Results 11 to 20 of about 166,956,813 (251)

Analysis of retrofit air source heat pump performance : results from detailed simulations and comparison to field trial data [PDF]

open access: yes, 2011
In the UK, gas boilers are the predominant energy source for heating in housing, due primarily to the ready availability of natural gas. The take-up of heat pumps has lagged far behind Europe and North America.
Kelly, N.J., Cockroft, J.
core   +4 more sources

Flow patterns and heat transfer for flow boiling in small to micro diameter tubes [PDF]

open access: yes, 2008
An overview of the recent developments in the study of flow patterns and boiling heat transfer in small to micro diameter tubes is presented. The latest results of a long-term study of flow boiling of R134a in five vertical stainless steel tubes of ...
Karayiannis, TG   +3 more
core   +6 more sources

Ground-source heat pumps and underground thermal energy storage: energy for the future [PDF]

open access: yes, 2008
We need energy for space heating—but in most cases not where or when energy sources are available. Energy storage, which helps match energy supply and demand, has been practised for centuries, also in Norway.
Banks, D.   +4 more
core   +9 more sources

TWO-STAGE HEAT PUMPS FOR ENERGY SAVING TECHNOLOGIES

open access: yesHolodilʹnaâ Tehnika i Tehnologiâ, 2017
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.
A. E. Denysova   +3 more
doaj   +1 more source

Ground-Source Heat Pumps with Horizontal Heat Exchangers for Space Cooling in the Hot Tropical Climate of Thailand

open access: yesEnergies, 2019
The cooling of spaces in tropical regions, such as Southeast Asia, consumes a lot of energy. Additionally, rapid population and economic growth are resulting in an increasing demand for space cooling.
Arif Widiatmojo   +6 more
doaj   +1 more source

Integration of Desalination Systems to Low Grade Heat Source in Site Utility

open access: yesChemical Engineering Transactions, 2012
Conventional desalination technologies are energy intensive and if the required energy hails from fossil fuel source, then the freshwater production will contribute to carbon dioxide emission and consequently global warming.
H. Ghalami   +3 more
doaj   +1 more source

Geothermal power based ULTDH for cooling and heating purposes [PDF]

open access: yesE3S Web of Conferences, 2019
Ultra-low temperature district heating systems facilitate use of waste and renewable heat sources. The article presents a possible scheme of operation and optimisation of small ultra-low temperature district heating system consisting of waste heat source,
Ciapała Bartłomiej, Janowski Mirosław
doaj   +1 more source

Thermal quadrupole method with internal heat sources [PDF]

open access: yes, 2012
A new method based on the thermal quadrupoles technique for heat transfer modelling in multilayered slabs with heat sources is proposed. Classical thermal quadrupoles use hyperbolic functions and numerical problems occur according to the argument value ...
A. Kusiak   +21 more
core   +1 more source

Design and analysis of a novel dual source vapor injection heat pump using exhaust and ambient air

open access: yesEnergy and Built Environment, 2022
A novel dual source vapor injection heat pump (DSVIHP) using exhaust and ambient air is proposed. The air exhausted from the building first releases energy to the medium-pressure evaporator and is then mixed with the ambient air to heat the low-pressure ...
Jing Li   +7 more
doaj   +1 more source

Energy from Waste: Reuse of Compost Heat as a Source of Renewable Energy [PDF]

open access: yes, 2010
An in-vessel tunnel composting facility in Scotland was used to investigate the potential for collection and reuse of compost heat as a source of renewable energy.
E. R. Lamont   +5 more
core   +1 more source

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