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.

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.

scholarly journals Retail Deli Slicer Inspection Practices: An EHS-Net Study

2018 ◽  
Vol 81 (5) ◽  
pp. 799-805 ◽  
Author(s):  
LAUREN E. LIPCSEI ◽  
LAURA G. BROWN ◽  
E. RICKAMER HOOVER ◽  
BRENDA V. FAW ◽  
NICOLE HEDEEN ◽  
...  
Keyword(s):  
Food Industry ◽  
The United States ◽  
Cross Contamination ◽  
Prevention Strategies ◽  
Assessment Data ◽  
Worker Training ◽  
The Third ◽  
Control And Prevention ◽  
Retail Food ◽  
The U.S

ABSTRACT The Centers for Disease Control and Prevention (CDC) estimates that 3,000 people die in the United States each year from foodborne illness, and Listeria monocytogenes causes the third highest number of deaths. Risk assessment data indicate that L. monocytogenes contamination of particularly delicatessen meats sliced at retail is a significant contributor to human listeriosis. Mechanical deli slicers are a major source of L. monocytogenes cross-contamination and growth. In an attempt to prevent pathogen cross-contamination and growth, the U.S. Food and Drug Administration (FDA) created guidance to promote good slicer cleaning and inspection practices. The CDC's Environmental Health Specialists Network conducted a study to learn more about retail deli practices concerning these prevention strategies. The present article includes data from this study on the frequency with which retail delis met the FDA recommendation that slicers should be inspected each time they are properly cleaned (defined as disassembling, cleaning, and sanitizing the slicer every 4 h). Data from food worker interviews in 197 randomly selected delis indicate that only 26.9% of workers (n = 53) cleaned and inspected their slicers at this frequency. Chain delis and delis that serve more than 300 customers on their busiest day were more likely to have properly cleaned and inspected slicers. Data also were collected on the frequency with which delis met the FDA Food Code provision that slicers should be undamaged. Data from observations of 685 slicers in 298 delis indicate that only 37.9% of delis (n = 113) had slicers that were undamaged. Chain delis and delis that provide worker training were more likely to have slicers with no damage. To improve slicer practices, food safety programs and the retail food industry may wish to focus on worker training and to focus interventions on independent and smaller delis, given that these delis were less likely to properly inspect their slicers and to have undamaged slicers.

Reducing Energy Consumption through Innovative Glass Layering Construction with Polyethylene Bubble Wrap at 2nd Floor Dean Faculty Room

2015 ◽  
Vol 1123 ◽  
pp. 348-351 ◽  
Author(s):  
Ary Bachtiar Krishna Putra ◽  
Widyastuti ◽  
Dimas Anton ◽  
Arrad Ghani Safitra ◽  
Eky Novianarenti
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Radiant Energy ◽  
System Size ◽  
Legal Framework ◽  
Building Energy Modeling ◽  
Air Conditioning System ◽  
Insulation Materials ◽  
Reduce Heat Loss ◽  
Reducing Energy

Reducing energy consumption in buildings has been an important and growing concern in most countries since the Kyoto Protocol was entered into force in 2005. For instance, ITS has set the target reduction of greenhouse gases in building and support act as a legal framework for promoting ECO Campus program. Design concept using glass layering construction with bubble wrap can contribute significantly in reducing the required air conditioning system size so annual energy cost decrease too. The objective of this paper is to present an overview of the basic principles of thermal insulation, the example of building energy modeling using polyethylene insulation materials, and to survey the most commonly used building insulation materials as well as their performance characteristics. A “bubble wrap” with a reflective insulation helps to reduce heat loss by reflecting away up to 97% radiant energy with less than 0.05 emittance. The result from this study is 3% to 6% annual energy savings was cited.

A Survey of Food Allergen Control Practices in the U.S. Food Industry

2013 ◽  
Vol 76 (2) ◽  
pp. 302-306 ◽  
Author(s):  
STEVEN M. GENDEL ◽  
NAZLEEN KHAN ◽  
MONALI YAJNIK
Keyword(s):  
Public Health ◽  
United States ◽  
Food Allergy ◽  
Food Allergen ◽  
High Frequency ◽  
Food Industry ◽  
Adverse Reactions ◽  
The United States ◽  
Public Health Issue ◽  
The U.S

Despite awareness of the importance of food allergy as a public health issue, recalls and adverse reactions linked to undeclared allergens in foods continue to occur with high frequency. To reduce the overall incidence of such problems and to ensure that food-allergic consumers have the information they need to prevent adverse reactions, it is important to understand which allergen control practices are currently used by the food industry. Therefore, the U.S. Food and Drug Administration carried out directed inspections of registered food facilities in 2010 to obtain a broader understanding of industry allergen control practices in the United States. The results of these inspections show that allergen awareness and the use of allergen controls have increased greatly in the last decade, but that small facilities lag in implementing allergen controls.

