World Grain - March 2011 - 82

FEEDOPERATIONS

Energy savings
Having a thorough understanding of the monthly power bill can help feed milling companies save money
by Fred Fairchild
Editor’s note: This is the first in a series of articles on energy savings in feed mills. In a future article, we will explore ways to reduce electricity use in the mill.

When looking at ways to conserve electrical energy in operating a feed mill, one must ﬁrst understand what the energy is costing. The cost of electrical energy is normally the highest expense in the operations of the mill. THE ELECTRIC BILL Each plant receives a monthly bill for its electrical use. The different parts of the bill may be presented in various ways depending on the power company’s billing format and the speciﬁc contact with the mill facility. In most cases, the electric bill may be divided into three billable components, the sum of which determines the total cost of the bill. Those three parts are: the total amount of energy used, the rate of use (demand) and how efﬁciently the power is used (Power Factor). In simple form, a monthly electric bill may look like this: Energy Use: 1454400 KWH /KVA @ $0.2704 = $39,326.98 Rate of Use (Demand): 3229 KVA @ $7.30 per month = $23,571.70 Demand Adjustment of 4% (Power Factor): $23571.70 x .04* = $942.87 TOTAL CHARGES = $63,841.55

*The power factor for the billing period was 0.86. The contract requires that the power factor be 0.9 or greater to avoid a power factor penalty (added charge) on the bill. Based on the bill, we will take a look at how the costs are determined. POWER FACTOR Power factor is based on the relationship of the two types of currents — reactive and active — required in the electrical system. Reactive current is energy that is needed to energize the ﬁeld of the motor windings. It is energy that is not used up, just transferred back and forth between the motor and the power system each half cycle. This current does not turn the watt-hour meter and therefore is not shown on the amount of energy used. However, the power company lines and equipment must be sized to handle this current load. Active current is the energy used to actually do the work. This current is recorded on the watt-hour meter and is seen on the energy bill as the amount of energy used in the billing cycle. Likewise, the power company lines and equipment must be sized to also handle this current load. The power company does not like to deal with reactive current because they have to generate and transport it, but don’t get paid for it. Due to the characteristics of electricity and its use, a small portion of the reactive current is lost and not returned to the power company. The power company ex-

For more information, see Page 94.

