Building automation â impact on energy efficiency - Siemens ...

More documents

Recommendations

Info

Remarks of Siemens This section outlines how Siemens interprets the functions and processing functions according to EN 15232:2012. 8. The pump is only released for demand. With proportional Δp: Pump solutions with an external differential measurement (e.g. based on the effective load by the consumer) are more expensive overall. They do, however, allow for more precise pump control than pumps with integrated pressure control equipment. Furthermore, the risk of under-provisioning individual consumers is reduced. 28
AUTOMATIC CONTROL 1 HEATING CONTROL BT Reason for energy savings 1.3 Control of distribution network hot water temperature (supply or return) Similar function can be applied to the control of direct electric heating networks 0 No automatic control The highest design temperature of all consumers is continuously provided in distribution, resulting in significant energy losses under part load conditions. 1 Outside temperature-compensated control Action lower the mean flow temperature 2 Demand-based control E.g. based on indoor temperature; actions generally lead to a decrease of the flow rate 1.4 Control of distribution pumps in networks The controlled pumps can be installed at different levels in the network Distribution temperature is controlled depending on the outside (corresponding to the probable temperature demand of the consumers). This reduces energy losses under part load conditions. Distribution temperature depending on the room temperature (controlled variable). It considers heat sources in the room as well (solar irradiance, people, animals, technical equipment). Keeps energy losses under part load conditions at an optimum (low). 0 No automatic control No savings, since electrical power for the pump is drawn continuously. 1 On off control To reduce the auxiliary energy demand of the pumps 2 Multi-stage control To reduce the auxiliary energy demand of the pumps 3 Variable speed pump control With constant or variable Δp and with demand evaluation to reduce the auxiliary energy demand of the pumps 1.5 Intermittent control of emission and/or distribution One controller can control different rooms/zones having same occupancy patterns Electrical power for the pump is drawn only as required – e.g. during occupancy periods or in protection mode (frost hazard). Operating at a lower speed reduces power consumption of multi-speed pumps. 8 a) With constant Δp: Pressure differential does not increase at decreasing load when maintaining a constant pressure differential across the pump. The pump speed is reduced under part load conditions, which lowers power consumption. b) With proportional Δp: Pressure differential across the pump drops as the load decreases. This provides additional reductions in speed and electrical power under part load conditions. 0 No automatic control No savings, since emission and/or distribution are permanently in operation. 1 Automatic control with fixed time program To reduce the indoor temperature and the operation time 2 Automatic control with optimum start/stop To reduce the indoor temperature and the operation time 3 Automatic control with demand evaluation To reduce the indoor temperature and the operation time Savings in emission and/or distribution outside the nominal operating hours. Additional savings in emission and/or distribution by continuously optimizing the plant operating hours to the occupancy times. The operating time and/or the temperature setpoint for emission and/or distribution is determined based on consumer demand. This can be accomplished via the operating mode (Comfort, PreComfort, Economy, Protection). 29
Page 1: Building a
Page 4 and 5: 6.3 Services.......................
Page 6 and 7: 1.2 What constitutes energy efficie
Page 8 and 9: The consequences include an increas
Page 10 and 11: Update existing buildings Short-ter
Page 12 and 13: German industry can make a number o
Page 14 and 15: Example: Supply and prices The grow
Page 16 and 17: Consequences of the EPBD: To meet t
Page 18 and 19: Content of EN 15232 Standard EN1523
Page 20 and 21: 4 The EN 15232 standard in detail E
Page 22 and 23: Rooms represent the source of energ
Page 24 and 25: Remarks of Siemens This section out
Page 58 and 59: Technical home and building managem
Page 60 and 61: 4.2 Building <stro
Page 72 and 73: 4.2.1 Procedure for meeting an effi
Page 74 and 75: 4.3 Calculating the impact<
Page 76 and 77: The calculation of the impa
Page 78 and 79:
Simplified calculation method The B
Page 80 and 81:
In efficiency class C, the differen
Page 82 and 83:
Hospital Time of day Hotel Restaura
Page 84 and 85:
4.4 Overall BACS efficiency factors
Page 86 and 87:
4.4.2 Overall BACS efficiency facto
Page 88 and 89:
4.4.4 Sample calculation for an off
Page 90 and 91:
4.5.1 Detailed BACS efficiency fact
Page 92 and 93:
4.5.3 Detailed BAC efficiency facto
Page 94 and 95:
E 3.2 E 3.3 b) identification of ar
Page 96 and 97:
E 4.3 E 4.4 E 4.5 establish pertine
Page 98 and 99:
consumption occur. Log all signific
Page 100 and 101:
E 6 3.6 Review of the energy manage
Page 102 and 103:
License The license confirms that t
Page 104 and 105:
5.2 Customer benefits resulting fro
Page 106 and 107:
6 Energy efficiency from Siemens 6.
Page 108 and 109:
6.1.1.2 Desigo PX The Desigo PX bui
Page 110 and 111:
6.1.1.4 Desigo RXC/RXB/RXL Desigo R
Page 112 and 113:
Straightforward operation and quick
Page 114 and 115:
Control room temperature by use Hea
Page 116 and 117:
6.2.2 Energy Efficiency Calculation
Page 118 and 119:
Advantage Services is a comprehensi
Page 120 and 121:
Phase 2 Implement success The follo
Page 122 and 123:
What is Performance Contracting ? 6
Page 124 and 125:
7 Information and documentation We
Page 126 and 127:
7.2 Document index 7.2.1 Literature
Page 128 and 129:
8 Abbreviations and terms 8.1 Abbre
Page 132:
Siemens Switzerland Ltd Infrastruct
show all

Building automation â impact on energy efficiency - Siemens ...

Create successful ePaper yourself

Delete template?

Save as template?

Building automation â impact on energy efficiency - Siemens ...