Results 21 to 30 of about 1,757 (201)

The Use of R290 As a Replacement For R404A in Block Ice Machines

R.E.M. (Rekayasa Energi Manufaktur) Jurnal
This study evaluates the performance of R290 refrigerant as an alternative to R404A in block ice-making machines based on vapor compression cycles. The method used is a quantitative experimental approach with direct testing of compressor power, condenser power, evaporator power, and coefficient of performance (COP) parameters.
Vigasta Febiadisti, null Nia Nuaraeni Suryaman, null Arifin Santosa, null Aep Saepudin, null Andri Setiawan   +4 more
openaire   +3 more sources

Outcomes among non-Western immigrant patients and Danish-born patients with acute myeloid Leukaemia: A Danish population-based cohort study. [PDF]

Br J Haematol
Summary Non‐Western immigrant patients (NWIPs) may be a vulnerable population when diagnosed and treated for acute myeloid leukaemia (AML). Here we report selected quality parameters related to diagnosis, treatment, and outcome of newly diagnosed AML among NWIPs (n = 119) and Danish‐born patients (DBPs) (n = 4689). No adjusted differences were observed
Kristensen DT, Simonsen MR, Roug AS, Marcher CW, Ørskov AD, Sørensen ALT, El-Galaly TC, Baech J.   +7 more
europepmc   +2 more sources

A Program to Improve General Palliative Cancer Care Guideline Implementation: Development, Acceptability, and Feasibility of Implementation Strategies. [PDF]

J Eval Clin Pract
ABSTRACT Rationale Implementing palliative care for patients with cancer in the healthcare sector is a complex task. Some patients with cancer do not receive timely and comprehensive palliative care tailored to their needs, potentially reducing their quality of life.
Sørensen DM, Egholm CL, Dalton SO, Rosted E, Brodersen JB, Møller ML, Petersen MA, Heymann AV, Bidstrup P.   +8 more
europepmc   +2 more sources

Experimental comparison and optimal machine learning technique for predicting the thermo-hydraulic performance of Low-GWP refrigerants (R1234yf, R290, and R13I1/R290) during evaporation in plate heat exchanger

Case Studies in Thermal Engineering
In recent times, employing machine learning techniques (MLTs) to forecast the evaporation/condensation performance of refrigerants, namely the heat transfer coefficient (HTC) and frictional pressure drop (FPD), has become increasingly significant. In the
Rajendran Prabakaran, Thangamuthu Mohanraj, Palanisamy Dhamodharan, Sung Chul Kim   +3 more
doaj   +2 more sources

The Experimental Study of PVTx Properties of Near Aeotropic Mixture Refrigerant R290/R134a

Zhileng xuebao, 2014
In order to get the thermophysical properties of mixed refrigerants R134a/R290, the author built PVTx experimental system with high accuracy. Based on the Burnett method, the author measured the PVT properties of R134a/R290 with mass fraction 50%/50%, 55%
Yang Xi, Qi Yingxia, Chen Wei, Zhang Hua
doaj   +3 more sources

Chiller performance study with refrigerant R290 [PDF]

AIP Conference Proceedings, 2019
The purpose of this paper is to examine energy efficiency through the study of performance in vapour compression cycle for auditorium in University of Indonesia using natural refrigerant R290. The installation of the chiller system which is the first in Indonesia within academic institution is particularly relevant in light of the gaining interest and ...
Zulfa Fuadi, Ardiyansyah Yatim, Rachmah Rizky, Nyayu Aisyah, Idrus Alhamid, Budihardjo Budihardjo, Nandy Putra   +6 more
openaire   +1 more source

Experimental and Theoretical Investigation of Propane/Butane and Propane/Isobutane Mixtures as an Alternative to R134a in a Domestic Refrigerator [PDF]

Engineering and Technology Journal, 2014
In the present work, theoretical and experimental investigation have been carried out with two hydrocarbon refrigerant mixtures as a possible alternatives to R134a. Theoretical performance of an ideal vapor compression refrigeration cycle using R290/R600
Wahid S. Mohammad, Assad Oda Jassim
doaj   +1 more source

Experimental study of a R290 variable geometry ejector

Journal of Physics: Conference Series, 2023
Abstract Ejectors are classified as fluid-dynamics controlled devices where the “component-scale” performances are imposed by the local-scale fluid dynamic phenomena. For this reason, ejector performances (measured by the pressure-entrainment ratio coordinate of the critical point) are determined by the connection of operation conditions,
Besagni G., Inzoli F., Croci L., Brignoli V., Smolka J., Palacz M., Haida M., Bodys J., Fingas R., Nowak A. J., Melka B., Stebel M., Piechnik E.   +12 more
openaire   +3 more sources

KAJI EKSPERIMENTAL RETROFIT R404A DENGAN REFRIGERAN RAMAH LINGKUNGAN R290 PADA FREEZER [PDF]

, 2023
R404A refrigerant is still widely used as the working fluid in freezers with temperatures below -30°C. However, because of R404A’s high global warming potential (GWP) value, its use as a working fluid should be stopped immediately.
Triaji Pangripto Pramudantoro, Sukri, Mohamad Firdaus, Sumeru, Kasni, Kasni Sumeru, Apip Badarudin, Ridwan Nugraha, Nugraha, Ridwan, Sukri, Mohamad Firdaus bin, Luga Martin Simbolon, Badarudin, Apip, Simbolon, Luga Martin, Pramudantoro, Triaji Pangripto   +11 more
core   +1 more source

Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Hittite Journal of Science and Engineering, 2023
Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications.
Meltem Koşan
doaj   +1 more source