Air-to-water heat pump assessment: Part 1 – Experimental setup [PDF]
This paper is part 1 of the investigation on the exergetic and exergoeconomic parameters of an existing system with an air-to-water heat pump unit as a heat source. Part 1 presents the used experimental setup.
Doseva Nadezhda +3 more
doaj +1 more source
On the issue of inertial excitation of diagnostic low-frequency vibrations in pipelines of housing and communal services [PDF]
The article discusses and analyzes issues related to the diagnosis of the technical condition of pipelines for housing and communal services. The main attention is paid to the inertial excitation of diagnostic low-frequency vibrations in the pipeline ...
Shakurova R Z +2 more
doaj +1 more source
Review of modern demand control solutions and technologies for HVAC operation [PDF]
HVAC systems, which use traditional control strategies with fixed ventilation rates or with ventilation rate schedules, do not adjust according to the required IAQ and thermal comfort. As a result, building spaces are being over or under-ventilated.
Borodinecs Anatolijs +4 more
doaj +1 more source
Simulation of IAQ and thermal comfort of a classroom at various ventilation strategies [PDF]
It has been reported that there is a large issue regarding the IEQ in schools and classrooms as they often do not have a mechanical ventilation system or do not operate it to save on electricity bills.
Zemitis Jurgis +3 more
doaj +1 more source
Hydrothermal performance of the external wooded frame wall structure reinforced with ballistic panels [PDF]
In recent years construction of bullet resistant walls has become very common not only for military buildings but also for public and residential buildings. The existing wall structure in those buildings is reinforced by ballistic panels. However, in the
Borodinecs Anatolijs +4 more
doaj +1 more source
This research aims to design an optimal closed-loop pulsating heat pipe (CLPHP), which is applied as a heat transfer device to replace the thermosyphon in a commercial evacuated tube solar water heater system (ETSWH).
Methida Siritan +3 more
doaj +1 more source
Manufacturing of corrosion-resistant steel 316L using additive technologies as a way to increase its corrosion resistance [PDF]
Austenitic steel 316L is a common corrosion-resistant structural material used in a variety of industries from food to nuclear. There is a well-known tendency of steel 316L to precipitate second phases in the temperature range of 500 ... 800 ° С.
Popkova Daria +4 more
doaj +1 more source
Model for building traction information of suburban rolling stock on hydrogen fuel [PDF]
The materials consider the possibility of using hydrogen as a fuel for suburban rolling stock in Ukraine. The analysis of the use of hydrogen fuel in transport in various countries of the world is carried out.
Falendysh Anatoly +4 more
doaj +1 more source
Analysis of different building exterior walls insulations using eQUEST [PDF]
In this paper, eQUEST simulation tool is used to study of the effect of varying the insulation type (polysterene, polyurethane, and polyisocyanurate) and thickness on heat space energy consumption.
Zerroug Abdellah, Dzelzitis Egils
doaj +1 more source
Unparticle effects on cosmic ray photon and $e^\pm$ [PDF]
We study the effects of unparticle physics on the cosmic ray photon and $e^\pm$, including on the pair production (PP) and elastic scattering (ES) of cosmic ray photon off various background radiations, and on the inverse Compton scattering of cosmic ray
H.E.S.S. collaboration +6 more
core +1 more source

