Tight Temperature Regulation of a Space Using a One Step Ahead Optimal Controller: An Experimental Investigation

1993 ◽  
Author(s):  
William N. Patten ◽  
Jian Huang ◽  
Jiaojian Huang
Keyword(s):  
Experimental Investigation ◽  
Temperature Regulation ◽  
Optimal Controller ◽  
One Step

scholarly journals An Experimental Investigation of Karanja Biodiesel Production in Sarawak, Malaysia

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Dewi Harreh ◽  
A. A. Saleh ◽  
A. N. R. Reddy ◽  
S. Hamdan
Keyword(s):  
Experimental Investigation ◽  
Clean Energy ◽  
Biodiesel Production ◽  
Brake Specific Fuel Consumption ◽  
Physiochemical Properties ◽  
Brake Thermal Efficiency ◽  
The Past ◽  
Brake Power ◽  
One Step ◽  
Karanja Oil

The application of nonedible feedstock for the production of biodiesel has become an area of research interest among clean energy experts in the past few years. This research is aimed at the utilization of Pongamia pinnata (karanja), a nonedible feedstock from the state of Sarawak, Malaysia, to produce biodiesel to be known as crude karanja oil (CKO). A one-step transesterification process utilizing 7 : 1–10 : 1 wt% methanol (CH3OH) and 0.5–1.2 wt% sodium hydroxide (NaOH) at 65°C for 1.5 hrs has been used for the biodiesel production yielding 84% conversion. The physiochemical properties of the CKO produced revealed that it conforms with EN14214 standards for brake power (BP), brake specific fuel consumption (BSFC), and brake thermal efficiency (BTE) as they are all noted be optimal at B40.

scholarly journals Experimental Investigation of the Wear Behaviour of Coated Polymer Gears

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3588
Author(s):  
Brigita Polanec ◽  
Franc Zupanič ◽  
Tonica Bončina ◽  
Frančišek Tašner ◽  
Srečko Glodež
Keyword(s):  
Experimental Investigation ◽  
Magnetron Sputtering ◽  
Vapour Deposition ◽  
Research Work ◽  
Surface Coatings ◽  
Wear Behaviour ◽  
Second Step ◽  
Additional Testing ◽  
One Step ◽  
Tooth Flank

A comprehensive experimental investigation of the wear behaviour of coated spur polymer gears made of POM is performed in this study. The three physical vapour deposition (PVD) coatings investigated were aluminium (Al), chromium (Cr), and chromium nitrite (CrN). Al was deposited in three process steps: By plasma activation, metallisation of Al by the magnetron sputtering process, and by plasma polymerisation. Cr deposition was performed in only one step, namely, the metallization of Cr by the magnetron sputtering process. The deposition of CrN was carried out in two steps: the first involved the metallization of Cr by the magnetron sputtering process while the second step, vapour deposition, involved the reactive metallisation of Cr with nitrogen, also by the magnetron sputtering process. The gears were tested on an in-house developed testing rig for different torques (16, 20, 24 and 30 Nm) and rotational speed of 1000 rpm. The duration of the experiments was set to 13 h, when the tooth thickness, and, consequently, the wear of the tooth flank was recorded. The experimental results showed that the influence of metallisation with aluminium, chromium, and chromium nitrite surface coatings on the wear behaviour of the analysed polymer gear is not significant. This is probably due to the fact that the analysed coatings were, in all cases, very thin (less than 500 nm), and therefore did not influence the wear resistance significantly. In that respect, an additional testing using thicker coatings should be applied in the further research work.