82

March 2011 / World Grain / www.World-Grain.com

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World Grain - March 2011

Table of Contents for the Digital Edition of World Grain - March 2011

World Grain - March 2011
Contents
from the editor-in-chief - Arab revolution of great importance for wheat
CALENDAR OF EVENTS
Australia’s winter crop estimated to increase 19%
With China crop in trouble, wheat surges upward
Port of Novorossiysk grain volumes decline 36.5%
FEFAC welcomes E.U. decision on GMO
Cargill to build new corn processing plant
Joint venture to build new canola crush plant in Canada
CWB purchases lake vessels for grain
E.U. compound feed production increases in 2010
U.S. fl our production in 2010 gains 0.4%
Industry responds to corn amylase approval
Scoular purchases ethanol plant, shuttle facility
Income from operations, sales soar at MGPI
Grain, ethanol boost The Andersons, Inc. to record results
Bunge’s net income rises on strong agribusiness performance
GRAIN MARKET REVIEW - Oilseeds
COUNTRY FOCUS - Focus on the Philippines
Key Facts
Flooding takes toll on Australian grain industry
Single desk survives — for now
What's next for Russia?
A New Vision
Unrest in Egypt
New look for Victam International 2011
Attendance surges at IPE/IFE
Deep in the heart of Texas
Schedule at a glance
Nominations solicited for Milling Operative of the Year
IAOM Conference & Expo - 2011 exhibitor booths
IAOM PRODUCT SHOWCASE
FEED OPERATIONS - Energy savings
Proactive path to PEST MANAGEMENT
Seeking to add customer value
Buhler Technology Group has successful 2010
Stern-Wywiol Gruppe receives prestigious business awards
Perten to supply Turkish Grain Board with Inframatic analyzers
GSI Group launches new customer-centric website
Ocrim supplies Libyan mill
Cargotec to acquire terminal operator systems provider
Eurofi ns appoints new chief scientifi c offi cer
4B Braime opens new subsidiary in Australia
ADVERTISER INDEX
World Grain - March 2011 - World Grain - March 2011
World Grain - March 2011 - 2
World Grain - March 2011 - 3
World Grain - March 2011 - 4
World Grain - March 2011 - Contents
World Grain - March 2011 - from the editor-in-chief - Arab revolution of great importance for wheat
World Grain - March 2011 - 7
World Grain - March 2011 - CALENDAR OF EVENTS
World Grain - March 2011 - 9
World Grain - March 2011 - Port of Novorossiysk grain volumes decline 36.5%
World Grain - March 2011 - 11
World Grain - March 2011 - Cargill to build new corn processing plant
World Grain - March 2011 - CWB purchases lake vessels for grain
World Grain - March 2011 - U.S. fl our production in 2010 gains 0.4%
World Grain - March 2011 - Scoular purchases ethanol plant, shuttle facility
World Grain - March 2011 - Income from operations, sales soar at MGPI
World Grain - March 2011 - Bunge’s net income rises on strong agribusiness performance
World Grain - March 2011 - GRAIN MARKET REVIEW - Oilseeds
World Grain - March 2011 - 19
World Grain - March 2011 - Key Facts
World Grain - March 2011 - 21
World Grain - March 2011 - 22
World Grain - March 2011 - 23
World Grain - March 2011 - 24
World Grain - March 2011 - 25
World Grain - March 2011 - Flooding takes toll on Australian grain industry
World Grain - March 2011 - 27
World Grain - March 2011 - 28
World Grain - March 2011 - 29
World Grain - March 2011 - 30
World Grain - March 2011 - 31
World Grain - March 2011 - Single desk survives — for now
World Grain - March 2011 - 33
World Grain - March 2011 - 34
World Grain - March 2011 - 35
World Grain - March 2011 - 36
World Grain - March 2011 - 37
World Grain - March 2011 - What's next for Russia?
World Grain - March 2011 - 39
World Grain - March 2011 - 40
World Grain - March 2011 - 41
World Grain - March 2011 - 42
World Grain - March 2011 - 43
World Grain - March 2011 - 44
World Grain - March 2011 - 45
World Grain - March 2011 - A New Vision
World Grain - March 2011 - 47
World Grain - March 2011 - 48
World Grain - March 2011 - 49
World Grain - March 2011 - Unrest in Egypt
World Grain - March 2011 - 51
World Grain - March 2011 - New look for Victam International 2011
World Grain - March 2011 - 53
World Grain - March 2011 - 54
World Grain - March 2011 - 55
World Grain - March 2011 - Attendance surges at IPE/IFE
World Grain - March 2011 - 57
World Grain - March 2011 - 58
World Grain - March 2011 - 59
World Grain - March 2011 - 60
World Grain - March 2011 - 61
World Grain - March 2011 - 62
World Grain - March 2011 - 63
World Grain - March 2011 - Deep in the heart of Texas
World Grain - March 2011 - Schedule at a glance
World Grain - March 2011 - Nominations solicited for Milling Operative of the Year
World Grain - March 2011 - 67
World Grain - March 2011 - IAOM Conference & Expo - 2011 exhibitor booths
World Grain - March 2011 - 69
World Grain - March 2011 - 70
World Grain - March 2011 - 71
World Grain - March 2011 - 72
World Grain - March 2011 - 73
World Grain - March 2011 - IAOM PRODUCT SHOWCASE
World Grain - March 2011 - 75
World Grain - March 2011 - 76
World Grain - March 2011 - 77
World Grain - March 2011 - 78
World Grain - March 2011 - 79
World Grain - March 2011 - 80
World Grain - March 2011 - 81
World Grain - March 2011 - FEED OPERATIONS - Energy savings
World Grain - March 2011 - 83
World Grain - March 2011 - 84
World Grain - March 2011 - 85
World Grain - March 2011 - Proactive path to PEST MANAGEMENT
World Grain - March 2011 - 87
World Grain - March 2011 - 88
World Grain - March 2011 - 89
World Grain - March 2011 - Seeking to add customer value
World Grain - March 2011 - 91
World Grain - March 2011 - Perten to supply Turkish Grain Board with Inframatic analyzers
World Grain - March 2011 - 4B Braime opens new subsidiary in Australia
World Grain - March 2011 - ADVERTISER INDEX
World Grain - March 2011 - 95
World Grain - March 2011 - 96
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http://digital.world-grain.com/sosland/wg/2005_01_01
http://digital.world-grain.com/sosland/wg/2004_12_01
http://digital.world-grain.com/sosland/wg/2004_11_01
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_02
http://digital.world-grain.com/sosland/wg/2004_10_01
http://digital.world-grain.com/sosland/wg/2004_09_01
http://digital.world-grain.com/sosland/wg/2004_08_01
https://www.nxtbookmedia.com