Results 61 to 70 of about 284,728 (216)

Performance analysis of air source heat pumps using detailed simulations and comparison to field trial data [PDF]

open access: yes, 2010
The take-up of heat pump technologies in the UK domestic sector has lagged far behind other countries in Europe and North America due primarily to the ready availability of cheap natural gas; this has led to the predominance of gas central heating ...
Cockroft, J., Ghauri, S., Kelly, N.J.
core  

Experimental study of an air-source heat pump for simultaneous heating and cooling - Part 2: Dynamic behaviour and two-phase thermosiphon defrosting technique

open access: yes, 2011
International audienceThis article presents the concepts of an air-source Heat Pump for Simultaneous heating and cooling (HPS) designed for hotels and smaller residential, commercial and office buildings in which simultaneous needs in heating and cooling
Byrne, Paul   +2 more
core   +3 more sources

Development of concepts for a zero-fossil-energy greenhouse [PDF]

open access: yes, 2008
Dutch government and greenhouse horticultural practice aim for strongly reduced fossil energy use and of environmental loads in 2010 and energy neutral greenhouses in 2020.
Bot, G.P.A.   +4 more
core   +2 more sources

Analysis of Heat Pumps Efficiency in Selected Locations – A Case Study

open access: yesEnvironmental and Climate Technologies, 2022
Heat pumps are increasingly popular in individual buildings and could help to meet expectations of ambitious energy-environmental European goals until 2050.
Ołtarzewska Agata, Krawczyk Dorota Anna
doaj   +1 more source

Optimization of solar-air source heat pump hybrid heating system

open access: yesJournal of Physics: Conference Series
Abstract In order to construct a versatile, complementary, low-carbon, clean, and efficient heating system, this study explores the potential of a solar-air source heat pump (SAHP) hybrid heating system. A simulation model is established in TRNSYS, and the particle swarm algorithm (PSO) and genetic algorithm (GA) from GENOPT and MATLAB ...
Yuxin Zhang, Xiaoping Tang, Dongmei Ji
openaire   +1 more source

Design of a space heating system with an air-water heat pump and bivalent heat source [PDF]

open access: yes, 2015
Práce řeší kompletní rekonstrukci otopné soustavy, tj. včetně zdroje tepla, rozvodů a otopných těles, rodinného domu s vyššími tepelnými ztrátami. Jako zdroj tepla je zvoleno tepelné čerpadlo vzduch-voda.
Skočík, Lukáš
core  

Investigation on thermal-hydraulic performance of outdoor heat exchanger in air sources heat pump [PDF]

open access: yes, 2017
A plethora of findings exists on the decreasing heat transfer performance of ASHP under frosting condition. This study investigates, using field and laboratory experiments, the frosting behavior and heat transfer performance of fin-tube exchangers ...
Chen, Y   +4 more
core   +2 more sources

Division of Outdoor Nominal Condition of Air Source Heat Pumps in China

open access: yesZhileng xuebao, 2019
Air source heat pump,as an important heating and air-conditioning equipment, is widely used in various types of buildings in China.The different climate and building load characteristics within different zones create a gap between the demand for ...
Shi Wenxing, Yang Zixu, Wang Baolong
doaj  

Field Measurement and Data-Driven Modeling of a Photovoltaic/Thermal and Air-Source Dual-Source Heat Pump System in Dalian, China

open access: yesBuildings
Dual-source heat pump systems combining photovoltaic-thermal (PVT) and air-source technologies have attracted considerable research interest due to their energy complementarity.
Xin Jia   +7 more
doaj   +1 more source

Design of a CO2 heat pump drier with dynamic modelling tools [PDF]

open access: yes, 2019
Drying is an energy and time intensive process which thermal energy demand is mostly provided by fossil resources. Especially in the food processing industry it is important to increase the energy efficiency of drying processes in terms of organic ...
Bantle, M.   +4 more
core   +1 more source

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