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Assessing the performance and cost-competitiveness of a dual-source solar assisted heat pump in cold climates [PDF]

open access: yesE3S Web of Conferences, 2021
In many cold climates, the coincidence of long heating seasons as well as relatively high levels of solar insolation offer an opportunity to explore the potential for solar-assisted air source heat pumps to meet greenhouse gas reduction objectives for ...
Sager Jeremy, Poirier Jean-Philippe
doaj   +1 more source

Assessment of two-level heat pump installations’ power efficiency for heat supply systems

open access: yesTrudy 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.
Алла Євсеївна Денисова   +1 more
doaj   +7 more sources

Low to very high temperature thermal energy recycling – 3 case studies [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper we present three case studies of the installation of a stirling-cycle high temperature heat pump applied to recycling thermal energy including steam generation.
Høeg Arne, Tveit Tor-Martin
doaj   +1 more source

Features of modeling a highly efficient multistage vapor compression heat pump unit

open access: yesRUDN Journal of Engineering Research, 2021
The increase in the cost of fuel and energy resource and the deterioration of the environment from the combustion of traditional fossil fuel, have led to a great interest in energy-saving technology by using secondary energy resources in the thermal ...
Yuri A. Antipov   +6 more
doaj   +1 more source

Optimising integrated heat spreaders with distributed heat transfer coefficients: A case study for CPU cooling

open access: yesCase Studies in Thermal Engineering, 2022
Increasing power densities of modern CPUs has led to regions of high temperature on the semiconductor die which can lead to performance and reliability problems.
J.W. Elliott, M.T. Lebon, A.J. Robinson
doaj   +1 more source

Long-Term Performance Measurement and Analysis of a Small-Scale Ground Source Heat Pump System

open access: yesEnergies, 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

Temperature field model in surface grinding: a comparative assessment

open access: yesInternational Journal of Extreme Manufacturing, 2023
Grinding is a crucial process in machining workpieces because it plays a vital role in achieving the desired precision and surface quality. However, a significant technical challenge in grinding is the potential increase in temperature due to high ...
Min Yang   +12 more
doaj   +1 more source

Genesis and occurrence models of hot-dry geothermal resources in Guangxi

open access: yes地质科技通报, 2022
As a kind of clean and renewable geothermal resource, dry hot rock (HDR) contains a huge potential for geothermal energy, which is of great development prospect and research value.
Minghang Sun   +9 more
doaj   +1 more source

The Design of Façade-Integrated Vertical Greenery to Mitigate the Impacts of Extreme Weather: A Case Study from Hong Kong

open access: yesBuildings, 2023
Vertical greenery not only helps to cool the surfaces of buildings but, more importantly, it can also mitigate the Urban Heat Island effect. The growth of vertical greenery is highly dependent on ongoing maintenance, such as irrigation.
Changying Xiang, Lulu Tao
doaj   +1 more source

Prediction of Terrestrial Heat Flow in Songliao Basin Based on Deep Neural Network

open access: yesEarth and Space Science, 2023
Heat flow is a geothermal parameter for indicating the heat source distribution and evaluating geothermal reservoirs. Only 1,230 heat flow points are distributed unevenly in China, mainly concentrated in high‐temperature geothermal and southeast regions.
Lige Bai   +3 more
doaj   +1 more source

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