Comfort´s evolution analysis of low-cost housing in Ciudad Valles, S.L.P.

This research is the product of the monitoring carried out from year 2019 to 2020 about the environmental parameters that determine the person´s comfort in six low-cost housing in Ciudad Valles, San Luis Potosí, México. These buildings were built in 1985, 1987, 1990, 1997, 2006 and 2008 respectively, between 1972 to 2006, foundation of INFONAVIT and CONAVI respectively, period of interest to analyze the thermal behavior of materials as block and concrete, which transcend the time due to their industrialization characteristics rather than their benefits in the person´s termal confort. The main objective is analyzes and demonstrate the thermal confort evolution provided by these classic materials in the hygrothermal environment, in order to suggest adjustments to improve it. the research questions are next; Do the classic materials provide a comfortable environment? How is the evolution of thermal comfort in the interior of the low-cost housing when building them with cement block and concrete? And if not; What are the recommendations to generate a better thermal environment? With the support of the PRODEP 2018 Program, some measuring equipment is obtained that are used to record the relative humidity, temperature, wind speed and temperature of the materials like the floor, the roof and the walls.

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The Numerical Simulation of Thermal Environment of Strawberry Greenhouse in Natural Ventilation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.501-504.2276 ◽

2014 ◽

Vol 501-504 ◽

pp. 2276-2281 ◽

Cited By ~ 2

Author(s):

Wei Hong Fu ◽

Shi Jun You

Keyword(s):

Numerical Simulation ◽

Wind Speed ◽

Air Temperature ◽

Natural Ventilation ◽

Thermal Environment ◽

Environmental Parameters ◽

Outdoor Air ◽

Air Velocity ◽

Indoor Thermal Environment ◽

Average Temperature

The method of numerical simulation was adopted in this study to explore the size of the natural ventilation inlet opening, outdoor temperature and ambient wind speed and other environmental parameters to effect of the varied rules of thermal environment of the strawberry solar greenhouse. The variation of outdoor air temperature effected greatly to the indoor thermal environment, the average air velocity in the strawberry growing zoon within the greenhouse was rose initially and dropped tend to the steady with increasing outdoor air temperature. The average temperature in the strawberry growing zoon was decreased with increasing the outside wind speed. The average air velocity was increased gradually in the strawberry growing zoon within the greenhouse with increasing outdoor wind speed. The average velocity was reduced gradually toward to constant.

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An Investigation on the Thermal Environment of Residential Courtyards in the Cold Area of Western Sichuan Plateau

Buildings ◽

10.3390/buildings12010049 ◽

2022 ◽

Vol 12 (1) ◽

pp. 49

Author(s):

Sheng Xu ◽

Bin Cheng ◽

Zefeng Huang ◽

Chenyang Shen

Keyword(s):

Wind Speed ◽

Solar Radiation ◽

Correlation Analysis ◽

Thermal Environment ◽

Environmental Parameters ◽

Research Area ◽

Scientific Basis ◽

Tibet Plateau ◽

Western Sichuan ◽

Environment Parameters

Located on the east side of China’s Qinghai–Tibet Plateau is the Western Sichuan Plateau, the courtyard adopts a passive design to withstand the harsh climate in cold areas, and its internal thermal environment has a direct impact on the productivity and activities of the residents. This paper takes a plateau village (3500 m above sea level) beside the Sichuan–Tibet line as the research area, and selects four typical local courtyard layouts and an outdoor reference point for the measurement and comparison of the thermal environment. By comparing the measured parameters inside and outside the courtyard, and the correlation analysis, it was deduced as follows. (1) In the cold winter, traditional plateau residential courtyards can create a stable internal micro-climate, but the cold resistance of the courtyards is closely related to its layout. (2) Except for wind speed, other thermal environment parameters of the courtyard are all affected by solar radiation (3) The correlation analysis of the various environmental parameters and physiologically equivalent temperature (PET) showed that the correlation coefficient between the mean radiation temperature (Tmrt) and all courtyard PET values is <0.0001, showing a significant correlation. The indicators of mean temperature radiation are mainly affected by the temperature and the wind speed; furthermore, the temperature and solar radiation are positively correlated, which confirms that the solar radiation and wind speed within the courtyard are the main factors affecting the internal thermal environment in the courtyard. (4) Feedback the courtyard layout problems through the difference in the thermal environment parameters within different courtyards, and then determine some shortcomings in the current courtyard layout design. The inferences drawn from this work will provide a scientific basis for the design, layout, and construction of courtyards in other cold plateau areas.

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Can Low Cost Housing in Malaysia be Considered as Affordable Housing ?

