Energy and the environment in beet sugar production

2015 ◽  
pp. 697-702 ◽  
Author(s):  
Arne Sloth Jensen ◽  
Bernard Morin
Keyword(s):  
Co2 Emission ◽  
Energy Use ◽  
Dust Emission ◽  
Sugar Production ◽  
Drum Drying ◽  
Volatile Organic ◽  
Beet Pulp ◽  
To Come ◽  
Save Energy ◽  
Steam Drying

In order to reduce the energy use it is useful to divide the different processes in the factory into energy “users” and energy “transformers”. The juice evaporator train is a “transformer”. When designed correctly all ingoing energy will leave the evaporator to be used elsewhere. Drum drying of pulp and the sugar house are “users”, as most energy supplied cannot be recovered. To save energy requires attention to the “users”, and the “transformers” shall be adapted to fit into the system, so they are only transformers. Examples of this are given. In doing so, it is possible to come down to approximately 140–150kWh supplied energy as fuel. This includes making sugar into white sugar, molasses with a purity of around 60%, and drying all the beet pulp. Energy saving offers reduced CO2 emission. Half of all the VOC (volatile organic compounds) leaving a sugar factory comes from the drum drying of pulp. Steam drying, however, produces no VOC and no dust emission to the atmosphere at all.

scholarly journals Odour, dust and non-methane volatile organic-compound emissions from tunnel-ventilated layer-chicken sheds: a case study of two farms

2013 ◽  
Vol 53 (12) ◽  
pp. 1309 ◽  
Author(s):  
Mark Dunlop ◽  
Zoran D. Ristovski ◽  
Erin Gallagher ◽  
Gavin Parcsi ◽  
Robin L. Modini ◽  
...  
Keyword(s):  
Dust Emission ◽  
Ventilation Rate ◽  
Gas Chromatography Mass Spectrometry ◽  
Emission Rates ◽  
Layer Chicken ◽  
Volatile Organic ◽  
Different Seasons ◽  
Odour Emissions ◽  
Cleaning Cycle ◽  
Study Sites

An observational study was undertaken to measure odour and dust (PM10 and PM2.5) emission rates and identify non-methane volatile organic compounds (NMVOCs) and odorants in the exhaust air from two tunnel-ventilated layer-chicken sheds that were configured with multi-tiered cages and manure belts. The study sites were located in south-eastern Queensland and the West Gippsland region of Victoria, Australia. Samples were collected in summer and winter on sequential days across the manure-belt cleaning cycle. Odour emissions ranged from 58 to 512 ou/s per 1000 birds (0.03–0.27 ou/s.kg) and dust emission rates ranged 0.014–0.184 mg/s per 1000 birds for PM10 and 0.001–0.190 mg/s per 1000 birds for PM2.5. Twenty NMVOCs were identified, including three that were also identified as odorants using thermal desorption–gas chromatography–mass spectrometry/olfactometry analysis. Odour emission rates were observed to vary with the amount of manure accumulation on the manure belts, being lowest 2–4 days after removing manure. Odour emission rates were also observed to vary with diurnal and seasonal changes in ventilation rate. Dust emissions were observed to increase with ventilation rate but not with manure accumulation. Some NMVOCs were identified at both farms and in different seasons whereas others were observed only at one farm or in one season, indicating that odorant composition was influenced by farm-specific practices and season.

Understanding intentions to reduce energy consumption at the workplace by the employees: case of a developing country

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Amna Akhound ◽  
Aseem Majeed Rizvi ◽  
Waqar Ahmed ◽  
Muhammad Nadeem Khan
Keyword(s):  
Energy Saving ◽  
Structural Equation ◽  
Energy Use ◽  
Energy Savings ◽  
Theoretical Research ◽  
Equation Modeling ◽  
Survey Method ◽  
Content Type ◽  
Saving Behavior ◽  
Save Energy

PurposeEnergy-saving behavior of individuals is essential to minimize energy use and reduce the emission of toxic gases. This study's actual focus is to find out the determinants of the energy-saving behavior of individuals in the workplace.Design/methodology/approachAs a theoretical research model, the extended theory of planned behavior (TPB) has been used to analyze the determinants of energy-saving intentions. A survey method is used to collect 289 valid data, and structural equation modeling (SEM) is used to analyze the data.FindingsThe final result shows that the variables attitude at home, subjective norm (SN) and descriptive norms positively impact intention to save energy at the workplace. In contrast, the construct attitude and perceived behavior control is insignificant in this research. On the other hand, the personal moral norm (PMN) is a powerful predictor of individual energy-saving intentions at the workplace.Originality/valueThis research provides insights that will help the organizations understand the behavior of individuals at the workplace for energy-saving intentions to formulate such policies that will enhance individuals' practice for energy savings.

A Study on the Power Consumption Patterns of General Hospital Buildings

2015 ◽  
Vol 1092-1093 ◽  
pp. 573-577
Author(s):  
Myung Kil Yeo ◽  
Kang Guk Lee ◽  
Won Hwa Hong
Keyword(s):  
Power Consumption ◽  
General Hospital ◽  
Power Supply ◽  
Energy Use ◽  
Consumption Patterns ◽  
Basic Data ◽  
Energy Usage ◽  
General Hospitals ◽  
Usage Patterns ◽  
Save Energy

The most important part of energy use in hospital buildings is to identify its usage patterns and maintain power supply even in blackout situations, rather than to save energy. This paper presents the power energy usage patterns of general hospitals as basic data for the establishment of countermeasures in blackout situations.

scholarly journals A Basic Study on the Performance Evaluation of a Movable Light Shelf with a Rolling Reflector That Can Change Reflectivity to Improve the Visual Environment

2020 ◽  
Vol 17 (22) ◽  
pp. 8338
Author(s):  
Heangwoo Lee
Keyword(s):  
Performance Evaluation ◽  
Energy Use ◽  
Energy Savings ◽  
Luminance Contrast ◽  
Visual Environment ◽  
Basic Study ◽  
Lighting Energy ◽  
Save Energy ◽  
Indoor Spaces ◽  
A Performance

In recent years, the need for comfortable visual environments in indoor spaces has increased energy use in buildings. There have been diverse studies on using a light shelf to solve this problem. It is an effective system that allows external natural light deep into indoor spaces through reflection. However, prior studies have used light shelves with a fixed reflectivity, and there are few studies on improving the visual environment through light shelf control. Therefore, this study proposes a movable light shelf with a rolling reflector that can change the reflectivity. To achieve these objectives, we conducted a performance evaluation of the system’s ability to save energy and improve the visual environment. This study built a real scale testbed and conducted a performance evaluation by deriving values for lighting energy consumption, uniformity, and luminance contrast depending on the light shelf variables. We conclude that (1) the light shelf system achieved an energy savings of 13.6% and 5.7%, respectively, compared to a fixed type light shelf, whose reflectivity cannot be changed, and a traditional movable light shelf; (2) in terms of improving the visual environment, results suggest that the visual environment could be improved using a light shelf by deriving light shelf variables that disturb indoor uniformity; and (3) the results verified glare generation conditions by deriving luminance contrast caused by the variables of light shelf angle and its reflectivity.

CO2 emission from energy use in India: a decomposition analysis

Energy Policy ◽  
2004 ◽  
Vol 32 (5) ◽  
pp. 585-593 ◽  
Author(s):  
Shyamal Paul ◽  
Rabindra Nath Bhattacharya
Keyword(s):  
Co2 Emission ◽  
Energy Use ◽  
Decomposition Analysis
Sign in / Sign up

Export Citation Format

Share Document