نتایج جستجو برای: secondary cooling

تعداد نتایج: 355845  

Hadi Ghaebi, Mehdi Bahadorinejad Mohammad Hassan Saidi,

Confined aquifers are formations surrounded by impermeable layers called cap rocks and bed rocks. These aquifers are suitable for the seasonal storage of thermal energy. A confined aquifer was designed to meet the cooling and heating energy needs of a residential building complex located in Tehran, Iran. The annual cooling and heating energy needs of the buildings were estimated to be 8.7...

2011
T. S. Dhanasekaran Ting Wang

Increasing the turbine inlet temperature can increase the gas turbine cycle efficiency. In order to increase the turbine inlet temperature significantly, an advanced cooling system has to be essentially developed. Injection of mist to the coolant fluid is considered a promising technique to protect the hot components such as combustor liners, combustor transition pieces, and turbine vanes and b...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1378

طراحی محفظه احتراق از مهم ترین قسمتهای طراحی یک توربین گاز می باشد. وجود معادلات غیرخطی، پیچیده و گذرا، بررسی پارامترهای حاکم بر طراحی و بهینه نمودن آنها را بسیار مشکل می کند. یکی از نکات مهم در طراحی محفظه احتراق خنک کاری آن می باشد که بواسطه وجود دماهای بالای گاز در محفظه و محدودیت مواد قابل کاربرد از اهمیت ویژه ای برخوردار است . بمنظور خنک کاری محفظه احتراق از دو روش خنک کاری توسط مجرا (slot...

The present study investigates the effectiveness of thermostat control strategy in cooling energy consumption in residential buildings. To evaluate the energy consumption, two scenarios including a residential zone with and without the thermostat control system are assumed. The TRNSYS software provides an efficient numerical tool to model and evaluate a cooling system. Furthermore, since solar-...

2013
Gregory Hansen Michele Grimason James W Collins Mark S Wainwright

BACKGROUND Neurologic complications of pediatric acute liver failure (ALF) are a major determinant of outcome. Management of these complications, including increased intracranial pressure (ICP) is largely supportive. Although hypothermia is an effective treatment for perinatal asphyxia and is used to reduce ICP following traumatic brain injury, it has not been evaluated for neurologic complicat...

2015
Yia-Ping Liu Yi-Hsien Lin Yu-Chun Chen

Both animal and clinical studies suggest that sympathetic overactivity is a major determinant of pathophysiological conditions, including hypertension and myocardial infarction. β-adrenoceptor (β-ADR) antagonists are largely used in cardiovascular diseases and appear to reduce mortality and morbidity [1]. However, the complexity of the influence of β-ADR blockade on autonomic and cardiovascular...

2001
A. C. Edge

We present the detections of CO line emission in the central galaxy of sixteen extreme cooling flow clusters using the IRAM 30m and the JCMT 15m. These detections of CO(1-0), CO(2-1), CO(3-2) and CO(4-3) are consistent with the presence of a substantial mass of warm molecular gas (10M⊙) within 50 kpc radius of the central galaxy. We present limits on thirteen other galaxies in similarly extreme...

Hadi Pasdarshahri Moien Farmahini-Farahani

In this paper, exergy of conditioned air, exergy efficiency, irreversibility, and entropy generation of common models of evaporative cooling have been investigated in five cities of Iran. Direct evaporative cooling (DEC), indirect evaporative cooling (IEC), and two-stage IEC/DEC as the most popular methods of cooling have been modeled. Atmospheric conditions are considered as the dead state of ...

Journal: :Applied Thermal Engineering 2022

Day-and-night radiative sky cooling has emerged as a potential alternative to conventional technologies such refrigeration-based air conditioning and evaporative wet cooling. Both can passively achieve sub-ambient without consuming electricity. Although both techniques are subject impacts from various weather conditions, the extents of under same conditions not well understood. In this work, we...

2006
T. Tomiyama G. R. Huss

Introduction: Pallasites are stony-iron meteorites that consist of comparable volumes of olivine and Fe-Ni metal. It is widely believed that pallasites were formed at the interface of the metallic core and peridotitic mantle in differentiated asteroid(s) [1,2]. Fe-Ni metal in pallasites exhibits Widmanstätten structure indicative of slow cooling (~10 C/yr) [3,4]. These metallographic cooling ra...

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