Results 31 to 40 of about 286,138 (309)

Assessment on the Efficiency of an Active Solar Thermal Facade: Study of the Effect of Dynamic Parameters and Experimental Analysis When Coupled/Uncoupled to a Heat Pump [PDF]

open access: yes, 2020
The building sector presents poor performance in terms of energy efficiency and is looking for effective alternatives aimed at reducing the use of fossil fuels.
Blanco, Jesus Maria   +3 more
core   +2 more sources

Performance Model of General Air Source Heat Pump in a Single Frost/Defrost Cycle

open access: yesZhileng xuebao, 2015
Conventional air source heat pump and no-frost air source heat pump can be categorized as general air source heat pump. The physical characteristics and energy consumption of general air source heat pump system in a frost/defrost cycle is analyzed based ...
Li Ning   +3 more
doaj   +2 more sources

Experimental Study on the Performance of a Household Dual-Source Heat Pump Water Heater

open access: yesEnergies, 2018
A household dual source heat pump water heater is proposed to utilize the energy of wastewater and air heat in a bathroom. The heat pump system integrates a wastewater source heat pump (WSHP), air source heat pump (ASHP), and a preheater.
Xiang Gou   +5 more
doaj   +1 more source

Application and Analysis of a Heat Pump System for Building Heating and Cooling Using Extracting Heat Energy from Untreated Sewage

open access: yesBuildings, 2023
Heat pump technology can extract low-level heat energy from urban sewage to heat or cool buildings, which can alleviate the two major problems of energy shortage and environmental pollution to a certain extent.
Zhaoyi Zhuang   +5 more
doaj   +1 more source

Parametric modelling of domestic air-source heat pumps [PDF]

open access: yesEnergy and Buildings, 2017
A new domestic air-source heat pump model is proposed which can be parameterised either from field data, experimental data or manufacturers’ standard rating data. The model differs from the much more prevalent system-side regression models for these types of heat pumps in that it operates on refrigerant-side variables.
Underwood CP, Royapoor M, Sturm B
openaire   +2 more sources

New Method of Heat Compensation for Defrosting of Air Source Heat Pump System in Winter

open access: yesZhileng xuebao, 2006
Frost removing of air-source heat pump results in shortage of heat output,chilly air flow,and less comfortable interior environment in winter.In our study,a new method to solve the problem of frost-removing in air-source heat pump units was proposed ...
陈超, 欧阳军, 王秀丽, 刘铭
doaj   +2 more sources

Experimental study of an instantaneous-heating air source heat pump water heater with a temperature stratified water tank

open access: yesAdvances in Mechanical Engineering, 2016
An instantaneous-heating air source heat pump water heater with a temperature stratified water tank was put forward. The instantaneous-heating air source heat pump water heater was designed to produce hot water instantly by three modes, namely condenser ...
Mingjing Lei   +3 more
doaj   +1 more source

Investigation of Optimal Heating and Cooling Systems in Residential Buildings [PDF]

open access: yes, 2008
This article compares four heating and cooling systems. The systems are: a high efficiency furnace and electric air conditioner; a ground source heat pump; an absorption air conditioner and direct heating; and a thermally driven heat pump; the last two ...
Bolling, Angela L., Mathias, James A.
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

Performance assessment of tariff-based air source heat pump load shifting in a UK detached dwelling featuring phase change-enhanced buffering [PDF]

open access: yes, 2014
Using a detailed building simulation model, the amount of thermal buffering, with and without phase change material (PCM), needed to time-shift an air source heat pump's operation to off-peak periods, as defined by the UK 'Economy 10' tariff, was ...
Hawkes, Adam D.   +2 more
core   +1 more source

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