Results 61 to 70 of about 2,942 (221)

Performance and Economic Analysis of Two Types of High-Temperature Heat Pump Based on New Refrigerants

Applied Sciences
This paper proposes, for the first time, the research concept of comparing energy and economy between transcritical cycle high-temperature heat pumps and subcritical cycle high-temperature heat pumps with new refrigerants. Experiments and simulations are
Dahan Sun, Jiang Qin, Zhongyan Liu
doaj   +1 more source

Simulation study of a heat pump for simultaneous heating and cooling coupled to buildings [PDF]

, 2014
International audienceIn several situations, a heat pump for simultaneous heating and cooling (HPS) can be installed advantageously in buildings where simultaneous needs occur. Unlike a reversible heat pump that works alternatively in heating or cooling,
Bazantay, Frederic, Byrne, Paul, Ghoubali, Redouane, Miriel, Jacques   +3 more
core   +3 more sources

Sustainable Thermal Solutions: Enhancing Heat Transfer with Turbulators and Nanofluids

Advanced Energy and Sustainability Research, Volume 6, Issue 5, May 2025.
Nanofluids, which are nanoparticle suspensions in base fluid, facilitate heat transmission due to their improved thermal conductivity. Turbulators, which are inserts into fluid flow channels, disturb the flow, increasing turbulence and hence the heat transfer rate.
Zafar Said, Aggrey Mwesigye, Lingala Syam Sundar, Arun Kumar Tiwari, Kalidasan Balasubramanian, Hafiz Muhammad Ali, Evangelos Bellos, Chaerin Gim, Mohammad Shamsuddin Ahmed, Jang‐Yeon Hwang   +9 more
wiley   +1 more source

A generalised assessment of working fluids and radial turbines for organic Rankine cycles [PDF]

, 2018
The aim of this paper is to conduct a generalised assessment of both optimal working fluids and radial turbine designs for small-scale organic Rankine cycle (ORC) systems across a range of heat-source temperatures.
Sayma, A. I., White, M.
core   +2 more sources

Thermodynamic Performance of a Novel Compressed Carbon Dioxide Energy Storage System Based on Guanidinium Sulfate (Gua2SO)4) Adsorption

Energy Science &Engineering, Volume 13, Issue 3, Page 1132-1145, March 2025.
ABSTRACT In recent years, energy storage technology has developed rapidly with the aim to promote the development of renewable energy sources and establish a green and sustainable energy structure. A novel compressed CO2 energy storage system based on Gua2SO4 adsorption is proposed in this study.
Jiaxin Liu, Zhan Liu
wiley   +1 more source

State of Art on ORC Applications for Waste Heat Recovery and Micro-cogeneration for Installations up to 100kWe [PDF]

, 1976
The growing cost for energy production and distribution as well as problems related to environmental pollution have induced an increasing interest in the research of alternative solutions and in particular innovative technologies capable of compromising ...
Obi, John Besong
core   +1 more source

Performance Investigation of a Cabin Thermal Management System for Electric Vehicles Based on R290 Refrigerant

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
Electric vehicle (EV) thermal management systems (TMSs) face a critical challenge in adopting environmentally friendly refrigerants, essential for adaptability, thermal safety, driving range optimization, and passenger comfort across wide temperature ranges.
Jiahao Zhao, Zihao Luo, Yifei Zhang, Abubakar Unguwanrimi Yakubu, Xuanhong Ye, Qi Jiang, Shusheng Xiong, Chenbo Xia, Geng Chen   +8 more
wiley   +1 more source

Theoretical analysis of R1234yf and R1234yf/R125 mixture as replacement of R134a in vapor compression system

International Journal of Low-Carbon Technologies
Abstract In this article, in order to reduce the climate hazards caused by global warming, a new environmentally friendly mixed refrigerant, R1234yf/R125 (with a mass ratio of 95:5), is introduced. Alongside R1234yf, the article conducts theoretical research to assess the feasibility of substituting R134a in vapor compression systems ...
Yongmei Lin, Zhaofeng Meng, Ziheng Huo, Chuangchuang Ding, Song Wang, Longji Wang   +5 more
openaire   +1 more source

New Eco-gas mixtures for the Extreme Energy Events MRPCs: results and plans

, 2019
The Extreme Energy Events observatory is an extended muon telescope array, covering more than 10 degrees both in latitude and longitude. Its 59 muon telescopes are equipped with tracking detectors based on Multigap Resistive Plate Chamber technology with
Abbrescia, M., Avanzini, C., Baldini, L., Batignani, G., Battaglieri, M., Boi, S., Bossini, E., Carnesecchi, F., Chiavassa, A., Cicalo, C., Cifarelli, L., Coccetti, F., Coccia, E., Corvaglia, A., De Gruttola, D., De Pasquale, S., Fabbri, F. L., Ferroli, L. Baldini, Frolov, V., Galante, L., Galeotti, P., Garbini, M., Gemme, G., Gnesi, I., Grazzi, S., Gustavino, C., Hatzifotiadou, D., La Rocca, P., Mandaglio, G., Maron, G., Mazziotta, M. N., Miozzi, S., Nania, R., Noferini, F., Nozzoli, F., Palmonari, F., Panareo, M., Panetta, M. P., Paoletti, R., Park, W., Pellegrino, C., Perasso, L., Pilo, F., Piragino, G., Pisano, S., Riggi, F., Righini, G. C., Ripoli, C., Rizzi, M., Rodriguez, O. Maragoto, Sartorelli, G., Scapparone, E., Schioppa, M., Scribano, A., Selvi, M., Serci, S., Squarcia, S., Taiuti, M., Terreni, G., Trifirò, A., Trimarchi, M., Vistoli, M. C., Votano, L., Williams, M. C. S., Zheng, L., Zichichi, A., Zuyeuski, R.   +66 more
core   +1 more source

Experimental determination of the optimum working conditions of a transcritical CO2 refrigeration plant with integrated mechanical subcooling [PDF]

, 2020
Subcooling methods for transcritical CO2 plants are being studied in order to improve their behavior. Among them, the Integrated Mechanical Subcooling system is one of the most promising owing that performs with high efficiency and it is a total-CO2 ...
Cabello López, Ramón, Calleja-Anta, Daniel, Catalán-Gil, Jesús, Llopis, Rodrigo, Nebot-Andres, Laura, Sánchez García-Vacas, Daniel   +5 more
core   +1 more source