Experimental investigation of a 110 GHz/1 MW gyrotron with the one-step depressed collector

1997 ◽  
Vol 18 (11) ◽  
pp. 2129-2136 ◽  
Author(s):  
M. Yu. Glyavin ◽  
A. N. Kuftin ◽  
N. P. Venediktov ◽  
V. E. Zapevalov
Keyword(s):  
Experimental Investigation ◽  
One Step ◽  
Depressed Collector ◽  
The One

Experimental Investigation of Possibilities Vacuum Infusion Technology to Produce Composite Ribs

2015 ◽  
Vol 1120-1121 ◽  
pp. 531-534
Author(s):  
Soňa Rusnáková ◽  
Ladislav Fojtl ◽  
Milan Žaludek ◽  
Alexander Čapka ◽  
Vladimír Rusnák
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Composite Structure ◽  
Composite Structures ◽  
Composite System ◽  
Lower Strength ◽  
Vacuum Infusion ◽  
One Step ◽  
Bonding Technology ◽  
Glass Reinforcement

In the present work, mechanical properties and bending stiffness of composite structures with ribs are studied. The aim of this work was making ribbed composite structures in one step, where the ribs are inserted between glass reinforcement of composite system. In practice, the ribs on the composite structure (final products) are glued, but where there is a lower strength (according to the type of surface, the surface treatment, suitable bonding technology, the type of glue) and the adhesives are relatively expensive. The production of samples was used technology of vacuum infusion under flexible foil.

Development of Heat Pump System Using Thermobank and Ejector for Heating Room and Cold Storage

2015 ◽  
pp. 784-802
Author(s):  
Jong-Taek Oh ◽  
Cuong Ne Ngoc
Keyword(s):  
Experimental Investigation ◽  
Heat Pump ◽  
Cold Storage ◽  
Temperature Regulation ◽  
Cfd Simulation ◽  
Coefficient Of Performance ◽  
Pump System ◽  
Heat Pump System ◽  
Simulation Process ◽  
Wasted Heat

In this study, heat pump system has been developed by CFD simulation and experimental investigation. It studies the thermal behavior of a thermobank and COP on heat pump system and cold storage. The thermobank stores the wasted heat of during refrigeration cycles and its energy is used for defrosting process and heating room. It also reduces defrosting time and condensation load so that the temperature regulation in the cold storage is constant. The system is investigated experimentally and CFD simulated under thermobank. The dimension L×W×H of cold storage is 3×1,6×1,4 m, thermobank is 600×300×400mm. The temperature of ambient on CFD simulation process is 150C.This heat pump system can be used to keep preservation of agricultural products in cold storage warehouse together with floor panel heating for room in winter. The ejector is used in system which the purpose increases in coefficient of performance (COP) and decrease in compressor displacement. As the calculated results, its COP is increased about 38% when using thermobank and ejector in heat pump system.

Adaptive one-step-ahead optimal controller based on WLS schemes

2009 ◽  
Vol 23 (3) ◽  
pp. 241-259 ◽  
Author(s):  
Kueiming Lo ◽  
Rui Jiang ◽  
Donghai Li
Keyword(s):  
Optimal Controller ◽  
One Step

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

Nutrient-regulated gene expression in eukaryotes

2006 ◽  
Vol 73 ◽  
pp. 85-96 ◽  
Author(s):  
Richard J. Reece ◽  
Laila Beynon ◽  
Stacey Holden ◽  
Amanda D. Hughes ◽  
Karine Rébora ◽  
...  
Keyword(s):  
Gene Expression ◽  
Rna Polymerase ◽  
Rna Polymerase Ii ◽  
Transcriptional Control ◽  
Direct Interaction ◽  
Signalling Pathways ◽  
A Cell ◽  
One Step ◽  
Higher Eukaryotes ◽  
Regulated Gene Expression

The recognition of changes in environmental conditions, and the ability to adapt to these changes, is essential for the viability of cells. There are numerous well characterized systems by which the presence or absence of an individual metabolite may be recognized by a cell. However, the recognition of a metabolite is just one step in a process that often results in changes in the expression of whole sets of genes required to respond to that metabolite. In higher eukaryotes, the signalling pathway between metabolite recognition and transcriptional control can be complex. Recent evidence from the relatively simple eukaryote yeast suggests that complex signalling pathways may be circumvented through the direct interaction between individual metabolites and regulators of RNA polymerase II-mediated transcription. Biochemical and structural analyses are beginning to unravel these elegant genetic control elements.

CAD: One Step Forward, One Step Back

2010 ◽  
Vol 43 (18) ◽  
pp. 16
Author(s):  
MATTHEW R.G. TAYLOR
Keyword(s):  
One Step
Sign in / Sign up

Export Citation Format

Share Document