Measurements ◽  
Building Components ◽  
Building Component ◽  
Building Physics

The paper presents an analysis of indoor temperature and relative humidity measurements in dwelling's bathroom. Obtained data are compared with those defined in technical standards and applied for assessment of building component from building physics point of view. These parameters are used for boundary condition at the evaluation level of building components and their values have significant influence on hygrothermal assessment. The example of building's component demonstrates analysis magnitude of differences between the calculation results applying standardized boundaries condition and monitored data based on in-situ measurements. Temperature and humidity measurements are applied for prediction of hygrothermal behavior of building’s component by HAM algorithm. Finally, results from analysis presents the penetration depth of moisture increasing at surface caused by moisture peaks in internal environment of bathroom.

In situ TEM studies of irradiation effects for materials improvement

1991 ◽  
Vol 49 ◽  
pp. 452-453
Author(s):  
Charles W. Allen
Keyword(s):  
Nuclear Reactor ◽  
Austenitic Stainless Steels ◽  
High Energy ◽  
Point Of View ◽  
In Situ Tem ◽  
Irradiation Effects ◽  
Tem Analysis ◽  
Radiation Induced ◽  
Analytical Tools

Irradiation effects studies employing TEMs as analytical tools have been conducted for almost as many years as materials people have done TEM, motivated largely by materials needs for nuclear reactor development. Such studies have focussed on the behavior both of nuclear fuels and of materials for other reactor components which are subjected to radiation-induced degradation. Especially in the 1950s and 60s, post-irradiation TEM analysis may have been coupled to in situ (in reactor or in pile) experiments (e.g., irradiation-induced creep experiments of austenitic stainless steels). Although necessary from a technological point of view, such experiments are difficult to instrument (measure strain dynamically, e.g.) and control (temperature, e.g.) and require months or even years to perform in a nuclear reactor or in a spallation neutron source. Consequently, methods were sought for simulation of neutroninduced radiation damage of materials, the simulations employing other forms of radiation; in the case of metals and alloys, high energy electrons and high energy ions.

Implantação do aterro sanitário no município de Marituba-PA e os efeitos sobre as comunidades do entorno

2020 ◽  
Author(s):  
Moisés Rita Vasconcelos Júnior
Keyword(s):  
Solid Waste ◽  
Environmental Impacts ◽  
Urban Policy ◽  
National Policy ◽  
Policy Instruments ◽  
Social Impacts ◽  
Point Of View ◽  
Metropolitan Region ◽  
Technical Standards ◽  
Non Governmental Organizations

The municipality of Marituba, Metropolitan Region of Belém - RMB, has suffered environmental impacts due to irregularities in the landfill operation implemented in 2015, which triggered social impacts perceived by all the population, including neighboring municipalities, such as Ananindeua and Belém Protests were carried out by the Movement Outside the Garbage that is constituted by the dwellings of the surrounding neighborhoods to the place where the embankment is located, of owners of commercial activities linked to the tourism and Non Governmental Organizations that interrupted several times the transit of the main route that interconnects the seven municipalities of the RMB and the entrance of the embankment, in order to draw the attention of the municipal public power to the problems that the population would have been facing ever since. From this, the following questions arose: What social impacts would people be making in these protests? Would such problems be directly related to the activities carried out in the landfill? And finally, what are the actions of the public authority and the company that manages the enterprise in the management of these social impacts? The relevance of this study concerns not only the identification of social impacts considering the fragility of this approach in the Environmental Impact Studies and concomitantly in the Reports of Environmental Impacts, but also, from the point of view of the debate about the licensing process of enterprises of this nature and employment and the need for the joint use of environmental and urban policy instruments, considering that RMB municipalities have not yet used sustainable alternatives for the reduction of solid waste produced in their territories, as well as the reduction of environmental impacts caused by dumps , and in the case of Marituba, of the landfill that operates outside the standards established by the Brazilian Association of Technical Standards - ABNT, which is responsible for the management and treatment of solid waste and the National Policy on Solid Waste - PNRSN.

