Results 21 to 30 of about 536,814 (315)

Thermoeconomic approach for the analysis of control system of energy plants [PDF]

, 2012
In this paper a thermoeconomic approach is applied to the dynamic model of a Power System in order to investigate the effects of the control system on the primary energy consumption and on the economic costs of the product.
Baccino, Giorgia, Giorgia Baccino, Verda, Vittorio, Vittorio Verda   +3 more
core   +1 more source

Energy Conservation in an Office Building Using an Enhanced Blind System Control

Energies, 2017
The two spaces office module is usually considered as a representative case-study to analyse the energetic improvement in office buildings. In this kind of buildings, the use of a model predictive control (MPC) scheme for the climate system control ...
Edorta Carrascal-Lekunberri, Izaskun Garrido, Bram van der Heijde, Aitor J. Garrido, José María Sala, Lieve Helsen   +5 more
doaj   +1 more source

Investigation of the operating conditions influence on the optical telescope performance when capturing star images

Компьютерная оптика, 2022
We propose combining the functionality of star sensors and the optical system of a nanosatel-lite optical-electronic telescopic module (OETM) for Earth remote sensing (ERS) in order to re-duce the influence of thermoregulation inaccuracy on the accuracy ...
S.V. Tsaplin, I.V. Belokonov, S.A. Bolychev, A.E. Romanov   +3 more
doaj   +1 more source

Stochastic optimal control of HVAC system for energy-efficient buildings

, 2021
The heating, ventilation and air-conditioning (HVAC) system accounts for substantial energy use in buildings, whereas a large group of occupants are still not actually feeling comfortable staying inside.
Spanos, Costas, J., Yang, Yu, Hu, Guoqiang   +2 more
core   +1 more source

Enhancing the interfacial thermal conduction of the graphene sheets via chemical bond–bond connections

AIP Advances, 2019
Graphene, after its discovery in 2004, was known to possess extremely high thermal conductance. In the practical applications, however, the thermal conductance was unfortunately low compared with its theoretical value since the heat transfer among ...
Min-Shan Li, Kai-Xuan Chen, Yuan-Xiang Fu, Dong-Chuan Mo, Shu-Shen Lyu   +4 more
doaj   +1 more source

Numerical and Experimental Study on Convective Heat Transfer Characteristics in Foam Materials

Energies, 2020
Foam materials are widely used in heat exchange because of their high porosity and large specific surface area. Correctly characterizing heat transfer characteristics is the key to ensuring efficient heat transfer.
Hongyan Lu, Lixin Yang, Zhiyong Wu, Siqi Xu   +3 more
doaj   +1 more source

An Analytical Method for Solar Heat Flux in Spacecraft Thermal Management Under Multidimensional Pointing Attitudes

Energies
In order to provide a theoretical basis for the thermal analysis and management of spacecraft/payload interstellar pointing attitudes, which are used for inter-satellite communication, this paper develops an analytical method for solar heat flux under ...
Xing Huang, Tinghao Li, Hua Yi, Yupeng Zhou, Feng Xu, Yatao Ren   +5 more
doaj   +1 more source

Thermal comfort based fuzzy logic control

, 2001
Most heating, ventilation and air conditioning (HVAC) control systems are considered as temperature control problems. In this work, the predicted mean vote (PMV) is used to control the indoor temperature of a space by setting it at a point where the PMV ...
Underwood, Chris, Danaher, Sean, Gouda, M. M.   +2 more
core   +1 more source

Improving Simultaneous Cooling and Power Load-Following Capability for MGT-CCP Using Coordinated Predictive Controls

Energies, 2019
The distributed energy system is an energy supply method built around the end users, which can achieve energy sustainability and reduce emissions compared to traditional centralized energy systems.
Chen Chen, Jiangfan Lin, Lei Pan, Kwang Y. Lee, Li Sun   +4 more
doaj   +1 more source

Overview of electric pump units for spacecraft thermal control systems

Космические аппараты и технологии, 2021
The paper reports a brief description of spacecraft operating conditions, the main reasons of heating and thermal gradient appearance and need to reassign the thermal energy.
E. B. Korotkov, O. V. Shirobokov, S. A. Matveev, Z. A. Yudina   +3 more
doaj   +1 more source