Results 51 to 60 of about 286,138 (309)
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
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
Dynamic thermal simulation of ground heat exchangers for renewable heating of buildings [PDF]
, 2016 The temperature of deep soil is relatively stable throughout a year and the thermal energy stored in soil can be used to provide renewable heat or coolth for a building.
Gan, Guohui
core +2 more sources
Advances in Mechanical Engineering, 2013 Due to the low temperatures, the heating efficiency of air source heat pump systems during the winter is very low. To address this problem, a low-temperature solar hot water system was added to a basic air source heat pump system. Several parameters were
Jinshun Wu +8 more
doaj +1 more source
Research on the Application of Heat Pump with Different Coupling Methods in Heating Terminal [PDF]
E3S Web of ConferencesUnder the dual pressure of energy supply and demand contradiction and increasingly severe environmental pollution, adopting clean energy to replace traditional fossil energy, reducing conventional energy consumption, and achieving clean heating is a ...
Wang Zheng, Zhang Fengxia
doaj +1 more source
EnergyPlus Air Source Integrated Heat Pump Model [PDF]
, 2016 This report summarizes the development of the EnergyPlus air-source integrated heat pump model. It introduces its physics, sub-models, working modes, and control logic. In addition, inputs and outputs of the new model are described, and input data file (IDF) examples are given.
Bo Shen, Mark B. Adams, Joshua Ryan New
openaire +1 more source
Journal of Energy in Southern Africa, 2021 Air source heat pump (ASHP) water heaters are efficient devices for sanitary hot water heating. The coefficient of performance (COP) of the air to water heat pump (AWHP) is constantly lower than that of the corresponding ASHP unit. The study focused on determining the COP of both the ASHP unit and the AWHP.
S. Tangwe, K. Kusakana
openaire +4 more sources
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
Research Progress and Prospect of Air Source Heat Pump in Low Temperature Environment
Zhileng xuebao, 2013 Air source heat pump, a high efficiency, energy conservation and environmental protection device, is in prospect of wide application and market value.
Wang Fenghao +3 more
doaj
Sub-hourly simulation of residential ground coupled heat pump systems [PDF]
, 2006 Residential Ground Coupled Heat Pump systems are usually characterised by an ON/OFF behaviour of the heat pump with typical cycling frequencies of 1 - 4 cycles per hour.
Bernier, Michel, Kummert, Michael
core +2 more sources