Results 51 to 60 of about 199,338 (261)
Assessment of two-level heat pump installations’ power efficiency for heat supply systems
Trudy Odesskogo Politehničeskogo Universiteta, 2015 The problem of energy saving becomes one of the most important in power engineering. It is caused by exhaustion of world reserves in hydrocarbon fuel, such as gas, oil and coal representing sources of traditional heat supply.
Аlla Е. Denysova, Igor O. Bodnar
doaj +1 more source
Experimental testing of cooling internal loads with a radiant wall [PDF]
, 2018 Thermally activated building systems (TABS) consist of pipes or ducts embedded in the building structure. This is a well-known technology for its capability to reduce energy use for cooling buildings.
Cabeza, Luisa F. +4 more
core +2 more sources
Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres
Advanced Engineering Materials, EarlyView.This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann +3 more
wiley +1 more source
Long-Term Performance Measurement and Analysis of a Small-Scale Ground Source Heat Pump System
Energies, 2020 Recent data suggest that heat pumps, despite having the potential to cover over 90% of the global space and water heating demands, only provide less than 5% of global heating.
Hao Liu, Hongyi Zhang, Saqib Javed
doaj +1 more source
Seasonal evaluation of heat pump system for building heating and ventilation – a case study [PDF]
E3S Web of Conferences, 2019 This paper presents results obtained from seasonal evaluation of ground source heat pump (GSHP) and exhaust air heat pump (EAHP) systems used for heating and ventilation of a school building.
Bugaj Andrzej, Miniewicz Maciej
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
The analysis of long-term borehole heat exchanger system exploitation
Computer Assisted Methods in Engineering and Science, 2017 The key issue in designing borehole heat exchangers (BHE) is the long-term performance of the ground source heat pump (GSHP) systems. The performance directly reflects economic profitability and depends on a large number of parameters including rock ...
Marek Jaszczur, Tomasz Śliwa
doaj +1 more source
Solar Energy Advances, 2023 Photovoltaic - Thermal (PVT) collectors convert solar radiation into useful heat and electricity simultaneously, and with the same PV area, higher solar energy is harvested; hence PVT can be a key technology for the future supply of buildings.
Bharat Chhugani +3 more
doaj +1 more source
Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger +2 more
wiley +1 more source
Waste Water Transformed into Heat Energy [PDF]
, 2015 This study investigates the feasibility of utilising ground water ingress into the Glasgow Subway system. At present this unused excess water is being discharged into the city’s drainage system as waste. This valuable resource could be channelled through
Aaen, Bjorn +4 more
core