Effects of Air Flow, Draw Temperature and Boundary Conditions on Hardening in Ice Cream Manufacturing

2010 ◽  
Author(s):  
N. L. Rauth ◽  
Mark J. Miller ◽  
X. Jack Xin ◽  
Z. J. Pei ◽  
Karen A. Schmidt
Keyword(s):  
Energy Consumption ◽  
Food Industry ◽  
Ice Cream ◽  
The United States ◽  
Bottom Surface ◽  
Surface Boundary ◽  
Dairy Food ◽  
Hardening Process ◽  
Sources Of Variation ◽  
Surface Boundary Condition

Energy consumption by the dairy food industry in the United States constitutes 10% of all energy consumed by the U.S. food industry, and reducing energy consumption in cooling and refrigeration of foods plays an important role in meeting the challenge of the energy crisis. Hardening is an important and energy-intensive step in ice cream manufacturing. This work presents Finite Element Method (FEM) investigation of the hardening process in ice cream manufacturing and assesses the accuracy and acceptability of the presented FEM methods. The FEM results are compared to experimentally data from the literature, and sources of variation including convection coefficient, bottom surface boundary condition and draw temperature are explored.

Effects of Container Geometry on Energy Consumption During Hardening in Ice Cream Manufacturing

2010 ◽  
Author(s):  
W. C. Cromer ◽  
Mark J. Miller ◽  
X. J. Xin ◽  
Z. J. Pei ◽  
Karen A. Schmidt
Keyword(s):  
Energy Consumption ◽  
Food Industry ◽  
Energy Savings ◽  
Ice Cream ◽  
The United States ◽  
Dairy Food ◽  
Hardening Process ◽  
Container Shape ◽  
The U.S ◽  
Reducing Energy

Energy consumption by the dairy food industry in the United States constitutes 10% of all energy consumed by the U.S. food industry. Reducing energy consumption in cooling and refrigeration of foods plays an important role in meeting the challenge of the energy crisis. Hardening is an important and energy-intensive step in ice cream manufacturing. This work presents Finite Element Method (FEM) investigation of the ice cream hardening process, aiming to provide insight and guidance for energy savings in ice cream manufacturing. Effects of container shape and dimensions, container layers, and heat transfer boundary conditions on energy consumption for hardening of ice cream were investigated.

scholarly journals State regulation efficiency of food companies of Russia in sanction period

2020 ◽  
Vol 38 (Especial II) ◽  
pp. 396-409
Author(s):  
Alexander Sergeevich Baleevskikh ◽  
Oleg Ilyasovich Katlishin
Keyword(s):  
Russian Federation ◽  
Food Industry ◽  
The United States ◽  
State Regulation ◽  
Effective Management ◽  
Dairy Food ◽  
Global Innovation ◽  
Self Sufficiency ◽  
The Russian Federation ◽  
Food Complex

The article is dedicated to the new political course of the Russian Federation, aimed at overcoming the economic blockade of the countries of Europe, as well as the United States. Effective management of food enterprises should take into account the new economic con-ditions for the functioning of the food economic subsector. In view of the crisis associated with the spread of coronavirus, falling oil prices, the ruble situation, the development of an economic course to adapt the Russian food industry becomes paramount. Therefore, the purpose of this article is a set of government measures to regulate the dairy food complex of the Russian Federation, both federally and regionally for the period 2008-2018. An analysis of the dynamics of milk industry indicators showed that the level of self-sufficiency for the period 2008-2018 was below the standard: 0.90. The study correlated the economics "im-port" and "self-sufficiency". Based on the data, it is concluded that the Russian Federation needs global innovation in the food industry mainly to the effective management of the agricultural dairy subsector.

Comparison of Direct and Indirect Energy Consumption in China and the United States

2011 ◽  
Author(s):  
Hongtao Liu ◽  
Karen R. Polenske ◽  
Joaquim Guilhoto ◽  
Youmin Xi
Keyword(s):  
United States ◽  
Energy Consumption ◽  
The United States

scholarly journals Energy Consumption Analysis and Characterization of Healthcare Facilities in the United States

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3775 ◽  
Author(s):  
Khaled Bawaneh ◽  
Farnaz Ghazi Nezami ◽  
Md. Rasheduzzaman ◽  
Brad Deken
Keyword(s):  
United States ◽  
Energy Consumption ◽  
Energy Intensity ◽  
The United States ◽  
High Energy ◽  
Total Energy Consumption ◽  
Healthcare Facilities ◽  
Energy Consumption Analysis ◽  
Consumption Data ◽  
End Use

Healthcare facilities in the United States account for 4.8% of the total area in the commercial sector and are responsible for 10.3% of total energy consumption in this sector. The number of healthcare facilities increased by 22% since 2003, leading to a 21% rise in energy consumption and an 8% reduction in energy intensity per unit of area (544.8 kWh/m2). This study provides an analytical overview of the end-use energy consumption data in healthcare systems for hospitals in the United States. The energy intensity of the U.S. hospitals ranges from 640.7 kWh/m2 in Zone 5 (very hot) to 781.1 kWh/m2 in Zone 1 (very cold), with an average of 738.5 kWh/m2. This is approximately 2.6 times higher than that of other commercial buildings. High energy intensity in the healthcare facilities, particularly in hospitals, along with energy costs and associated environmental concerns make energy analysis crucial for this type of facility. The proposed analysis shows that U.S. healthcare facilities have higher energy intensity than those of most other countries, especially the European ones. This necessitates the adoption of more energy-efficient approaches to the infrastructure and the management of healthcare facilities in the United States.