Obtainable Method of Measuring the Solar Radiant Flux Based on Silicone Photodiode Element

2016 ◽  
Vol 824 ◽  
pp. 477-484 ◽  
Author(s):  
Miroslav Čekon ◽  
Richard Slávik ◽  
Peter Juras
Keyword(s):  
Solar Radiation ◽  
Solar Irradiance ◽  
Climate Science ◽  
Radiant Flux ◽  
Silicon Photodiode ◽  
Building Science ◽  
Solar Instruments ◽  
Solar Radiation Exposure ◽  
Building Physics

Solar radiation exposure and its monitoring does have not only the importance for climate science and meteorology however is equally of highly relevant use for the field of Building Science as primarily those of analyzing thermal aspects in building physics. Here the measuring of solar irradiance by means of well-established solar instruments can be applied whose advances have been undergoing steep progress. Currently, a silicon photodiode element, as a truly obtainable form, may have a feasible exploitation in the field of building applications concerning the solar radiant flux quantifying. It represents a small optoelectronic element and has a several exploitable advantages. The paper presents a perspective alternative to monitor solar irradiance. Own measurement assembly is proposed and introduced. Initial in-situ measurements are performed and final comparability with existing commercial solar instruments is presented. An obtained correlation with existing types demonstrates its applicability to the field of building science and solar energy.

scholarly journals Astrobiological Field Campaign to a Volcanosedimentary Mars Analogue Methane Producing Subsurface Protected Ecosystem: Imuruk Lake (Alaska)

2011 ◽  
Vol 2011 ◽  
pp. 1-8
Author(s):  
F. Gómez ◽  
O. Prieto-Ballesteros ◽  
D. Fernández-Remolar ◽  
J. A. Rodríguez-Manfredi ◽  
M. Fernández-Sampedro ◽  
...  
Keyword(s):  
Molecular Ecology ◽  
Point Of View ◽  
Land Bridge ◽  
High Hydrogen ◽  
Adverse Conditions ◽  
Life On Mars ◽  
Life Detection ◽  
National Preserve ◽  
Mars Exploration Rovers

Viking missions reported adverse conditions for life in Mars surface. High hydrogen signal obtained by Mars orbiters has increased the interest in subsurface prospection as putative protected Mars environment with life potential. Permafrost has attracted considerable interest from an astrobiological point of view due to the recently reported results from the Mars exploration rovers. Considerable studies have been developed on extreme ecosystems and permafrost in particular, to evaluate the possibility of life on Mars and to test specific automated life detection instruments for space missions. The biodiversity of permafrost located on the Bering Land Bridge National Preserve has been studied as an example of subsurface protected niche of astrobiological interest. Different conventional (enrichment and isolation) and molecular ecology techniques (cloning, fluorescence“in situ”probe hybridization, FISH) have been used for isolation and bacterial identification.

Demolition Versus Deconstruction: Impacts of Fenestration Disposal in Building Renovation Projects

2014 ◽  
Vol 39 (1) ◽  
pp. 48-55
Author(s):  
Soofia Tahira Elias-Ozkan
Keyword(s):  
Comparative Study ◽  
Construction Materials ◽  
Resource Conservation ◽  
Point Of View ◽  
Similar Construction ◽  
Building Components ◽  
Material Energy

This paper presents findings of a comparative study on the removal and disposal of fenestration units in two separate buildings, belonging to the same period and built with similar construction materials. Demolition techniques were used for removing the fenestration units from a building that was undergoing refurbishment; while, deconstruction techniques were used for dismantling similar units from another building that was being selectively demolished. It was concluded that the amount of energy consumed, time taken and waste generated, were far greater, and the revenues much lower, when conventional demolition techniques and tools were used. Hence, from the point of view of resource conservation (material, energy, time, and money) deconstruction was found to be more advantageous in the disposal of reusable building components.

Ship Drag Reduction by Microalgal Biopolymers: A Feasibility Analysis

2007 ◽  
Vol 51 (04) ◽  
pp. 326-337
Author(s):  
K. Gasljevic ◽  
E. F. Matthys
Keyword(s):  
Drag Reduction ◽  
Consumption Rate ◽  
Synthetic Polymers ◽  
Point Of View ◽  
Technical Issues ◽  
Fuel Costs ◽  
Propulsion Power ◽  
Ship Speed ◽  
In Situ Production

