Individual metering of energy consumption provides benefits to building owners and tenants. BTU meters allow for more accurate measurement and billing of energy usage, which can lead to reduced consumption by 30% or more. Modern static BTU meters are more accurate than mechanical meters and require less maintenance. Automatic meter reading systems make it easy to remotely collect meter data with minimal manual reading required.
1. Cooling Energy (BTU) Metering
Kamstrup Middle East FZC
PO BOX 73030
Dubai
United Arab Emirates
Jarmo Heikkinen
General Manager
Tel:+971 4 4537337
E-mail: jjh@kamstrup.com
www.kamstrup.com
2. Why to use individual metering?
BTU meters cost money (additional
cost to my project)
BTU meters are not mandatory (I
can proceed without meters)
Using BTU meters brings me extra
work (I need to create tariff
structure)
Somebody needs to operate the BTU
meter system (extra personnel)
3. Why to use individual metering?
Linked houses - Owner-occupied house
Energy consumption for heating and hot tap water
20
MWh/100m2
15
10
5
0
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Platanparken, Individual metering 1991-00
Elmehusene, Individual metering from 07.95 Fig. 1
4. Why to use individual metering?
400
350
300
250 Area - mill. M2
200
150 Energy - PJ
100
50
0
70
75
80
85
90
95
00
19
19
19
19
19
19
20
Denmark’s Energy Consumption on room-heating including
housing area in mill. m2
5. Why to use individual metering?
BTU meters save money
• 30% less energy consumption
according to experience from
real life in Europe
BTU meters save energy
• 30% less cooling power
capacity investment
Using BTU meters enable fair billing
• everyone pay for what they
really decide to consume
• 1oC ~ 5% energy use !
BTU meter system detects failures in
the cooling system
• leakages of water
• leakages of energy
• low delta T indication
6. Why to use individual metering?
BTU Meters give confidence to
own consumption
• according to studies made in
the UAE customers want to
have their own meter
Actual consumption data provides
valuable feed back to used
design recommendations
Automatic Meter Reading system
enables effective meter reading
with minimum personnel
• exact monthly reading
provides accurate statistics
(+/- 1½ day = 10% in
monthly reading!)
• tenant is moving in/out
• tenant is asking help for his
problems
7. Thermal Energy Meter (BTU Meter)
Supply sensor Flow meter
Consumer
Chilled Water
Supplier
Calculator
Return sensor
8. Thermal Energy Meter’s Accuracy
ΔΘ = temperature difference between supply and return lines
qp = permanent (nominal) flow
q = actual flow
-> Accuracy of a meter is not constant but depending on:
1. Temperature difference of application (Bigger
temperature difference gives better accuracy)
2. Sizing of the flow meter (Smaller meter gives better
accuracy)
9. Advantages of modern meters
Mechanical Meters
Rotating impeller inside the flow meter
Static Meters
Ultrasonic, based on ultrasound
Magnetic Inductive, based on magnetic induction
Oscillator, based on water oscillation in flow channel
10. Operating Principles
t2
E = ∫ k ⋅ q ⋅ Δθ ⋅ dt U = B⋅d ⋅v
t1 q = v ⋅π ⋅ d 2 / 4
Energy = V x ΔΘ x k.
π ⋅d
q =U ⋅
4B
t
1
Δt 1
2 2
11. Advantages of modern meters
Static Meter’s Benefits over Mechanical Meters
Measuring ratio 1:200 i.e. Max flow is 200 times bigger than
min flow (1:50 for mechanical meters)
High accuracy on wide measuring area
Inherent to pressure shocks
Limited maintenance need
Long life time
Ultrasonic Meter’s Benefits over Magnetic Inductive
Meters
Not sensitive for Fe-related impurities
Keep high accuracy in real applications (including impurities
in water) longer time without maintenance
14. Large BTU Meter AMR system
Bldg. Y
Bldg. Y
Bldg. X
Bldg. X Administration Office
Energy Meters
Energy Meters AMR Software Tenant Bills
WWW
TCP/IP
Bldg. Z
Bldg. Z
Energy Meters
Bldg. Q
Bldg. Q
Energy Meters
RS 232/
M-Bus Master
TCP.IP Gateway
15. AMR External RF Routers
GSM
Energy
Energy
Utility
Utility Local list C1
C1
Local list R5
GSM
Local list R4
Kamstrup Net list
AMR Local list R3 C1+R1+2+3+
R5
4+5
Local list R2
R4
Local list R1
R3 Cx
R2 RF
Concentrator
R1
Rx
RF Router
M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 Mx
Meter + RF
Module
16. Very small AMR systems
USB Meter Reader
A simple way of wireless meter reading
A complete wireless meter reader put inside a USB stick reading
consumption values for cooling, heat, water and electricity
A power pack or any other USB charger supplies the USB
Reader with operational power
Meter data automatically from meters into the USB meter
reader stick
Meter data automatically from the USM meter reader stick into
the PC
Competitive pricing
Customer segments
Individual (tower) buildings
Small utilities for heat / cooling
Caravan parks
Shopping malls USB Reader with
power pack
17. USB Meter Reader
Three examples
1. You can either read the meter by means of a USB Reader with Power Pack and transfer
the data to the PC program by moving the USB Reader from the Power Pack to the PC.
Meter USB Meter Reader
PC
2. Or you can read the meter by means of a USB Reader with Power Pack and transfer the
data from the USB Reader with Power Pack to the PC program via another USB Reader
which is permanently mounted in the PC. Data processing in
Data processing in
other programs
other programs
• Billing
• Billing
• Analysis
• Analysis
• Energy optimization
• Energy optimization
• Calculation
• Calculation
Meter USB Meter Reader
USB Meter Reader
PC
3. Meter reading via USB Meter Reader and Power Pack.
Transmission of data to the PC program via USB Meter Reader.
Meter USB Meter Reader
PC
18. Kamstrup Products
Meters:
cooling
heat
water
electricity
gas
AMR HW
Modules (M-BUS, Radio, LON, RS232..)
Masters & Concentrators
Modems
TCP/IP Gateways
AMR SW
PC Base Suite
EMS10
Senea
Meter Reading Services
Kamstrup can operate the AMR system
for our customers