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The Influence of Loop Heat Pipe Evaporator Porous Structure Parameters and Charge on Its Effectiveness for Ethanol and Water as Working Fluids
PublicationAbstract: This paper presents the results of experiments carried out on a specially designed experimental rig designed for the study of capillary pressure generated in the Loop Heat Pipe (LHP) evaporator. The commercially available porous structure made of sintered stainless steel constitutes the wick. Three different geometries of the porous wicks were tested, featuring the pore radius of 1, 3 and 7 um. Ethanol and water as two...
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Analysis of the Heating Process of Hydraulic Motors during Start-Up in Thermal Shock Conditions
PublicationConditions that prevail during harsh winters and hot summers pose a serious challenge for machine designers building devices suitable for operation in extreme weather. It is essential for the designers and the users to define the principles and conditions for the safe operation of machines and devices with hydraulic drive in low ambient temperatures. Bearing in mind the above, the author tested the hydraulic motors in thermal shock...
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Sustainable Fashion in Poland—Too Early or Too Late?
PublicationThis article presents an analysis of the concept of sustainable fashion from the Polish consumer’s perspective. The aim of this research is to investigate how Polish fashion consumers approach the concepts of sustainability, such as organic, fair-trade, and carbon emissions. Exploring the experience of the Polish consumption context provides a richer understanding of the evolution of fashion sustainability concepts in this and...
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THERMODYNAMIC ANALYSIS OF A GENERATION IV SCWR NUCLEAR POWER PLANT CYCLE
PublicationThis article presents a flow and thermodynamic analysis of a Generation IV nuclear cycle. An SCWR (Supercritical water reactor) is a high temperature and high pressure reactor that uses water at a temperature above its thermodynamic critical point as the working fluid. The cycle used for the calculations consists of one interstage superheater and 7 regenerative heat exchangers. Division pressure was optimized in view of the cycle efficiency,...
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Zmiany temperatury wody powierzchniowej na morzach Arktyki Rosyjskiej i ich konsekwencje dla żeglugi na Północnej Drodze Morskiej
PublicationPraca omawia zmiany średniej miesięcznej temperatury wody powierzchniowej na morzach Arktyki Rosyjskiej w latach 1979-2016. Stwierdzono, że w badanym okresie następował powolny wzrost SST. Jednakże tylko na Morzu Barentsa był on istotny statystycznie we wszystkich miesiącach roku (poza marcem w SE części tego morza), a w zachodniej części Morza Czukockiego w okresie od czerwca do grudnia. W dalszym ciągu na wszystkich morzach,...
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Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems
PublicationThe effects of interference of pressure waves in simple piping systems were studied. A freeware computer code Allievi developed at the University of Valencia was used to simulate dynamic waveforms in simple and complex networks. The tests were carried out according to three scenarios. No pressure increases significantly exceeding the Joukowsky pressure in simple cases were noticed. When the effects of the simultaneous closing of...
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Effect of Some Sulphur Additives on The Degradation of 9Cr-1Mo Steel After Its 10 Years Service in The CCR Platforming Unit
PublicationThe work shows the results of the tests of 9Cr-1Mo steel, which was for 10 years operated in the CCR platforming unit in Group Lotos SA in Gdańsk, and then in the laboratory was sulphidised during 166 h at a temperature of 600 °C. Sulphidation was performed in a mixture of H2-H2S gases at the vapour pressure of sulphur 4.1·10-14 atm, so the order of magnitude of vapour pressure was less than that of the dissociation pressure of...
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Exergy analysis of a negative CO2 emission gas power plant based on water oxy-combustion of syngas from sewage sludge gasification and CCS
PublicationA power cycle with water-injected oxy-combustion (water cycle) is investigated by exergy analysis. It is fueled with syngas (aka. producer gas) from gasification of sewage sludge. The cycle is equipped with a spray-ejector condenser (SEC). CO2 is separated and compressed for transportation and storage. The net delivered electric power is 31% of the fuel exergy. The task efficiency is 39% when the flue gas bleed to gasification...
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ONTARGET, TRANSCEND and PROFESS – Clarifying, confusing or misleading
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Angiotensin receptor blockers and endpoint protection
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Health economy of the metabolic syndrome pandemic
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Angiotensin receptor blockers and cancer – Relationship dismissed by VALUE data while waiting for EMA and FDA reports
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Revisiting the pre-hypertension debate: Increasing evidence for treatment – or not?
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Hypertension and coronary artery disease: Mechanistic insights and therapeutic challenges
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Antihypertensive efficacy and safety of olmesartan and ramipril in elderly patients with mild to moderate systolic and diastolic essential hypertension
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Angiotensin II receptor blocker combinations: From guidelines to clinical practice
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Antihypertensive therapy and cancer risks?
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A stunning day in hypertension research – Results of ONTARGET, ACCOMPLISH and HYVET
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Primary cardiovascular prevention by Mediterranean diet – The PREDIMED trial
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An appropriate SCORE to assess cardiovascular risk in hypertension?
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Reappraisal of European guidelines on hypertension management: a European Society of Hypertension Task Force document
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EDITORIALHypertension and cardiovascular disease: Is arterial stiffness the heart of the matter?
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Renal nerve ablation: Emerging role in therapeutics
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Angiotensin receptor - neprilysin inhibiton (ARNI) – A novel therapeutic concept for management of hypertension and heart failure
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Should we treat prehypertension?
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ESH statement on detection and punishment of abstract fraud and poster plagiarism
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Increased Urinary C-Peptide and Albumin Excretion in Juvenile Borderline Hypertensives
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Survey of patient and physician assessment of a compliance reminder device in the treatment of hypertension
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Smoking is associated with chronic sympathetic activation in hypertension
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Medical decision making in hypertension
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2013 ESH/ESC Guidelines for the management of arterial hypertension
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Documentation of endpoint prevention with combination therapy in hypertension is urgently needed
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2013 European Society of Hypertension/European Society of Cardiology Hypertension Guidelines
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SCORE model underestimates cardiovascular risk in hypertensive patients: Results of the Polish Hypertension Registry
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Awareness of hypertension guidelines in primary healthcare in Poland
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Beta‐blockers as sub‐optimal treatment for hypertension: Time for first‐line therapy revision?
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The question of whether diabetes and its cardiovascular risks can be prevented: A realistic DREAM?
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State of global health – hypertension burden and control
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Cardiovascular risks in HIV patients
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Impact of abdominal obesity on the frequency of hypertension and cardiovascular disease in Poland – Results from the IDEA study (International Day for the Evaluation of Abdominal Obesity)
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Hypertension and cardiovascular disease in women: Progress towards better understanding of gender‐specific differences?
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ASCOT – More than a horse race!
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The surge of Japanese studies supporting the use of angiotensin receptor blockers in hypertension
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Does GISSI-AF change the concept of using RAS inhibitors in the primary prevention of atrial fibrillation in hypertensive patients?
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The J-curve phenomenon revisited
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Hypertension research into the new millennium
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Characterization of insomnia in patients with essential hypertension
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Increased time varying heart rate and cardiovascular risk in hypertension – Benefit of selective I(f)channel inhibitor?
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Is smoking a causative factor of hypertension?
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Direct renin inhibitors in hypertension – Approaching the moment of truth
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