Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Chapter 6 ENERGY EFFICIENCY IN MANAGEMENT OF M&E INSTALLATION
• Organizing appropriate maintenance
• Improving power factor
• Use of high efficiency motor and variable speed drive
Energy reduction strategies for motor/pump and drives for the department have categories:
a) IMPROVE POWER FACTOR
The energy losses in electric motor can either be load dependent or load independent. Load
dependent losses such as stator losses, winding losses rotor losses stray losses (mechanical losses).
Load independent such as transmission losses.
b) APPLICATION OF NEW TECHNOLOGIES
• Improve technologies such as Variable Speed Drive(VSD)
• High efficieny motor
6.3 AUDIT CHECKLIST
As for energy audit, the objective is to study and understand the energy consumption pattern. It will
examine where the incoming energy to a premise is being consumed and places where energy is
lost. Besides, it is also to examine the condition of energy consuming equipment. It will identify any
equipment which consumes more energy than what it should be. Based on the survey made,
analysis will be made to identify energy efficiency improvement opportunities and to evaluate the
implementation costs and savings obtained. Steps in energy audit should include:-
a) Interview of facility personnel
b) Facility tour
c) Document review
d) Utility analysis
e) Measurement of energy consumption
f) Identification of energy saving measures
g) Economic analysis
h) Report of findings
Energy audit can be categorized into the followings:-
a) Preliminary or walk through audit
b) Detailed audit
c) Investment grade audit
The first is preliminary audit alternatively called a simple audit, screening audit or walk-through audit,
which is the simplest and quickest type of audit. It involves minimal interviews with site operating
personnel, a brief review of facility utility bills and other operating data, and a walk-through of the
facility to become familiar with the building operation and identify glaring areas of energy waste or
inefficiency. Typically, only major problem areas will be uncovered during this type of audit.
Corrective measures are briefly described, and quick estimates of implementation cost, potential
operating cost savings, and simple payback periods are provided. This level of detail, while not
sufficient for reaching a final decision on implementing proposed measures, is adequate to prioritize
energy efficiency projects and determine the need for a more detailed audit.
6-4 March 2009