Results 91 to 100 of about 325,139 (297)

Scheduling of Multiple Chillers in Trigeneration Plants [PDF]

open access: yes, 2015
The scheduling of both absorption cycle and vapour compression cycle chillers in trigeneration plants is investigated in this work. Many trigeneration plants use absorption cycle chillers only but there are potential performance advantages to be gained ...
Ng, Bobo, Underwood, Chris, Yik, Francis
core   +2 more sources

New Onset of Fibromyalgia After Exposure to a Combat Environment: A Longitudinal Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Traumatic life events are hypothesized to be triggers for the onset of fibromyalgia. Posttraumatic stress disorder (PTSD) is a common comorbidity of fibromyalgia. However, limited prospective data are available on the development of fibromyalgia after exposure to high‐magnitude stress.
Jay B. Higgs   +15 more
wiley   +1 more source

Optimizing the refrigerants in ultra-low temperature Semiconductor processing chiller with mixed Refrigerant

open access: yesCase Studies in Thermal Engineering
Mixed refrigerant (MR) Cascade Refrigeration Systems are widely employed in industries requiring both extremely low temperatures and large cooling capacity, such as semiconductors and displays.
Hye-In Jung   +2 more
doaj   +1 more source

Application of solar energy to air conditioning systems [PDF]

open access: yes
The results of a survey of solar energy system applications of air conditioning are summarized. Techniques discussed are both solar powered (absorption cycle and the heat engine/Rankine cycle) and solar related (heat pump).
Harstad, A. J., Nash, J. M.
core   +1 more source

Exploratory Research on MEMS Technology for Air-Conditioning and Heat-Pumps [PDF]

open access: yes, 1998
This report details the efforts to exploit micro-electrical-mechanical-systems (MEMS) and micro device technologies to improve control of multi-channel evaporators by reducing maldistribution among channels, and increase capacity and efficiency of ...
Hrnjak, P.S.   +2 more
core  

Experimental Study on the Heat Pump Performance Combined with Dual-Purpose Solar Collector

open access: yesEnergies
In this study, we proposed and experimentally investigated a novel solar-assisted heat pump (SAHP) system integrated with a dual-purpose solar collector (DPSC).
Kwang-Am Moon   +3 more
doaj   +1 more source

Comparative performance of twenty-three types of flat plate solar energy collectors [PDF]

open access: yes, 1975
Report compares efficiencies of 23 solar collectors for four different purposes: operating a Rankine-cycle engine, heating or absorption air conditioning, heating hot water, and heating a swimming ...
Simon, F. F.
core   +1 more source

Cracking the Code: Which Ocular Symptoms Predict Dry Eye Signs? Insights from a large international sicca registry

open access: yesArthritis Care &Research, Accepted Article.
Purpose The study aimed to identify symptom‐based predictors of dry eye disease (DED) signs in the Sjögrens International Collaborative Clinical Alliance (SICCA) cohort. Methods Retrospective analysis examining 16 ocular symptoms (most graded 0‐4) and artificial tear (AT) use (graded 0‐3) as predictors of DED signs [abnormal ocular surface staining ...
Pragnya R Donthineni   +7 more
wiley   +1 more source

Experimental Study on the Performance of an Air Conditioning Unit with a Baffled Indirect Evaporative Cooler

open access: yesEnergies
Indirect evaporative coolers (IECs) use the latent heat of water evaporation to cool air. This system has the advantage of operating at low power without a compressor and does not increase the absolute humidity of the air. However, an IEC is difficult to
Seong-Bhin Kim   +3 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

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