The effect of inhibition on rate code efficiency indicators

One of efficiency indicators of grain grinders is grain granulometric composition. The basis of mixed fodder is crushed grain, the particles of which must have a leveled granulometric composition for subsequent mixing and obtaining a high-quality feed mixture. In agricultural production, hammer crushers are widely used, in which the destruction of grain occurs due to the impact of a hinged hammer. The main disadvantage of these crushers is that not the entire surface of the hammers is involved in grinding, thus reduces grinding process efficiency. A slightly different principle of material destruction is laid down in the basis of the proposed design of the shock-centrifugal grinder. Main work is performed by flat impact elements located on the rotor, which serve to accelerate crushed particles with subsequent impact of them on the bump elements. An important step in the design of new constructions of shock-centrifugal grinders is to determine size and location of the impact elements on the rotor, without which the grinding process is not possible. In the calculation method presented, the dependencies for determining the velocities and angles of a single particle flight from the surface of a flat impact element for its specified dimensions are proposed. Two variants of an impact element location on the rotor are considered and analyzed: radial and at an angle in the direction of rotor rotation. As a result of research carried out, it is noted that in the case of inclined position of an impact element on the rotor an increase in flight speed and flight angles change in crushed particles, which gives the opportunity to have a positive effect on grinding process.

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Prognostic Assessment of the Performance Parameters for the Industrial Diesel Engines Operated with Microalgae Oil

Sustainability ◽

10.3390/su13116482 ◽

2021 ◽

Vol 13 (11) ◽

pp. 6482

Author(s):

Sergejus Lebedevas ◽

Laurencas Raslavičius

Keyword(s):

Energy Efficiency ◽

Diesel Engine ◽

High Speed ◽

Performance Parameters ◽

Prognostic Assessment ◽

High Speed Diesel ◽

Microalgae Oil ◽

The Difference ◽

Smoke Opacity ◽

Efficiency Indicators

A study conducted on the high-speed diesel engine (bore/stroke: 79.5/95.5 mm; 66 kW) running with microalgae oil (MAO100) and diesel fuel (D100) showed that, based on Wibe parameters (m and φz), the difference in numerical values of combustion characteristics was ~10% and, in turn, resulted in close energy efficiency indicators (ηi) for both fuels and the possibility to enhance the NOx-smoke opacity trade-off. A comparative analysis by mathematical modeling of energy and traction characteristics for the universal multi-purpose diesel engine CAT 3512B HB-SC (1200 kW, 1800 min−1) confirmed the earlier assumption: at the regimes of external speed characteristics, the difference in Pme and ηi for MAO100 and D100 did not exceeded 0.7–2.0% and 2–4%, respectively. With the refinement and development of the interim concept, the model led to the prognostic evaluation of the suitability of MAO100 as fuel for the FPT Industrial Cursor 13 engine (353 kW, 6-cylinders, common-rail) family. For the selected value of the indicated efficiency ηi = 0.48–0.49, two different combinations of φz and m parameters (φz = 60–70 degCA, m = 0.5 and φz = 60 degCA, m = 1) may be practically realized to achieve the desirable level of maximum combustion pressure Pmax = 130–150 bar (at α~2.0). When switching from diesel to MAO100, it is expected that the ηi will drop by 2–3%, however, an existing reserve in Pmax that comprises 5–7% will open up room for further optimization of energy efficiency and emission indicators.

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Improving Indoor Air Quality by Using Sheep Wool Thermal Insulation

Materials ◽

10.3390/ma14092443 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2443

Author(s):

Andreea Hegyi ◽

Cezar Bulacu ◽

Henriette Szilagyi ◽

Adrian-Victor Lăzărescu ◽

Vasile Meiţă ◽

...

