Optimum heat exchanger area estimation using coefficients of structural bonds: Application to an absorption chiller

Gebreslassie, Berhane H.; Medrano, Marc; Mendes, Filipe; Boer, Dieter

doi:10.1016/j.ijrefrig.2009.12.004

Cited by 27 publications

(9 citation statements)

References 12 publications

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“…For the space with large net height, the metal halide lamp with less power of single lamp can be used. The guiding light and emergency lighting in the subway station can choose LED light source with higher luminous efficiency [8] .…”

Section: Energy-saving Technology For Lighting Systemsmentioning

confidence: 99%

Discussion of Energy Saving Technique Scheme for Rail Electromechanical Equipment System

Yue¹,

Wu²

2018

Proceedings of the 8th International Conference on Management and Computer Science (ICMCS 2018)

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Due to the growing energy shortage and the sustained rapid growth of the national economy, energy conservation has become one of the most concerned issues in the society. Rail transit is a large energy consumer with great energy saving potential. This paper analyzes the electrical load and energy usage characteristics of rail transit. This paper reviews the energy-saving technologies of electromechanical equipment systems and discusses the application of renewable energy in rail transit. The research results can guide the design, construction and operation of rail transit in China, reduce the overall energy consumption of rail transit and reduce expenditure.

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Section: Energy-saving Technology For Lighting Systemsmentioning

confidence: 99%

Discussion of Energy Saving Technique Scheme for Rail Electromechanical Equipment System

Yue¹,

Wu²

2018

Proceedings of the 8th International Conference on Management and Computer Science (ICMCS 2018)

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“…First set is experimental results for a commercial solar driven unit (chilli ® PSC 10 from SolarNext Company) published in [27]. Second one results from an experimental study conducted by Mendes and Pereira [28] and reported in [29]. Comparison between several key values computed by the model and those published in the cited references is presented in Table 1.…”

Section: Model Validationmentioning

confidence: 99%

Comprehensive Parametric Study of a Solar Absorption Refrigeration System to Lower Its Cut In/Off Temperature

Mohammed

Yanling

2017

Energies

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Solar-driven ammonia-water absorption refrigeration system (AARS) has been considered as an alternative for the conventional refrigeration and air-conditioning systems. However, its high initial cost seems to be the main problem that postpones its wide spread use. In the present study, a single-stage NH 3 /H 2 O ARS is analyzed in depth on the basis of energetic and exergetic coefficients of performance (COP and ECOP, respectively) to decrease its cut in/off temperature. This study was carried out to lower the required heat source temperature, so that a less-expensive solar collector could be used. Effects of all parameters that could influence the system's performance and cut in/off temperature were investigated in detail. Presence of water in the refrigerant and evaporator temperature glide was considered. Results revealed that appropriate selection of system's working condition can effectively reduce the driving temperature. Besides, the cut in/off temperature can be significantly decreased by inserting an effective solution heat exchanger (SHX). Required driving temperature can be lowered by up to 10 • C using SHX with 0.80 effectiveness. The results also showed that effects of water content in the refrigerant could not be neglected in studying NH 3 /H 2 O ARS because it affects both COP and ECOP. Additionally, a large temperature glide in the evaporator can substantially decrease the ECOP.

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“…At the base condition, annual time of operation of system is assumed to be 5000 h. The local optimum point is shifted to 24.2°C when time of operation per year is increased from 5000 h to 6000 h [45] as depicted in Fig. 7(a).…”

Section: Effect Of Cascade Condenser Temperaturementioning

confidence: 99%

“…The capital recovery factor is calculated to be 0.19 corresponding to interest rate of 15% and system life of 10 years (base case). But the literature on refrigeration system reveals that the interest rate varies from 3.5% to 15% [20,38,41,45] and systems are designed for life time of 10-20 years [20,24,45,46]. Interesting results are obtained when capital recovery factor is reduced to 0.08 (interest rate decrease to 3.5% and life time increases to 15 years).…”

Section: Effect Of Cascade Condenser Temperaturementioning

confidence: 99%

NLP model based thermoeconomic optimization of vapor compression–absorption cascaded refrigeration system

Jain

Sachdeva

Kachhwaha

2015

Energy Conversion and Management

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Optimum heat exchanger area estimation using coefficients of structural bonds: Application to an absorption chiller

Cited by 27 publications

References 12 publications

Discussion of Energy Saving Technique Scheme for Rail Electromechanical Equipment System

Discussion of Energy Saving Technique Scheme for Rail Electromechanical Equipment System

Comprehensive Parametric Study of a Solar Absorption Refrigeration System to Lower Its Cut In/Off Temperature

NLP model based thermoeconomic optimization of vapor compression–absorption cascaded refrigeration system

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