An experimental and numerical study of refrigerator heat leakage at the gasket region

Gao, Feng; Naini, Shervin Shoai; Wagner, John R.; Miller, Richard S.

doi:10.1016/j.ijrefrig.2016.09.002

Cited by 27 publications

(6 citation statements)

References 18 publications

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“…Inefficiencies include air gaps where the seal is not well formed, heat conduction through the plastic and metal, and over time damaged or stressed areas of the seals can fail. Also Gao et al (2017) investigated the total effective heat leakage at the refrigerator gasket with the average effective heat leakage at the door gasket region estimated to be 0.2 W/m.K, which corresponded to 14% and 17% of the total energy used by the fresh food and freezer compartments respectively.…”

Section: Technical Featuresmentioning

confidence: 99%

Temperature and energy performance of domestic cold appliances in households in England

Biglia

Gemmell

Foster

et al. 2018

International Journal of Refrigeration

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Highlights Temperatures and energy consumed by 998 cold appliances in households are reported. Mean refrigerator temperature was 5.3°C; the mean freezer temperature was -20.3°C. Mean electricity consumption was 354 kWh per year. Differences between cold appliance types were determined from statistical analysis. AbstractThis paper reports the results of a large-scale survey in which 998 cold appliances were monitored in 766 properties in England. No surveys published to date analyse such a large dataset, which includes data on ambient temperature, cold appliance temperature (refrigerator and/or freezer) and electricity consumption of the cold appliance. Simultaneous measurements of the temperature inside and outside of the cold appliances and the electricity consumption were taken over a period of seven days during a ninemonth period in 2015. An interview was also conducted with the householders to collect further information about the cold appliances and their usage patterns. The cold appliances monitored in the work included fridge-freezers (52%), refrigerators with ice-box (6%), larder fridges (14%), chest freezers (9%) and upright freezers (19%). It was found that for all monitored cold appliances with valid data that: the mean ambient temperature was 18.5°C; the mean refrigerator temperature was 5.3°C; the mean freezer temperature was -20.3°C; and the mean electricity consumption was 354 kWh per year. Significant differences between the electricity consumption of different types of cold appliance were determined from statistical analysis.

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Section: Technical Featuresmentioning

confidence: 99%

Temperature and energy performance of domestic cold appliances in households in England

Biglia

Gemmell

Foster

et al. 2018

International Journal of Refrigeration

View full text Add to dashboard Cite

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“…To qualitatively and quantitatively analyse aerosol transport, computational fluid dynamics (CFD) with experimental validation can be a very effective approach as numerous literatures have shown. [14][15][16][17][18][19][20][21][22][23][24] Unlike experiments, numerical simulation has a lower cost and less time-consuming advantages, especially for conducting a parametric study of changing boundary conditions, operating conditions, material properties, etc. In short, a properly defined CFD model can be an effective tool to study such an aerosol transport problem with phase change in good agreement with experimental data, as reported in literatures.…”

Section: Introductionmentioning

confidence: 99%

Transport and trajectory of cough-induced bimodal aerosol in an air-conditioned space

Zhang

Guo

Zhu

et al. 2020

Indoor and Built Environment

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Aerosol generated from a human cough can be a potential major indoor health risk due to the possible transmission of infectious respiratory diseases to surrounding individuals within the same room and even could spread out via air-ventilation/conditioning systems. This study aims to investigate the transport characteristics and trajectory of coughed aerosols under the influence of conditioned air ventilation as well as near-by human breathing zone using computational fluid dynamics (CFD). An experimental system consisting of air-conditioned space with multiple inlets and outlets, a cough simulator and a receiver was built to validate the CFD predictions. The comparison is in good agreement. The CFD model was established as a transient three-dimensional multiphase multicomponent Eulerian–Lagrangian model and numerically solved using commercial software ANSYS Fluent. Both gas and liquid phases were modelled as multicomponent mixtures. With this CFD model, the indoor transport and trajectory of coughed aerosols can be accounted for the distributions of portions inhaled by each manikin, deposited on surfaces of manikins and chamber walls, as well as recirculated back into the ventilation system. Results reveal that the aerosol source location and the ambient air movement can be crucial factors of aerosol trajectory in terms of direct and indirect influence.

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“…a given cost, in this case using a single panel thickness for each compartment, but including the design parameters of the rest of the system. These studies have been also completed by the analysis of the heat leakage through the gasket region [8,9], confirming its relative low share of the total heat gains (13% to 17%), thus the dominant role of the insulation.…”

Section: Accepted Manuscriptmentioning

confidence: 79%

A simple optimization approach for the insulation thickness distribution in household refrigerators

Trias

Oliet

Rigola

et al. 2018

International Journal of Refrigeration

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An experimental and numerical study of refrigerator heat leakage at the gasket region

Cited by 27 publications

References 18 publications

Temperature and energy performance of domestic cold appliances in households in England

Temperature and energy performance of domestic cold appliances in households in England

Transport and trajectory of cough-induced bimodal aerosol in an air-conditioned space

A simple optimization approach for the insulation thickness distribution in household refrigerators

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