Results 21 to 30 of about 12,550 (263)

Ground as a source of heat for heat pumps

open access: yesJournal of Mechanical and Energy Engineering, 2018
Heat pumps are an ideal solution for use in newly built passive and energy-plus buildings. One of the many problems present in such construction is the choice of the operational parameters of the lower heat source and the selection of a ground regeneration system which would enable effective regeneration in a short period of time and at a minimal cost.
openaire   +2 more sources

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

Perfection of an Energy-Economic and Environmental Parameters of the Ground Source Heat Pump Systems with Preventing Freezing of the Soil around Ground Pipes [PDF]

open access: yesProblems of the Regional Energetics
This article is devoted to the methods for perfection of energy, economic factors, environmental factors and work modes of the ground source heat pump systems with the account of climate conditions.
Dnisova A.E.   +3 more
doaj   +1 more source

Renovation Results of Finnish Single-Family Renovation Subsidies: Oil Boiler Replacement with Heat Pumps

open access: yesEnergies, 2022
Finland has approximately 150,000 oil-heated private homes. In 2020, the Finnish government launched subsidies for private homeowner energy renovations.
Paula Sankelo   +3 more
doaj   +1 more source

Coefficient of Performance Stabilisation in Ground Source Heat Pump Systems

open access: yesJournal of Sustainable Development of Energy, Water and Environment Systems, 2017
The number of installations with ground source heat pumps is steadily increasing. As they involve high investment costs, they require deliberate action and analysis.
Jerzy Wołoszyn, Andrzej Gołaś
doaj   +1 more source

Numerical simulations on potential application of ground source heat pumps with vertical ground heat exchangers in Bangkok and Hanoi

open access: yesEnergy Reports, 2021
Southeast Asian countries have experienced fast economic growth for several decades. This rapid growth has been accompanied by an increased energy demand per capita. Ground source heat pumps could be a solution to improve energy efficiency.
Arif Widiatmojo   +8 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Carbon Dioxide Emissions from a Ground Heat Pump for a Detached House

open access: yesProceedings, 2019
Inasmuch as the European Union promotes only energetically viable heat pumps in a given location, the aim of the work is an assessment of whether a ground-to-water heat pump (ground source heat pump: GSHP) can be considered as an ecological heat ...
Sara Sewastianik, Andrzej Gajewski
doaj   +1 more source

Multi-Objective Optimization Research on the Integration of Renewable Energy HVAC Systems Based on TRNSYS

open access: yesBuildings, 2023
Well-designed passive buildings can drastically reduce building energy consumption, and optimal design of air conditioning systems is the key to achieving low operating energy consumption in near-zero energy buildings.
Qiang Si   +4 more
doaj   +1 more source

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