Energy Efficiency
Assignment 2
Question 1
a) Known information
Times
Tariff $/kWh
Peak
2pm-8pm working days
Shoulder 7am-2pm & 8pm-10pm working days OR
7am-10pm weekends and public holidays
0.25
0.19
Off Peak
0.11
All other Times
Table 1.1 Electricity Tar
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017
Energy Efficiency & Managing Energy Efficiency
Tutorial Week 2: Worked Solutions
ECONOMIC questions
1.
A 20 W CFL which costs $3.50 is being considered
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057/GSOE9017: Managing Energy Efficiency
Practice exam questions 2015
NOTE: Typically the exam will have 10 questions
Question 1:
In the 2003 report, Towards a Nation
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057& GSOE9017: Managing Energy Efficiency
Tutorial Week 6
1. For a heat exchanger, the amount of heat gained by the cool fluid from the hot fluid, Qch is
given by:
Qc
University of New South Wales
School of PV & RE Engineering
SOLA5057/GSOE9017: Managing Energy Efficiency
Tutorial Week 10
1. Air essentially consists of 20% oxygen and 80% nitrogen, and acts as an ideal gas, when it
is being compressed. Therefore it obey
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 11 - Solutions
Q1. The curves below show the Head vs Flow Rate for a typical pump used to supply domestic
water
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Weeks 4-5 - Worked solutions
1. A refrigerator is 1.8 m high, and all its sides are 0.8 m wide, including the door
University of New South Wales
School of PV & RE Engineering
SOLA5057/GSOE9017: Managing Energy Efficiency
Tutorial Week 10 SOLUTIONS
1. Air essentially consists of 20% oxygen and 80% nitrogen, and acts as an ideal gas, when it
is being compressed. Therefo
Topic 2:
HEAT TRANSFER
A/Prof. Alistair Sproul
SOLA3010 & SOLA9009
Low Energy Buildings and Photovoltaics
1
Heat Transfer Mechanisms
A
Conduction
T2
T1
dQ kA
(T1 T2 )
dt
L
.
L
where dQ/dt (= Q ) is the rate of heat flow [J/s or W], k is the thermal
conduc
Lectures 5 & 6: Energy management control systems, HVAC, coefficient
of performance, energy audits, electricity tariffs, design and rating tools.
Lecture Material Covers:
Energy management control systems; Heating, Ventilation and Air Conditioning (HVAC),
What is energy (efficiency) policy, why do we need it?
Lecture Material Covers:
An introduction to energy policy, why it is needed, and how it is formed. The difference between
technical, economic and market energy efficiency potential. The relationship b
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Weeks 4-5 - Worked solutions
1. A refrigerator is 1.8 m high, and all its sides are 0.8 m wide, including the door
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057/GSOE9017: Managing Energy Efficiency
Tutorial Week 7
1) Jim Clarkson, former Corporate Energy Manager of Southwire Company, which has nearly 50 acres of
industr
UniversityofNewSouthWales
SchoolofPhotovoltaicandRenewableEnergyEngineering
SOLA5057/GSOE9017:ManagingEnergyEfficiency
TutorialWeek7Solutions
1) Jim Clarkson, former Corporate Energy Manager of Southwire Company, which has nearly 50
acres of industrial fa
ENVIRONMENTAL DATA SHEET
PRODUCT: OptiPlex GX280 Mini Tower
Dell Inc.
www.dell.com
SYSTEM DIMENSION AND WEIGHT
Depth, cm
43.8
Width, cm
41.1
Height, cm
18.7
Weight, kg
14.3 depending on options installed
DECLARATIONS AND CERTIFICATIONS
This system receive
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017
Energy Efficiency & Managing Energy Efficiency
Tutorial Week 2
ECONOMIC questions
1.
A 20 W CFL which costs $3.50 is being considered to replace a burn
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 3
HVAC questions
1) A reverse-cycle air-conditioner is rated as follows:
Specifications
Rated Cooling Capacit
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 3
HVAC questions
1) A reverse-cycle air-conditioner is rated as follows:
Specifications
Rated Cooling Capacit
VAPOUR COMPRESSION REFRIGERATION/HEAT PUMP CYCLE
Supplementary Notes
Energy Efficiency SOLA5057/GSOE9017
A.Prof. Alistair Sproul
In many instances we need to understand the workings of the vapour compression
refrigeration/heat pump cycle, as refrigerators
University of New South Wales
School of Photovoltaic and Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Weeks 4-5
1. A refrigerator is 1.8 m high, and all its sides are 0.8 m wide, including the door. It is a
single do
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057 & GSOE9017: Managing Energy Efficiency
Tutorial Week 6
1. For a heat exchanger, the amount of heat gained by the cool fluid from the hot fluid, Qch is
given by:
Q
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 11
Q1. The curves below show the Head vs Flow Rate for a typical pump used to supply domestic
water from rainwa
University of New South Wales
School of Photovoltaic & Renewable Energy Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 8
1) When a fan is used to transfer air through a duct, we really should use a different form of
Bernoullis equ
Heat Transfer Mechanisms
Conduction
Topic 3:
HEAT TRANSFER
T1
T2
SOLA3010 & SOLA9009
dQ kA
=
(T 1 T 2)
dt
L
Photovoltaics in the Built Environment
L
.
1
Thermal
conductivity,
k [W/(m C)],
for various
materials at
room
temperature.
where dQ/dt (= Q ) is th
University of New South Wales
School of PV & RE Engineering
SOLA5057_GSOE9017: Managing Energy Efficiency
Tutorial Week 8
1) When a fan is used to transfer air through a duct, we really should use a different form of
Bernoullis equation, as the air is com
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