HOTEL SOLUTION Reservation and energy management User's guide CM110602en 09/30/2008 Building Technologies
Siemens Switzerland Ltd. Building Technologies Group International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.siemens.com/sbt © 2005-2008 Siemens Switzerland Ltd.
Table of contents 1 General notes ............................................................................................... 5 1.1 Purpose ........................................................................................................ 5 1.2 Terms and abbreviations .............................................................................. 5 1.3 Typographical conventions ........................................................................... 5 2 Reservations strategy ...........
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1 General notes 1.1 Purpose This document describes the reservation and energy management component of the Siemens HOTEL SOLUTION software. It is implemented in the user interface in the Energy Management menu. For hotels with front-office systems that do not support this function, it is possible to change the temperature setpoint manually in whole groups of rooms at a time without taking account of reservations. 1.
2 Reservations strategy The purpose of the Siemens HOTEL SOLUTION reservations strategy is to support the management of energy. To save as much heating and/or cooling energy as possible, the energy management system is used to assign different temperature setpoints to vacant and allocated guest rooms. Guests expect to find their rooms at "room temperature" as soon as they check in. To save costs while maintaining the comfort of guests, the rooms need to be preheated or pre-cooled accordingly.
The allocation of rooms is governed by the following: All energy groups are assigned a priority number, which determines the order of the energy groups from which to allocate the rooms. Rooms in another energy group are only allocated when all the rooms of one energy group have been allocated. This ensures demand-based use of the separate heating circuits. The diagram below should clarify this. Rooms Floors 6245Z01E e.g.
2.2.1 Priorities The priorities are assigned and/or modified in the Energy Management menu of the HOTEL SOLUTION user interface. Priority-numbers from 0 to 100 can be assigned. Priority 0 is used for rooms which will not appear in the list of suggested rooms (e.g. rooms being redecorated, public areas etc.). The lowest actual priority-number is therefore 1 and the highest is 100. A room with a priority number of 10 will be assigned before a room whose priority number is 9.
2.3 FOS and Siemens HOTEL SOLUTION For hotels already installed with front-office systems such as Hogatex, it will be noted that these products have their own reservation algorithms. However, as they do not have an energy management component, the data needs to be transferred. The flow of data always applies to all room types (single rooms, double rooms or suites etc.
2.4 Changing the room operating modes The hotelier should have the facility to modify the operating mode of any room in Standby mode at any time vie the user interface. This ensures that the rooms can be brought to the appropriate temperature if an unexpectedly large number of guests want to check in on the same day.
2.5 Summary In conjunction with the energy management component of the HOTEL SOLUTION system, flexible heating and cooling periods can be programmed in the guest rooms of a hotel. This leads to reduced costs without impairing quality. The priority-based controls can be used to specify which rooms are to be allocated and how often. Algorithms can also be used for an automatic change of priorities (not yet available). Most front-office programs use their own reservation algorithms.
3 Energy management without FOS The energy management component of the HOTEL SOLUTION system is designed to reduce the energy costs associated with heating and cooling guest rooms. With their intelligent software, the room controllers provide some options themselves. This section contains information about the possibilities offered by the room controllers and describes how the hotel staff can manipulate them to obtain maximum benefit.
Individual setpoint adjustment Temperature setpoints are assigned throughout the hotel. However, the Room Overview dialog box in the HOTEL SOLUTION user interface allows you to modify this setpoint individually for each room. In this way, the individual requirements of each guest can be satisfied. Summary The room controller options discussed here can only be used, of course, in hotels with heating and cooling systems with the appropriate control system and controls.
Example of energy groups • A hotel is divided into three separate and independent buildings ("a 3-house hotel"). The obvious approach is to create three energy groups, House1, House2 and House3. • All the guest rooms in the first building are assigned to the energy group "House1", those in the second building to "House2" and so on. 3.2.2 Example: Energy management without FOS link The complete process is described below on the basis of an example.