Keyword(s):

Air Quality ◽

Thermal Insulation ◽

Indoor Air ◽

Living Space ◽

Coefficient Of Thermal Conductivity ◽

Adequate Quality ◽

Risk Of Disease ◽

Efficiency Indicators ◽

Sheep Wool

Currently, the need to ensure adequate quality of air inside the living space but also the thermal efficiency of buildings is pressing. This paper presents the capacity of sheep wool heat-insulating mattresses to simultaneously provide these needs, cumulatively analyzing efficiency indicators for thermal insulation and indicators of improving air quality. Thus, the values obtained for the coefficient of thermal conductivity, and its resistance to heat transfer, demonstrate the suitability of their use for thermal insulation. The results of the permeability to water vapor characteristics on the sorption/desorption of water, air, demonstrate the ability to control the humidity of the indoor air and the results on the reduction of the concentration of formaldehyde, demonstrating their contribution to the growth of the quality of the air, and to reduce the risk of disease in the population.

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Identification and use of operating room efficiency indicators: the problem of definition

Canadian Journal of Surgery ◽

10.1503/cjs.020712 ◽

2013 ◽

Vol 56 (4) ◽

pp. 224-226 ◽

Cited By ~ 17

Author(s):

Tamas Fixler ◽

James Wright,

Keyword(s):

Operating Room ◽

Operating Room Efficiency ◽

Efficiency Indicators

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PMD31 Efficacy, Safety and Efficiency Indicators in the Peripheral Venous Access Management

Value in Health ◽

10.1016/j.jval.2020.08.1064 ◽

2020 ◽

Vol 23 ◽

pp. S581

Author(s):

F. Schettini ◽

L.B. Ferrario ◽

E. Foglia ◽

E. Garagiola ◽

E. Porazzi ◽

...

Keyword(s):

Venous Access ◽

Access Management ◽

Peripheral Venous Access ◽

Efficiency Indicators

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Modeling of Tractor Fuel Consumption

Energies ◽

10.3390/en14082300 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2300

Author(s):

Bronisław Andrzej Kolator

Keyword(s):

Fuel Consumption ◽

Soil Conditions ◽

Simulation Studies ◽

Working Capacity ◽

Operational Parameters ◽

System A ◽

The Individual ◽

Adjustment System ◽

Unit Performance ◽

Efficiency Indicators

In this paper, the energy diagnostic of tractor performance consists in evaluating the energy (fuel consumption per hectare—dm3 ha−1) for a given agricultural operation and in combining it with working capacity, also called productivity (area productivity—ha h−1). One of the methods of solving this problem is the identification of the functioning process of the machine unit. A model of the process of the machine unit performance was developed, considering the operation of the rear linkage system of the implement with the force control adjustment system. In order to analyze the system, a mathematical model of the system function was built: tractor-implement-soil, defining the physical connections and interdependencies between the individual subsystems of the system. Based on this model, a simulation model was developed and implemented in the Matlab/Simulink environment. The Simulink package was used to test the performance of the machine set. The efficiency indicators according to the adopted criteria were calculated in the evaluation block. To evaluate the process, the technical and operational parameters of the tractor, the type and parameters of the tool, and soil properties were taken into account. The results of simulation studies obtained on a validated model are consistent with experimental data from appropriate soil conditions.

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Influence of the cost of technological equipment of body production on indicators of efficiency of working processes

10.36652/1684-1298-2021-4-28-32 ◽

2021 ◽

pp. 28-32

Author(s):

Keyword(s):

Quality Index ◽

Production Efficiency ◽

Statistical Data ◽

The Body ◽

Technological Equipment ◽

Production Body ◽

Body Production ◽

The Cost ◽

Efficiency Indicators ◽

Selection Of

The possibilities for the development of bodywork in the context of the growing level of competition are analyzed in the article. The technological processes of bodywork are considered and the problem of choosing technological equipment is indicated. The statistical data about the efficiency indicators of company body divisions, operating in the body repair market in Krasnoyarsk, are presented. A composite quality index for the equipment of the bodywork department (using the example of body stocks) is proposed and calculated, and on its basis, some recommendations are given for companies which plan to enter the market of body repair services. Keywords: body production, body repair, body equipment, body production efficiency, selection of technological equipment

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