Results 1 to 10 of about 106,787 (169)

Testing heat supply networks for heat losses [PDF]

open access: yesE3S Web of Conferences, 2021
The scope of operations of the branch where the survey was carried out is: transmission and distribution of heat and heating medium to consumers through heat supply networks, maintaining the proper quality and amount of thermal power and heating medium ...
Mozgova Anna
doaj   +1 more source

Development of simulation models of the hydraulic system of passenger and transport aircraft in normal and failure situations [PDF]

open access: yesE3S Web of Conferences, 2023
The paper presents a simulation model of the hydraulic system of an aircraft containing a block supply with a variable flow pump, the discharge line of which is presented in the form of a certain container with liquid, the modulus of elasticity of which ...
Volkov Aleksei   +3 more
doaj   +1 more source

Determination of the heat losses of insolation passive solar heating systems [PDF]

open access: yesBIO Web of Conferences, 2023
The article considers the determination of heat losses of insolation passive solar heating systems. The calculation expressions for determining heat losses in a building with a direct solar heating system through glazing are given and the total heat loss
Dusyarov Akmal   +2 more
doaj   +1 more source

Analysis of Cylindrical Cavity Receiver for Different Heat Losses [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2023
The heat losses are mainly affects on the performance of cavity receiver of solar concentrator. In this paper, the experimental and numerical study is carried out for different heat losses from cylindrical cavity receiver of 0.35 m cavity diameter and 0 ...
Vinod Shewale, Arvind Kapse, Shyam Mogal
doaj   +1 more source

Optimization of Thermal Performance of Windows in Intermediate Housing in Cold and Dry Climate of Tabriz [PDF]

open access: yesIranica Journal of Energy and Environment, 2021
Windows in the building are the biggest elements of heat loss through convective heat transfer. The purpose of study is to select appropriate dimensions for windows relative to shell and appropriate glazing for windows, in order to achieve optimal ...
S. Abdoli Naser   +3 more
doaj   +1 more source

A New Perspective on Residential Building Ventilation from the Point of View of Achieving the Desired Indoor Air Quality using Different Ventilation Systems

open access: yesSlovak Journal of Civil Engineering, 2023
The case study analyses a specifically described situation from the present and a summary of events from the past, finds alternative solutions, and decides on one of them.
Straková Zuzana, Marková Júlia
doaj   +1 more source

Increasing the energy efficiency of thermal insulation of heat network pipelines in Northern and Northeastern regions of Russia [PDF]

open access: yesИнженерно-строительный журнал, 2011
For cities of Northern and Northeastern regions of Russian Federation located in harsh climatic conditions it is necessary to modernize the heat networks intensively to ensure economic efficiency and reliability of heat supply.
V.S. Slepchenok, G.P. Petrakov
doaj   +1 more source

Heating a 2D Thermoelastic Half-Space Induced by Volumetric Absorption of a Laser Radiation

open access: yesMathematics, 2020
In this work, the generalized theory with dual-phase-lag of thermoelasticity is employed to study the influences induced by absorbing a penetrating laser radiation inside a 2D thermoelastic semi-infinite medium.
Ismail M. Tayel
doaj   +1 more source

Experiment and Numerical Analysis of Thermal Performance of a Billboard External Receiver

open access: yesEnergies, 2022
The receiver serves as a critical component in tower-type concentrated solar power plants. Responsible for light-heat conversion, the efficiency of the receiver significantly affects the overall performance of the power plant.
Jiabin Fang   +7 more
doaj   +1 more source

Diagnostic Protocol for Thermal Performance of District Heating Pipes in Operation. Part 2: Estimation of Present Thermal Conductivity in Aged Pipe Insulation

open access: yesEnergies, 2021
Buried and operating district heating (DH) pipes are exposed to thermal degradation of their polyurethane (PUR) insulation over time, and their status is hard to assess without excavation.
Peter Lidén   +2 more
doaj   +1 more source

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