The following describes the individual steps required. The description includes examples for clarification. Please refer to the user's guide to the HOTEL SOLUTION User Interface for information on how to make additional settings. Allocate energy groups 1 Assign all rooms to suitable energy groups. If the existing energy groups do not meet the requirements, set up others. Rooms should be assigned to groups bearing in mind which rooms will be dealt with together.
• The setpoints are assigned as follows: Room state Temperature profile Setpoint Heating strategy Comfort Winter 22 °C Heating only Standby A Winter 19 °C Heating only Standby B Winter 17 °C Heating only Standby C Winter 13 °C Heating only • The temperature profile Winter is activated via System | Temperature Profiles... • In this case, the room state must not be set by default to Standby C when a guest checks out.
When you have finished making all the changes, the following message will be displayed for information: Fig. 3-4: Message about the setpoint changes Acknowledge with Yes if you want to modify the room state of other energy groups. Click No if you do not want to change any more room states.
4 Energy management with FOS This section describes how the functions of the energy and reservation management system can be operated from the HOTEL SOLUTION user interface. This applies to energy management systems combined with a front-office system which exchanges reservation data with the Siemens HOTEL SOLUTION system.
4.3 Menu The energy management software is integrated in the HOTEL SOLUTION user interface. It contains the following options: Fig. 4-1: Energy Management menu The Energy Management menu is abbreviated below to EM for improved legibility. EM | Edit Energy Groups... Opens the dialog box for management of the energy groups. EM | Room Energy Group Assignment… Opens a dialog box in which you can assign rooms to energy groups.
4.4 Dialog boxes 4.4.1 "Control of Energy Groups" dialog box This dialog box is used to define and review the order of priority of the energy groups. The following describes the operations associated with each element of the dialog box. Fig. 4-2: "Control of Energy Groups" dialog box List panes: The list on the left contains all the energy groups with a priority number greater than 0. Priority 0 ("Renovate") is the status for rooms undergoing redecoration or repairs.
4.4.2 "Control of Room Priority in Energy Groups" dialog box This dialog box contains the same elements as the Control of Energy Groups dialog box. The elements operate in the same way, except that the priorities in this dialog box apply to the rooms within an energy group. In addition, this dialog box contains a dropdown list of the existing energy groups. You should first select an energy group from this list.
4.4.3 "Assign Rooms to Energy Groups" dialog box This dialog box can be used to assign the rooms to the energy groups in cases where the original process, when generating the database, was unsuccessful or incorrect. After selecting an energy group, you can then use the Í and Î buttons to add or remove individual rooms in that group. Fig.
4.4.4 "Room State Overview" dialog box The dialog box below contains an overview, showing which room is in which state (operating mode). It also indicates the associated temperature setpoints and actual temperatures. You can print this table in list form, if required. Fig.
5 Background information To benefit from effective savings by use of the Reservation and Energy Management component of the Siemens HOTEL SOLUTION, it is important that the rooms are allocated to guests in the best order in terms of energy efficiency. This section describes the algorithm used by the HOTEL SOLUTION system to create a room list in the optimum order from the point of view of energy efficiency. 5.
6245Z02E The following diagram shows the algorithm used to create suggested room lists. Reservation algorithm Once daily Callup of system link: Read the Data_Exchange_Import table Create a list of all rooms, sorted according to their priorities (sorted room list) For all guest room types (single, double, suite, ...
5.4 Output interface The hotel staff needs a list showing the most energy-efficient order for the allocation of rooms. This list is provided by the output interface. Room number: Indicates the room concerned. Room type: Indicates the type of room. Valid options are shown in the Room_Types table. Normally, these are: Single, Double, Suite etc. Room state: Specifies the current state (operating mode) in the room. This value also represents the temperature setpoint in the room.
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Siemens Switzerland Ltd. Building Technologies Group International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.siemens.com/sbt © 2005-2008 Siemens Switzerland Ltd.