We have investigated the feasibility of using high-molecular-weight polysaccharides produced by marine microalgae to reduce the drag on ships and therefore to be able to reduce the needed propulsion power and fuel costs or, alternatively, to increase the ship speed. Experimental and analytical studies were used to answer four critical questions:How suitable are the biopolymers for drag reduction on ships?What is the needed polymer consumption rate at a given level of drag reduction?What is the achievable polymer production rate that can be achieved by the microalgae?What are possible modes of implementation of the proposed technology? It is seen that in situ production of biopolymers by microalgae growing on the hull may be a possible approach to polymeric ship drag reduction. Production of biopolysaccharide off the ship and even harvesting it from the ocean are other possibilities. The use of biopolymers is naturally advantageous from an environmental point of view as well. Some comparison of biopolymers and synthetic polymers is also presented. Several technical issues remain to be investigated, but the information available suggests that biopolymers may be the best additives for drag reduction on ships.

Polyculture de tilapia et Clarias en etang dans la commune de Pobè, sud-est du Benin.

2020 ◽  
Author(s):  
Kochikpa Ondodje
Keyword(s):  
Rural Areas ◽  
Eating Habits ◽  
National Level ◽  
Wholesale Price ◽  
Point Of View ◽  
Fish Farms ◽  
Technical Standards ◽  
Pipe System ◽  
The Many ◽  
Modern Breeding

Abstract The SARL "Pobè Fish Farm" located in the South-East of Benin specializes in the production and sale of tilapia and Clarias. The farm has twenty two ponds of 200 m2 (10 m × 20 m) supplied with water by a pipe system from a natural and permanent stream. The water supply is via a concrete channel which did not allow the water to be renewed once the pond is full. Work has been carried out to allow a larger inflow of water and communication between the ponds. The operation of the farm is modeled on the types of agro-fish farms existing in Asia and encountered in Vietnam in particular; it aims to put theoretical knowledge into practice and on the other hand to contribute to the development of a sector still little known in Benin, despite the many hydroagricultural potentials with which this country is endowed. The species bred at national level are rustic and adapted to the environment and whose genetic performance has not been improved. In fact, only modern breeding following very precise technical standards can allow obtaining interesting results from the point of view of agronomic yield and financial profitability. Indeed, these fish from our ponds are very popular with the populations (the average wholesale price is 1000 FCFA/kg) and are already an integral part of eating habits both in rural areas and in cities.

In Situ Humidity Measurements at the CL Surface By MEMS-Based Sensors

2015 ◽  
Vol 69 (17) ◽  
pp. 471-476
Author(s):  
J. Tsujikawa ◽  
R. Minami ◽  
T. Araki
Keyword(s):  
Humidity Measurements

Emissions and Noise Pollution Diagnosis of a Turbogas Power Plant During Commissioning Service

2010 ◽  
Author(s):  
Norberto Pe´rez Rodri´guez ◽  
Erik Rosado Tamariz ◽  
Rafael Garci´a Illescas
Keyword(s):  
Power Plant ◽  
Cooling System ◽  
Near Field ◽  
Noise Pollution ◽  
Point Of View ◽  
International Standards ◽  
Partial Load ◽  
The City ◽  
Permissible Deviation

This work is focused on the diagnosis of behavior, from the point of view of control emissions and noise level, of a power Turbogas plant during the process of commissioning, to guarantee that its operation complies with national and international standards. The environmental diagnosis of the power plant was developed as part of the performance evaluation of the unit. The conditions of the unit evaluation include operation at base load and partial load, as well as time periods for load changes. The evaluated power plant consists of an aeroderivative gas turbine installed in a simple cycle, operating with a cooling system (chiller) installed in the urban zone of Mexico City. Therefore, it should comply with the legislation and regulations of the city concerning air pollution and allowed noise, besides the international standards established by the manufacturer. The study includes emissions measurements using a Continuous Emissions Monitoring System installed in-situ, previously calibrated and checked during and after the test which was found inside the permissible deviation of 3%. Measurements were recorded at intervals of 5 minutes during test periods of 110 minutes for each load and 45 minutes for load changes. On the other hand, noise pressure evaluation was carried out in near field as well as far field produced by the power plant during operation. Measurements were carried out by using precision instruments installed specifically for it. A temporary system for obtaining data was used to monitoring the environmental conditions every 30 seconds. It was possible to verify that the turbogenerator complies with all noise levels and contaminant emissions requirements and regulations according to the limits established by the manufacturer and national and international standards.

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