نتایج جستجو برای: water cycle

تعداد نتایج: 808550  

In this paper, a forced circulation solar water heater system is simulated for different hot water consumption profiles using flat plate collectors as well as evacuated tube collectors. The profiles studied are the actual samples of hot water consumption profiles for different commercial centers and institutions. Dynamic simulation outputs of system thermal performance are used as economic anal...

Journal: :Environmental science & technology 2010
By Michael Blackhurst Chris Hendrickson Jordi Sels i Vidal

Effective water management is critical for social welfare and ecosystem health. Nevertheless, information necessary to meaningfully assess sustainable water use is incomplete. In particular, little information is available on supply chain or indirect water use for the production of goods and services in the United States. We estimate a vector of water withdrawals for all 428 sectors in the 2002...

M. Abdolalipouradl, S. Jafarmadar Sh. Khalilarya

In this paper, a new power, heating and hydrogen cogeneration cycle from Sabalan geothermal two wells is proposed and analyzed. In the proposed system, a new double flash cycle and organic Rankine cycle are used for power production. A proton exchange membrane (PEM) is also used for hydrogen production and the domestic water heater is used for heating. The impacts of some design parameters, suc...

Journal: :مرتع و آبخیزداری 0
ایمان اسلامی مدرس دانشکده منابع طبیعی دانشگاه یزد، ایران علی اکبر مهرابی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران غلامرضا زهتابیان استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران محمدرضا اختصاصی دانشیار دانشکده منابع طبیعی، دانشگاه یزد، ایران محمدعلی زارع چاهوکی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران

yazd province because of cultural and historical background of the distant past always had known as ambitious and hard-working people. manifesting multiple efforts of these people is seen in water harvesting. in yazd province, background issues such as evaluation and assessment of water, ownership and agricultural water share refers to the distant past which has been changes over time in type a...

2000
Toshio Koike Soroosh Sorooshian

partners and the CEOS space agencies. Through CEOP, CEOS will be able to contribute greatly to the understanding and prediction of the water cycle through the integrated use of satellites of CEOS members in cooperation with the IGOS partnership. CEOP represents a unique opportunity to improve the scientific basis needed to achieve overall water cycle documentation and prediction goals. Continue...

2014
A. A. Bakare

The objective of present study is to determine the effect of green coconut water on estrous cycle in metoclopramide-induce hyperprolactinemia in female Sprague-Dawley rats. Fifty adult cyclic female Sprague-Dawley rats were used for this study. The animals were treated with green coconut water (GCW) before, after and concurrently with metoclopramide to induce hyperprolactinemia. The posttreated...

2000
Alex Hall Syukuro Manabe

Using two versions of the GFDL coupled ocean-atmosphere model, one where water vapor anomalies are allowed to affect the longwave radiation calculation and one where they are not, we examine the role of water vapor feedback in internal precipitation variability and greenhouse-gas-forced intensification of the hydrologic cycle. Without external forcing, the experiment with water vapor feedback p...

2010
Peter N. Blossey Zhiming Kuang David M. Romps

[1] The processes that fix the fractionation of the stable isotopologues of water in the tropical tropopause layer (TTL) are studied using cloud‐resolving model simulations of an idealized equatorial Walker circulation with an imposed Brewer‐Dobson circulation. This simulation framework allows the explicit representation of the convective and microphysical processes at work in the TTL. In this ...

Journal: :international journal of environmental research 2015
m. abbaspour a.r. saraei

performance optimization of a single-effect lithium bromide water absorption refrigerationsystem is the subject of this paper. first, the thermodynamic model of the system wasderived based on thefirst and second law analysis of an absorption refrigeration cycle with libr-water as the working fluid pair.then, the effects of different design parameters such as the generator inlet hot water temper...

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