Wind energy and natural ventilation potential of a wind catcher in Yazd – Iran (a long-term measurement)

2017 ◽  
Vol 14 (7) ◽  
pp. 650-655 ◽  
Author(s):  
Zhaleh Hedayat ◽  
Bert Belmans ◽  
M. Hossein Ayatollahi ◽  
Ine Wouters ◽  
Filip Descamps
2019 ◽  
pp. 0958305X1989307
Author(s):  
LM López-Manrique ◽  
EV Macias-Melo ◽  
KM Aguilar-Castro ◽  
I Hernández-Pérez ◽  
HP Díaz-Hernández

In this study, we present a review of articles that address the state of the art in wind energy from different perspectives, specifically focusing on the criteria used for wind energy assessment and wind turbine standards, along with an overview of the technologies necessary to make reliable Wind Power-Grid penetration more efficient. Wind power dynamics are also considered from the perspective of their intermittency and the nature of wind speed variability in order to establish appropriate sampling times for measurements and monitoring. The literature discussed is representative of the technological and methodological advances dedicated to the development, adaptation and application of statistical, computational, numerical and artificial intelligence tools for an assessment of wind energy and wind power forecasting. These applications and methodologies commonly use data registers measured in very short, short, medium and long-term measurement campaigns. Finally, literature on wind power social, environmental and economic policies and trends in costs-capacity-addition and their impact are reviewed from a global perspective. In light of today’s concerns with global warming, it is essential that wind energy interact steadily on the grid with experienced operators and high automatic-control technology worldwide.


2016 ◽  
Vol 26 (6) ◽  
pp. 744-757 ◽  
Author(s):  
Huibo Zhang ◽  
Jing Liu ◽  
Chunan Li ◽  
Zhiwei Lian

Moisture becomes problematic in underground civil air defence work because of heavy rusting of protection equipment, mould and construction deterioration. This study conducted long-term measurement of the heat and humidity environment in a residential and a non-residential underground civil air defence work in Beijing. The thermal environment was very stable at a good level except in some summer days in the non-residential civil air defence work because of moisture insulation in summer and straw board interior wall furnishing, whereas it was very severe and varied with changing outdoor conditions in the residential civil air defence work. The humidity environment in the residential civil air defence work was wet or very wet (RH > 80%) for over 20% of the year, which may cause mould growth and surface condensation, because of low indoor temperature in winter and occupant activities and natural ventilation in summer. The findings of this study may prove important in elucidating the formation mechanism of thermal environment in civil air defence work and to develop appropriate desiccant solutions.


1973 ◽  
Vol 51 (4) ◽  
pp. 701-710 ◽  
Author(s):  
Roger S. Smith

The long-term measurement of aerobic fungal respiration, both on an agar medium and on wood blocks, was possible using a gas-chromatographic technique for the detection of the carbon dioxide. This method was fully automated to analyze gas samples sequentially from eight or more growth chambers, after variable but determined time periods. It provided a precise quantitative measure of the respired carbon dioxide, presented both in the form of punched computer tape and normal printed teleprinter output. This apparatus worked continuously for several years without serious breakdown.The fungi Lentinus lepideus, Lenzites trabea, Poria monticola, and several strains of Coniophora puteana all showed a rhythm in their respiration which was not controlled by temperature or light. The magnitude and frequency of the rhythmical peaks in carbon dioxide production varied between fungi and, although there was considerable variation between different isolates of the same species, the separation of these species of fungi based on their different patterns of respiration was possible.


Sign in / Sign up

Export Citation Format

Share Document