Energy Efficiency in K-12 Schools: A Case Study in Florida

2020 ◽  
Author(s):  
Ganesh Doiphode ◽  
Hamidreza Najafi ◽  
Mariana Migliori Favaretto
Keyword(s):  
Energy Efficiency ◽  
Public Schools ◽  
Energy Consumption ◽  
Energy Savings ◽  
The United States ◽  
Payback Period ◽  
Background Information ◽  
Subtropical Climate ◽  
Institute Of Technology ◽  
K 12

Abstract Buildings are one of the largest energy consumers in the United States. K-12 schools are responsible for nearly 8% of energy consumption by commercial buildings which is equivalent to 1.44% of total annual energy consumption in the country. Understanding the baseline energy consumption of the schools as well as identifying effective energy efficiency measures (EEMs) that result in significant energy savings without compromising occupant’s comfort in a given climate condition are essential factors in moving towards a sustainable future. In a collaboration between Florida Institute of Technology and Brevard Public Schools, three schools are identified for a test study in Melbourne, FL, representing the humid subtropical climate. Energy audit is conducted for these schools and monthly utility bill data as well as background information, end-user’s data and their associated operating schedules are obtained. A detailed analysis is performed on the utility bill data and energy consumption by each end-user is estimated. Several EEMs are considered and evaluated to achieve an improved energy efficiency for the schools. The implementation cost of each EEM and the associated simple payback period is also determined. A study is also conducted to explore possibility of using solar power to cover 50% of energy requirements of each school and the cost and payback period of the project are evaluated. The results of this paper provide insights regarding prioritizing energy efficiency projects in K-12 schools in humid subtropical climates and particularly the state of Florida and help with decision making regarding investment in on-site power generation using solar energy.

Optimization of Equipment Control Parameters to Minimize HVAC Energy Consumption

2011 ◽  
Author(s):  
Aaron P. Wemhoff
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Control Method ◽  
The United States ◽  
Lumped Parameter Model ◽  
Base Case ◽  
Control Parameters ◽  
Household Energy ◽  
Lumped Parameter ◽  
Air Conditioning Systems

Heating, Ventilating, and Air Conditioning Systems (HVAC) consume nearly one-third of household energy in the United States. The optimization of the control parameters in HVAC equipment allows for a reduction in energy consumption. In this study, a supervisory control method is applied to a lumped parameter model of an HVAC system of interest containing a chiller and three dampers. The method determines the choice of control parameters that minimize the energy consumption for 1000 sampled steady-state loads. An energy savings of 39% was achieved using the method in this study compared to the base case.

Investigation on the Effect of Different Channel Geometries of Thermal Wheel for Energy Transfer Efficiency

2021 ◽  
Author(s):  
A.M.C.K. Polgolla ◽  
◽  
H.M.D.P. Herath ◽  
M.D.A. Wickramasinghe ◽  
M.A. Wijewardane ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Pressure Loss ◽  
Energy Savings ◽  
High Efficiency ◽  
The United States ◽  
Total Energy Consumption ◽  
Final Energy Consumption ◽  
Air Conditioning Systems ◽  
Air Streams

Inside buildings, heating, ventilation, and air conditioning systems are utilized to provide a comfortable environment. However, they account for a significant percentage of overall total energy consumption: in the United States, they account for about 50% of building final energy consumption and 20% of total energy consumption. [1]. The installation of a heat exchanger between the exhaust and fresh air streams is critical, owing to the significant energy savings. [2], [3]. Thermal wheels have recently gotten a lot of attention because of their high efficiency and low-pressure loss when compared to other energy recovery solutions [4]. The goal of this research is to give a comprehensive study and optimization of Thermal wheel design, with the goal of enhancing sensible effectiveness while reducing pressure loss based on channel shape.

scholarly journals COMPARISON ON ENERGY SAVING: GREEN ROOF AND GREEN WALL

2019 ◽  
Vol 17 (9) ◽  
Author(s):  
Shazmin Shareena Ab. Azis ◽  
Ibrahim Sipan ◽  
Maimunah Sapri ◽  
Nurul Syakima Mohd Yusoff ◽  
Hariati Abdullah Hashim
Keyword(s):  
Carbon Dioxide ◽  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Green Building ◽  
Green Roofs ◽  
Vegetation Coverage ◽  
Economic Aspects ◽  
Green Walls ◽  
Reducing Energy

Green building conveys undeniably numerous benefits to the environment, social and economic aspects. The most substantial benefit of green building is energy conservation. Green roofs and green walls are amongst the green components that are synonymous with green building. These green components are similar in nature as both are based on the concept of vegetation coverage on buildings. Vegetation is a well-known natural medium that performs the photosynthesis process where it releases molecular oxygen and removes carbon dioxide from the atmosphere. Many studies have proved that these two green components are efficient in reducing energy consumption of a building. Therefore, this study aims to examine and compare the annual energy savings conveyed by green roofs and green walls on residential buildings in Malaysia. The findings indicated that green walls provide greater annual energy savings than green roofs. The result shows that green walls are able to provide higher annual electricity savings for residential buildings at RM166 compared to green roofs, which provide savings of only RM139.

scholarly journals Daylight Saving Time Policy and Energy Consumption

2021 ◽  
Author(s):  
Sinan Küfeoğlu ◽  
Şahincan Üçler ◽  
Furkan Eskicioğlu ◽  
E. Büşra Öztürk ◽  
Hao Chen
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Interrupted Time Series ◽  
The United States ◽  
Daylight Saving Time ◽  
Daylight Saving ◽  
Measurable Amount ◽  
The Impact ◽  
North And South ◽  
Daily Load

Abstract Daylight Saving Time is argued to be effective in saving energy. Turkey is one of the few countries that annulled the clock changes and remained in the summertime zone in 2016. This paper uses Multiple Linear Regression and Interrupted Time Series methods to study the impact of clock changes on energy consumption and load shift. We use historical energy consumption, electricity prices, and relevant atmospheric essential climate variables data in Turkey between 2012-2020. This paper shows that the Daylight Saving Time policy does not lead to a measurable amount of energy savings. Furthermore, it does not cause a noticeable continuous daily load shift throughout the year. We also claim that our findings should be applicable to those countries such as the United States, India, Japan, Australia or China and as well as continents of Africa and South America, whose latitudes are in between 42.0° north and south of the equator.

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