Optimisation of Nickel Aluminising by CVD

2012 ◽  
Vol 323-325 ◽  
pp. 367-372 ◽  
Author(s):  
Patrick J. Masset ◽  
Agnieszka Bogusz ◽  
Jan Sieniawski ◽  
Bartek Wierzba ◽  
Katarzyna Tkacz-Śmiech
Keyword(s):  
Substrate Surface ◽  
Chemical Vapour ◽  
Aluminium Chloride ◽  
Aluminium Content ◽  
Surface Boundary ◽  
Essential Information ◽  
Nial Phase ◽  
Partial Pressures ◽  
State Diffusion ◽  
Surface Boundary Condition

Results Concerning Nickel Aluminisation with Application of Chemical Vapour Deposition Method Are Presented. Two-Step Processing under Investigation Consists of Al Chloride Formation in the Primary Vessel and Al Deposition in the Secondary One. the Initial Gas Stream Is Composed of Hcl Dissolved in H2at Various Ratios. it Was Shown that the Choice of the [HCl]/[H2] Ratio and the Determination of the Optimum Temperature to Produce Most Preferential β-Nial Phase May Be Done with the Use of Thermodynamic Calculations. the Results Obtained with Application of Factsage Program Confirm Essential Influence of both Initial [HCl]/[H2] Ratio (in the Range between 0,05 and 100) and the Temperature in the Second Vessel (1123 K – 1323 K) on Aluminium Chloride Partial Pressures and Hence Aluminium Content in its Gaseous Donors and at the Substrate Surface (boundary Condition for Interdiffusion in Ni-Al System). it Was Confirmed that β-Nial Growth Is Favoured at Low [HCl]/[H2] Ratios and High Temperatures for which Alcl and AlCl2Partial Pressures Increase with Respect to that of AlCl3. the Thermodynamic Predictions Remain in Agreement with CVD Experiments. the Presented Thermodynamic Data May Be Used as a Source of Essential Information for Designing Further Experiments in this Field as Well as for Modelling of Solid-State Diffusion in Ni-Al System.

The Effect of Journal Bearing Misalignment on Load and Cavitation for Non-Newtonian Lubricants

1986 ◽  
Vol 108 (4) ◽  
pp. 645-654 ◽  
Author(s):  
R. H. Buckholz ◽  
J. F. Lin
Keyword(s):  
Reynolds Equation ◽  
Numerical Solutions ◽  
Journal Bearings ◽  
Surface Boundary ◽  
Film Rupture ◽  
Aspect Ratios ◽  
Free Surface Boundary Condition ◽  
Load Carrying ◽  
Boundary Location ◽  
Surface Boundary Condition

An analysis for hydrodynamic, non-Newtonian lubrication of misaligned journal bearings is given. The hydrodynamic load-carrying capacity for partial arc journal bearings lubricated by power-law, non-Newtonian fluids is calculated for small valves of the bearing aspect ratios. These results are compared with: numerical solutions to the non-Newtonian modified Reynolds equation, with Ocvirk’s experimental results for misaligned bearings, and with other numerical simulations. The cavitation (i.e., film rupture) boundary location is calculated using the Reynolds’ free-surface, boundary condition.

scholarly journals Development of Packaging and Modular Control of Thermoelectric Clothes Dryer, With Performance Evaluation

2017 ◽  
Author(s):  
Viral K. Patel ◽  
Kyle R. Gluesenkamp
Keyword(s):  
Energy Consumption ◽  
Heat Pump ◽  
Minimum Energy ◽  
Experimental System ◽  
The United States ◽  
Primary Energy ◽  
System Level ◽  
Clothes Dryer ◽  
Thermoelectric Heat Pump ◽  
Thermoelectric Heat

This paper provides an overview of a thermoelectric heat pump clothes dryer which was developed with the aim of reducing the significant primary energy consumption attributed to residential electric clothes drying in the United States (623 TBtu/yr). The use of thermoelectric modules in place of the conventional electric resistance heater resulted in a 40% reduction in the energy consumption of the system, compared to the minimum energy efficiency standard. This was achieved for the first time for a standard test load of 8.45 lb, using a clothes dryer prototype with a thermoelectric heat pump module as the sole heating mechanism. The current experimental prototype was developed after extensive modeling, system design and control optimization, and experimental system-level evaluation of control parameters. The demonstration of improved energy consumption has laid the foundation for future development of this technology.

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