Performance of the domestic micro ORC equipped with the shell-and-tube condenser with minichannels

Wajs, Jan; Mikielewicz, Dariusz; Jakubowska, Blanka

doi:10.1016/j.energy.2018.05.174

Cited by 36 publications

(18 citation statements)

References 22 publications

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“…In the authors' opinion, the proposed method to calculate the heat transfer coefficient is a reliable tool in engineering calculations. An example of an application can be found in [54][55][56].…”

Section: Discussionmentioning

confidence: 99%

An improved method for flow boiling heat transfer with account of the reduced pressure effect

Jakubowska

Mikielewicz

2019

Therm sci

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Original scientific paper https://doi.org/10.2298/TSCI19S4261JIn the paper are presented the results using the authors own model to predict heat transfer coefficient during flow boiling. The model has been tested against a large selection of experimental data to investigate the sensitivity of the in-house developed model. In the work are presented the results of calculations obtained using the semi-empirical model on selected experimental flow boiling data of the refrigerants: R134a, R1234yf, R600a, R290, NH 3 , CO 2 , R236fa, R245fa, R152a, and HFE7000. In the present study, particular attention was focused on the influence of reduced pressure on the predictions of the theoretical model. The main purpose of this paper is to show the effect of the reduced pressure on the predictions of heat transfer during flow boiling.

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Section: Discussionmentioning

confidence: 99%

An improved method for flow boiling heat transfer with account of the reduced pressure effect

Jakubowska

Mikielewicz

2019

Therm sci

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“…In authors' opinion, the proposed method to calculate the heat transfer coefficient is a reliable tool in engineering calculations e.g. designing heat exchangers [50,51].…”

Section: Discussionmentioning

confidence: 99%

Comparison of predictive methods for flow boiling heat transfer in conventional channels and minichannels – the effect of reduced pressure

Mikielewicz

Jakubowska

2018

MATEC Web Conf.

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In the paper are presented the results of follow on studies from [1]–[3] using authors own model to predict heat transfer coefficient during flow boiling. The model has been tested against a large selection of experimental data collected from various researchers to investigate the sensitivity of the in-house developed model. The collected experimental data came from various studies from literature and were conducted for the full range of quality variation and a wide range of mass velocity and saturation temperatures. In the work are presented the results of calculations obtained using the in-house developed semi empirical model on selected experimental flow boiling data of the refrigerants: R134a, R1234yf, R600a, R290, NH3, CO2, R236fa, R245fa, R152a and HFE7000. In the present study the particular attention was focused on the influence of reduced pressure on the predictions of the theoretical model. The results of calculations were to test the sensitivity of the flow boiling model with respect to selection of the appropriate two-phase flow multiplier, which is one of the distinctive elements of the in-house model. The main purpose of this paper however is to show the effect of the reduced pressure on the predictions of heat transfer during flow boiling.

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“…Outdoor condensing boiler is known, equipped with hydro-thermally insulated casing. The invention increases the efficiency of the boiler during a power outage, but has drawbacks -the impossibility to use the boiler for industrial purposes, as well as the high specific cost of heat generation [15][16][17]. Wall condensing boiler Logomax plus GB172i is known.…”

Section: Comparison With Analoguesmentioning

confidence: 99%

Environmentally Friendly Organic Rankine Cycle Technology Based on Improved Absorption Refrigerating Machine

Осинцев¹,

Дудкин²,

Prikhodko³

et al. 2019

Proceedings of the VIII Science and Technology Conference “Contemporary Issues of Geology, Geophysics and Geo-Ecology of the No

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The purpose of the work is the development of environmentally friendly technology of heat recovery from condensation of water vapor at a constant partial pressure of the outgoing flue gases in contact heat exchangers with a passive nozzle at thermal power plants running on natural gas, and the use of solar heaters in the block structure of an absorption refrigerating machine. Using contact heat exchangers can reduce greenhouse gas emissions. Greenhouse gas is harmful to the environment. Using solar heaters can improve the efficiency of the Li-Br absorption refrigerating machine. Ways to improve the efficiency of industrial enterprises are different. One of the main ways is to use renewable energy for heat recovery. In addition, the use of renewable energy sources reduces emissions of harmful greenhouse gases into the atmosphere.

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Performance of the domestic micro ORC equipped with the shell-and-tube condenser with minichannels

Cited by 36 publications

References 22 publications

An improved method for flow boiling heat transfer with account of the reduced pressure effect

An improved method for flow boiling heat transfer with account of the reduced pressure effect

Comparison of predictive methods for flow boiling heat transfer in conventional channels and minichannels – the effect of reduced pressure

Environmentally Friendly Organic Rankine Cycle Technology Based on Improved Absorption Refrigerating Machine

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