Second law evaluation of a lightweight cooling unit

The analysis based on the second law of thermodynamics of a lightweight vapor compression refrigeration system is presented. A small-scale linear compressor was applied in a DC-powered portable cooler for vehicles and for the medical field, using finned-tube heat exchangers and R600-a (Isobutane) as...

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Main Author: Guilherme B. Ribeiro
Format: Article
Language:English
Published: Elsevier 2016-03-01
Series:Case Studies in Thermal Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X16300053
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spelling doaj-54dab7e615fe49e7b8b7e4b5755370152020-11-25T00:12:09ZengElsevierCase Studies in Thermal Engineering2214-157X2016-03-017C475410.1016/j.csite.2016.01.005Second law evaluation of a lightweight cooling unitGuilherme B. RibeiroThe analysis based on the second law of thermodynamics of a lightweight vapor compression refrigeration system is presented. A small-scale linear compressor was applied in a DC-powered portable cooler for vehicles and for the medical field, using finned-tube heat exchangers and R600-a (Isobutane) as the working fluid. The cooler was tested in an environmental chamber (with controlled temperature and humidity) under three different ambient temperatures (21, 25 and 32 °C) in order to measure key parameters of the system, such as cooling capacity, power consumption and internal air temperature. For the comparison of thermodynamic irreversibilities, a conventional vapor compression refrigerating system was also tested under the same ambient conditions. Results indicated that the system with the proposed lightweight system kept the lowest internal air temperature with higher coefficients of performance, showing how a lightweight cooling unit can enlarge the use of refrigerating systems due to its attributes.http://www.sciencedirect.com/science/article/pii/S2214157X16300053RefrigerationSecond lawLightweightCooling unit
collection DOAJ
language English
format Article
sources DOAJ
author Guilherme B. Ribeiro
spellingShingle Guilherme B. Ribeiro
Second law evaluation of a lightweight cooling unit
Case Studies in Thermal Engineering
Refrigeration
Second law
Lightweight
Cooling unit
author_facet Guilherme B. Ribeiro
author_sort Guilherme B. Ribeiro
title Second law evaluation of a lightweight cooling unit
title_short Second law evaluation of a lightweight cooling unit
title_full Second law evaluation of a lightweight cooling unit
title_fullStr Second law evaluation of a lightweight cooling unit
title_full_unstemmed Second law evaluation of a lightweight cooling unit
title_sort second law evaluation of a lightweight cooling unit
publisher Elsevier
series Case Studies in Thermal Engineering
issn 2214-157X
publishDate 2016-03-01
description The analysis based on the second law of thermodynamics of a lightweight vapor compression refrigeration system is presented. A small-scale linear compressor was applied in a DC-powered portable cooler for vehicles and for the medical field, using finned-tube heat exchangers and R600-a (Isobutane) as the working fluid. The cooler was tested in an environmental chamber (with controlled temperature and humidity) under three different ambient temperatures (21, 25 and 32 °C) in order to measure key parameters of the system, such as cooling capacity, power consumption and internal air temperature. For the comparison of thermodynamic irreversibilities, a conventional vapor compression refrigerating system was also tested under the same ambient conditions. Results indicated that the system with the proposed lightweight system kept the lowest internal air temperature with higher coefficients of performance, showing how a lightweight cooling unit can enlarge the use of refrigerating systems due to its attributes.
topic Refrigeration
Second law
Lightweight
Cooling unit
url http://www.sciencedirect.com/science/article/pii/S2214157X16300053
work_keys_str_mv AT guilhermebribeiro secondlawevaluationofalightweightcoolingunit
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