Results 31 to 40 of about 5,318,618 (294)

Suppression of natural convection heat transfer coefficients in an attic shaped enclosure [PDF]

, 2010
The use of convection suppression devices has been widely discussed in the literature as a means of reducing natural convection heat loss from enclosed spaces.
Carson, James K., M. Duke, Duke, Mike, Anderson, Timothy Nicholas, J.K. Carson, T.N. Anderson   +5 more
core   +1 more source

Refrigerant forced-convection condensation inside horizontal tubes [PDF]

, 1968
High vapor velocity condensation inside a tube was studied theoretically. The heat transfer coefficients were calculated by the momentum and heat transfer analogy.
Bae, S., Bae, Soonhoon, J.S. Maulbetsch, Maulbetsch, John S., S. Bae, Maulbetsch, J.S., W.M. Rohsenow, Rohsenow, Warren M., Rohsenow, W.M.   +8 more
core   +1 more source

The augmentation of internal tip heat transfer in gas turbine blades using a pair of delta-winglet vortex generators

, 2021
A novel method to enhance the heat transfer on the internal tip surface of gas turbine blades was developed. Effects of delta-winglet vortex generators (DWVG) and their angle of attack on the vortical structures and mechanism of enhanced heat transfer ...
Wang, Zhongqi,, Sundén, Bengt,, Luo, Lei,, Lund University., Qiu, Dandan,, Zhao, Zhiqi,, Zhou, Xun,   +6 more
core   +1 more source

Performance evaluation and optimization guidance for steam generating heat pumps with significant temperature lift

Case Studies in Thermal Engineering
Steam generating heat pumps (SGHPs) offer a promising alternative to coal-fired boilers. To address the lack of general optimization strategy of autocascade SGHP (ASGHP) for variable operating conditions and variable cycle configurations, this paper ...
Xudong Ma, Yanjun Du, Yuting Wu, Biao Lei, Cancan Zhang   +4 more
doaj   +1 more source

Experimental Study of Frost Crystals Dendrite Growth on Two Neighboring Separate Frozen Water Drops on a Cryogenic Cold Surface under Natural Convection Conditions

Energies, 2023
The effects of cold surface temperature, wet air state (temperature and humidity) and original drop size on frost dendrites growth of two neighboring separate frozen water drops of same size under natural convection conditions were investigated by ...
Fengjiao Yu, Zhongliang Liu, Yanxia Li, Yanling Chen, Yi Li   +4 more
doaj   +1 more source

An experimental investigation of structured roughness on heat transfer during single-phase liquid flow at microscale [PDF]

, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Lin, TY, Kandlikar, SG, 3rd Micro and Nano Flows Conference (MNF2011)   +2 more
core   +6 more sources

Study on the Characteristics of Expander Power Output Used for Offsetting Pumping Work Consumption in Organic Rankine Cycles

Energies, 2014
The circulation pump in an organic Rankine cycle (ORC) increases the pressure of the liquid working fluid from low condensing pressure to high evaporating pressure, and the expander utilizes the pressure difference to generate work.
Yu-Ting Wu, Biao Lei, Chong-Fang Ma, Lei Zhao, Jing-Fu Wang, Hang Guo, Yuan-Wei Lu   +6 more
doaj   +1 more source

Development and investigation of form-stable quaternary nitrate salt based composite phase change material with extremely low melting temperature and large temperature range for low-mid thermal energy storage

Energy Reports, 2022
This paper reports a form-stable molten salt based composite phase change material (CPCM) owning extremely low melting point and large temperature range that can be a promising candidate used in low and middle temperature thermal energy storage fields ...
Qi Li, Wenzhen Wei, Yuying Li, Chuan Li, Ruihuan Ge, Yanping Du, Xinjing Zhang, Yuting Wu   +7 more
doaj   +1 more source

Preparation and characterization of an aluminum ammonium sulfate dodecahydrate-based composite phase change material with low supercooling and high thermal conductivity

Case Studies in Thermal Engineering
Aluminum ammonium sulfate dodecahydrate (AASD) is a promising hydrated salt-type phase change material. However, its application is severely hindered by its large undercooling and low thermal conductivity.
Zhansheng Fan, Yuanwei Lu, Tian Zhao, Qi Gao, Zhengyang Li, Yuting Wu   +5 more
doaj   +1 more source

Pulsating Enhanced Heat Transfer [PDF]

Bulletin of Science and Practice, 2019
The paper mainly introduces the mechanism of turbulent fluid heat transfer enhancement and the factors affecting heat transfer. The physical parameters of pulsating fluid mainly include pulsation frequency and amplitude. The factors affecting heat transfer are the physical properties of the pulsating fluid and the installation of a pulsation generator.
H. Qian, S. Kudashev, V. Plotnikov
openaire   +1 more source