Results 21 to 30 of about 3,003 (225)

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

Solar RRL, Volume 6, Issue 8, August 2022., 2022
Solar‐assisted heat pumps have the potential to increase the share of renewables in the energy systems and the flexibility of smart grids. An assessment covering technical, economic, and social aspects is given to allow a holistic overview on the application of such systems.
Valeria Palomba, Giuseppe E. Dino, Andrea Frazzica   +2 more
wiley   +1 more source

Performance analysis and working fluid selection for geothermal energy-powered organic Rankine-vapor compression air conditioning [PDF]

, 2013
BackgroundTo utilize geothermal energy from hot springs, an organic Rankine cycle/vapor compression cycle (ORC/VCC) system was employed for air conditioning and a thermodynamic model was developed.MethodsSix working fluids, R123, R134a, R245fa, R600a ...
Bu,Xianbiao, Li,Huashan, Wang,Lingbao
core   +1 more source

ВЛИЯНИЕ ПРИМЕСЕЙ КОМПРЕССОРНОГО МАСЛА/НАНОЧАСТИЦ TiO2 В ХЛАДАГЕНТЕ НА КОЭФФИЦИЕНТ ТЕПЛООТДАЧИ ПРИ КИПЕНИИ В ГОРИЗОНТАЛЬНОЙ ТРУБЕ

Holodilʹnaâ Tehnika i Tehnologiâ, 2015
В работе представлены результаты комплексного экспериментального и теоретического исследования влияния примесей масла и наночастиц TiO2 в изобутане на локальные коэффициенты теплоотдачи при кипении рабочего тела в трубе.
Н.Н. Лукьянов, А.В. Мельник, В.П. Железный, О.Я. Хлиева, А.С. Мороз   +4 more
doaj   +1 more source

Thermodynamic screening of alternative refrigerants for R290 and R600a

Results in Engineering, 2020
Due to Regulation EU 517/2014 (F-Gas), the use of refrigerants with GWP higher than 150 was limited from 2015 on in small capacity refrigeration systems in Europe. Although refrigerants that dominate are R600a and R290 nowadays, which are classified as A3 by ASHRAE 34, literature points out that some refrigerant mixtures exist that could offer benefits
Daniel Calleja-Anta, Laura Nebot-Andrés, Jesús Catalán-Gil, Daniel Sánchez, Ramón Cabello, Rodrigo Llopis   +5 more
openaire   +3 more sources

Tek Fazlı R600a Soğutkan Akışı İçin Mikrokanal Eşanjörün Matematiksel Modellemesi

Politeknik Dergisi, 2021
Bu çalışmada, özellikle iklimlendirme sistemlerinde ön ısıtma/soğutma, aşırı kızdırma/soğutma gibi tek fazlı soğutkan akışının olduğu uygulamalar için mikrokanal eşanjörlerin matematiksel modellemesi deneysel doğrulamalı olarak ele alınmıştır. Çalışma akışkanının R600a olduğu panjurlu kanatlı mikrokanal eşanjörler için R600a’nın çıkış sıcaklığını ...
Anıl BAŞARAN, Ali YURDDAŞ
openaire   +2 more sources

A COMPARATIVE STUDY ON THE PERFORMANCE OF THE DOMESTIC REFRIGERATOR USINGR600A AND LPG WITH VARYING REFRIGERANT CHARGE AND CAPILLARY TUBE LENGTH [PDF]

, 2017
A comparative experimental study on the performance of a domestic refrigerator using R600A and LPG with a varying refrigerant charge (wr) and capillary tube length (L) was carried out.
Ajayi, O. O., Babalola, P.O., Babarinde, T.O., Fagbenle, R. O., Kilanko, O. O, Lawson-Jack, D, Leramo, R.O., Odunfa, K. M., Ohunakin, O.S., Oyedepo, Sunday Olayinka, Oyegbile, A.D   +10 more
core   +1 more source

Flow boiling heat transfer of R134a and low GWP refrigerants in a horizontal micro-scale channel [PDF]

, 2017
The present paper presents an investigation of the effects of the refrigerant type on the heat transfer coefficient during flow boiling inside micro-scale channels.
Abernethy, Anwar, Basu, Bertsch, Blasius, Calm, Chen, Choi, Chávez, Cioncolini, Copetti, Costa-Patry, Daniel Felipe Sempértegui-Tapia, de Oliveira, Del Col, Del Col, Dittus, Gherhardt Ribatski, Gnielinski, Gungor, Huang, Kalani, Kandlikar, Kanizawa, Kanizawa, Kew, Kim, Kim, Lazarek, Li, Li, Liu, Mahmoud, Mortada, Mota-Babiloni, Müller-Steinhagen, Oh, Oh, Saitoh, Saitoh, Sempértegui-Tapia, Sempértegui-Tapia, Siegel, Stephan, Sun, Taylor, Thome, Tibiriçá, Tibiriçá, Tibiriçá, Tran, Warrier, Zhang, Zivi   +53 more
core   +1 more source

Energy Performance Analysis of a Solar Refrigerator Using Ecological Refrigerants

Journal of Sustainable Development of Energy, Water and Environment Systems, 2023
The development of sustainable energy technologies must be a priority given the rising global energy demand and global warming gases emission. In this work, the energy evaluation of a small-capacity direct-current refrigerator with internal heat exchange
Carlos Amaris, Fabian Barbosa, Milen Balbis   +2 more
doaj   +1 more source

Utilizing the heat of flue gases of the boiler room by using the organic Renkine cycle [PDF]

, 2018
Визначається доцільність впровадження на водогрійній котельні з котлами ПТВМ-100, що спалюють природний газ, утилізаційної електрогенеруючої установки. Остання побудована на базі органічного циклу Ренкіна та обігрівається димовими газами котлів. Показано,
Шубенко, Олександр Леонідович, Маляренко, Віталій Андрійович, Сенецький, Олександр Володимирович, Бабак, Микола Юрійович   +3 more
core   +3 more sources

Experimental study of R290/R600a mixtures in vapor compression refrigeration system

International Journal of Refrigeration, 2022
Abstract This paper presents an experimental investigation of the effect of R290/R600a refrigerant mixtures on the performance of variable speed hermetic compressors used in household refrigeration. In this context, a small-capacity compressor test stand is introduced and four different compositions of R290/R600a mixtures are studied in detail.
Mustafa Ozsipahi, Haluk Anil Kose, Husnu Kerpicci, Hasan Gunes   +3 more
openaire   +2 more sources