10.15396/eres2005_328 ◽

2005 ◽

Keyword(s):

Affordable Housing ◽

Low Cost ◽

Low Cost Housing

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Low Cost Housing: An Appraisal of an Experiment in Nigeria

Public Administration and Development ◽

10.1002/j.1099-162x.1977.tb00447.x ◽

1977 ◽

Vol 16 (2) ◽

pp. 114-120

Author(s):

Adepoju Onibokun

Keyword(s):

Low Cost ◽

Low Cost Housing

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How Can We Adapt Thermal Comfort for Disabled Patients? A Case Study of French Healthcare Buildings in Summer

Energies ◽

10.3390/en14154530 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4530

Author(s):

Youcef Bouzidi ◽

Zoubayre El Akili ◽

Antoine Gademer ◽

Nacef Tazi ◽

Adil Chahboun

Keyword(s):

Thermal Comfort ◽

Thermal Environment ◽

Residential Buildings ◽

Linear Regression Analysis ◽

Environmental Parameters ◽

Physical Parameters ◽

Mean Radiant Temperature ◽

Operative Temperature ◽

Neutral Temperature ◽

Radiant Temperature

This paper investigates adaptive thermal comfort during summer in medical residences that are located in the French city of Troyes and managed by the Association of Parents of Disabled Children (APEI). Thermal comfort in these buildings is evaluated using subjective measurements and objective physical parameters. The thermal sensations of respondents were determined by questionnaires, while thermal comfort was estimated using the predicted mean vote (PMV) model. Indoor environmental parameters (relative humidity, mean radiant temperature, air temperature, and air velocity) were measured using a thermal environment sensor during the summer period in July and August 2018. A good correlation was found between operative temperature, mean radiant temperature, and PMV. The neutral temperature was determined by linear regression analysis of the operative temperature and Fanger’s PMV model. The obtained neutral temperature is 23.7 °C. Based on the datasets and questionnaires, the adaptive coefficient α representing patients’ capacity to adapt to heat was found to be 1.261. A strong correlation was also observed between the sequential thermal index n(t) and the adaptive temperature. Finally, a new empirical model of adaptive temperature was developed using the data collected from a longitudinal survey in four residential buildings of APEI in summer, and the obtained adaptive temperature is 25.0 °C with upper and lower limits of 24.7 °C and 25.4 °C.

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The Productive Landscape in the Desert Margin for the Sustainable Development of Rural Settlements: An Innovative Greenbelt for Maranjab Desert in Iran

Sustainability ◽

10.3390/su13042077 ◽

2021 ◽

Vol 13 (4) ◽

pp. 2077

Author(s):

Mahnaz Sarlak ◽

Laura Valeria Ferretti ◽

Rita Biasi

Keyword(s):

Climate Change ◽

Land Use ◽

Low Cost ◽

Agricultural Systems ◽

Rural Settlements ◽

Green Belt ◽

The Sustainable Development ◽

Research Questions ◽

New Form ◽

Low Levels

About two billion rural individuals depend on agricultural systems associated with a high amount of risk and low levels of yield in the drylands of Asia, Africa, and Latin America. Human activities, climate change and natural extreme events are the most important drivers of desertification. This phenomenon has occurred in many regions of Iran, particularly in the villages in the periphery of the central desert of Iran, and has made living in the oases so difficult that the number of abandoned villages is increasing every year. Land abandonment and land-use change increase the risk of desertification. This study aims to respond to the research questions: (i) does the planning of green infrastructures on the desert margin affect the distribution and balance of the population? (ii) how should the green belt be designed to have the greatest impact on counteracting desertification?, and (iii) does the design of productive landscape provide the solution? Through a wide-ranging and comprehensive approach, this study develops different scenarios for designing a new form of green belt in order to sustainably manage the issues of environmental protection, agricultural tradition preservation and desertification counteraction. This study proposes a new-traditional greenbelt including small low-cost and low-tech projects adapted to rural scale.

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Turning Base Transceiver Stations into Scalable and Controllable DC Microgrids Based on a Smart Sensing Strategy

Sensors ◽

10.3390/s21041202 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1202

Author(s):

Miguel Tradacete ◽

Carlos Santos ◽

José A. Jiménez ◽

Fco Javier Rodríguez ◽

Pedro Martín ◽

...

Keyword(s):

Electricity Market ◽

Low Cost ◽

Storage System ◽

Environmental Parameters ◽

Weather Conditions ◽

Energy Storage System ◽

Electricity Grid ◽

Dc Microgrids ◽

Smart Sensing ◽

Battery Energy

This paper describes a practical approach to the transformation of Base Transceiver Stations (BTSs) into scalable and controllable DC Microgrids in which an energy management system (EMS) is developed to maximize the economic benefit. The EMS strategy focuses on efficiently managing a Battery Energy Storage System (BESS) along with photovoltaic (PV) energy generation, and non-critical load-shedding. The EMS collects data such as real-time energy consumption and generation, and environmental parameters such as temperature, wind speed and irradiance, using a smart sensing strategy whereby measurements can be recorded and computing can be performed both locally and in the cloud. Within the Spanish electricity market and applying a two-tariff pricing, annual savings per installed battery power of 16.8 euros/kW are achieved. The system has the advantage that it can be applied to both new and existing installations, providing a two-way connection to the electricity grid, PV generation, smart measurement systems and the necessary management software. All these functions are integrated in a flexible and low cost HW/SW architecture. Finally, the whole system is validated through real tests carried out on a pilot plant and under different weather conditions.

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