نتایج جستجو برای: heating and cooling systems

تعداد نتایج: 17000165  

2001
Antonio C. da Silva Scott T. Kay Andrew R. Liddle Peter A. Thomas Frazer R. Pearce Domingos Barbosa

We use hydrodynamical simulations to assess the impact of radiative cooling and ‘pre-heating’ on predictions for the Sunyaev–Zel’dovich (SZ) effect. We find that cooling significantly reduces both the mean SZ signal and its angular power spectrum. Pre-heating can give a higher mean distortion, while leaving the angular power spectrum below that found in a simulation without heating or cooling. ...

Journal: :مکانیک سیالات و آیرودینامیک 0
نازیلا خانی حسام الدین ابن الدین حمیدی

in this paper by the introduction of the basic equipment of a solar cooling system, solar hydrogen ammonia refrigeration system as a solar cooling technique will be discussed. using heat collector and absorption refrigeration allows us to use residual heat, for cooling, heating and producing hot water and boiling water .this research focuses on methods of heat transfer from the sun into the gen...

Hamid Mokhtari Mohammad Ameri,

In this paper, using parabolic mirrors, a solar field was designed, which was related to a storage tank for a residential complex in the city of Tafresh located in the center of Iran. The design was performed for the existing oils: VP1, THERMINOL 66, THERMINOL 59. Finally, considering an organic cycle with R123 as working fluid and assuming a minimum length required for oil flow rate to reach a...

Journal: :Sustainability 2022

Modern buildings in cold climates, like Norway, may have simultaneous heating and cooling demands. For these buildings, integrated systems with heat pumps, as well short-term long-term thermal storage, are promising solutions. Furthermore, combining this system renewables aids the transition to future sustainable building energy systems. However, cost-effectively designing operating such a comp...

2009
Walter W. Yuen Jianping Tu

The feasibility of using carbon foam as a heat sink and heat spreader in optoelectronic packages is assessed. A “supercooler” is designed, fabricated and tested to verify its cooling capability under high heat flux conditions in a typical optoelectronic package. The supercooler uses carbon foam as a primary heat transfer material. Water is soaked into the carbon foam and under evacuated pressur...

2003
RICHARD A. ANTHES

Additional experiments with the slowly varying axisymmetric hurricane model described by Anthes are presented. Variable horizontal eddy viscosity coefficients are utilized to study circulations that result from an increased heating function and a heating function with a double maximum along the radial direction. Infrared radiative cooling is modeled for the clear tropical atmosphere following S...

Journal: :Physics in medicine and biology 2011
L W Sheppard V Vuksanović P V E McClintock A Stefanovska

We apply wavelet-based time-localized phase coherence to investigate the relationship between blood flow and skin temperature, and between blood flow and instantaneous heart rate (IHR), during vasoconstriction and vasodilation provoked by local cooling or heating of the skin. A temperature-controlled metal plate (approximately 10 cm2) placed on the volar side of the left arm was used to provide...

Journal: :international journal of advanced design and manufacturing technology 0
nasim nayebpashaee iran university of science & technology h. n. vafaeenezhad s. m. m. hadavi s. m. m. hadavi s. h. seyedein m. r. aboutalebi

an attempt was made to investigate the thermal and residual stress distribution in a novel three layer (la 2 zr 2 o 7 / 8ysz/ nicraly) during a real-like heating regime which includes heating, service time and final cooling. for achieving maximum accuracy and consistency in calculation of thermal and mechanical properties of hybrid coating system, all related andrequired properties were introdu...

Journal: :Science 2008
Lon E Bell

Thermoelectric materials are solid-state energy converters whose combination of thermal, electrical, and semiconducting properties allows them to be used to convert waste heat into electricity or electrical power directly into cooling and heating. These materials can be competitive with fluid-based systems, such as two-phase air-conditioning compressors or heat pumps, or used in smaller-scale a...

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