Selectool Manual

SelecTool Manual

1. Introduction

SelecTool SW is a WEB based application for unit selection from Dadanco's product range based on user's input parameters.

The application combines:

HTML programming routines for client-server web communication and client side displays
Client JavaScript language routines for client side input checks and displays
Server side PHP (C/C++ look-alike) programming language routines for algorithms/calculations
Server side PostgreSQL data base for storing information
Artificial Intelligence (AI) IF...THEN...ELSE rules in order to help the user to select the right combination of input parameters

2. Run procedure

To run the SelecTool SW the user must:

Obtain a login/password from Dadanco Pty Ltd.
Click on "SelecTool" in the main page of Dadanco web site
Enter correct login/password
Follow procedures and web links within the application

3. Options

SelecTool provides an introductory on-line documentation and several selection options:

Operating manual - an explanation of how to run the SelecTool SW
Nomenclature/Legend - an explanation of symbols used in the SelecTool SW
Previous Selections - a list of previous selections obtained from database
Multiple Unit Input Form - an input parameter form for selections where latent and sensible loads are known and the secondary air cooling capacity tolerance is selected
Single Unit Performance Input Form - an input parameter form for selections where primary air quantity is known
Camel File Selection - client file upload, server file search and display of all file zones with a zone multiple unit input parameter form selection
Camel Form Selection - an input form with Camel parameters to be entered manually if a Camel hardcopy exists
Induction Diffuser Input Form - an input parameter form for selections where only primary air is used

Operating manual

The manual provides procedures of how to run the SelecTool SW with input and output parameters used. It is very similar to explanations presented here but it has a more detailed structure.

Nomenclature/Legend

The nomenclature is given in the table below. It combines the symbols used in input and output forms/tables.

h	specific enthalpy
h_fg	latent heat of vapourisation of water = 2450kJ/kg
J, kJ	Joule, kiloJoule
K	degree Kelvin
L,L/s	litre, litre per second
°C	degree Celsius
Pa, kPa	Pascal, kilopascal
q	room load or unit capacity, W
q_l	room latent load or unit latent capacity, W
q_s	room sensible load or unit sensible capacity, W
q_tot	room total load or unit total capacity, W
Q_PA	primary air quantity, L/s
Q_SA	supply air quantity, L/s
Q_SCA	secondary air quantity, L/s
Q_SCHW	secondary chilled water quantity, L/s
rh	relative humidity, %
RA	room air
PA	primary air
SCA	secondary coil air
SA	supply air
SCHW	secondary chilled water (F=flow; R=return)
t_PA	primary air temperature, °C
t_RA	average room temperature, °C
t_SA	average supply air temperature, °C
t_SCHW	secondary chilled water temperature, °C
w	moisture content/ specific humidity, g/kg
W, kW	Watt, kilowatt

Previous Selections

This option provides a list of all unit type selections that have been completed in the past by the user:

All selections,
Multiple unit selection,
Single unit performance selection,
Induction diffuser selection.

The user can select the date as a database search parameter.

By selecting any of the above unit type selections the user gets a list of specified selection types for a chosen period with the following parameters: date, customer, project and zone names.

By clicking on a particular zone the selection input and output parameters for that zone selection are listed.

Multiple Unit Input Form

This form provides data fields as inputs with their range (if applicable) and a note "required" or "optional" to indicate whether or not the value must be entered/selected.

There are two types of inputs:

Character/number data field (if range is applicable and the value entered is out of range or empty or not a number, if it has to be a number, the form will be displayed again with a warning about all fields with wrong values)
Drop down menus with lower and upper limits and fixed values to be selected (range is incorporated in lower/upper limits and the form will be displayed again with warning only if lower limit is greater than the upper one)

A form with the following group input parameters is displayed first:

Identification parameters (customer, project, zone - required),
Atmospheric pressure (default provided - required),
Number of units per zone (required),
Zone/Room loads (latent, sensible, total - required; if only two are entered, the third will be calculated),
Room air parameters (dry bulb temperature, relative humidity - required within specified range)

With the above inputs entered the user is required to submit the form for calculation of the zone/room dew point temperature from room air parameters (temperature and humidity). This step is important since the calculated dew point temperature is related to the value of the primary air dry bulb temperature which needs to be entered during the next stage. If selected t_PA is lower than the calculated room air dew point temperature, primary air plenum insulation is required to avoid condensation.

Once the dew point temperature is calculated the user gets an extended input parameter form with all already entered parameters displayed, the calculated dew point temperature displayed in a read-only format and empty fields for additional input parameters to be entered (Note: the user can always type in the new room/zone air temperature and/or humidity values and submit the input parameter form which will cause a dew point temperature re-calculation during the selection process):

Primary air parameters (dry bulb temperature, relative humidity - required within specified range)
Unit type (required with a drop down menu and a click-on selection)
Secondary chilled water temperature (required within specified range)
Secondary chilled water quantity per unit (required with lower/upper drop down range)
Primary air static pressure at unit plenum (required with lower/upper drop down range)
Unit size (required with lower/upper drop down range)
Coil height given in number of tubes high in a row (optional within specified range)
Secondary air cooling capacity tolerance (required within specified range)

Only allowed combinations of several unit types with different number of units can be selected per one run.

If a single unit type is selected and the number of units per zone is entered as "1" the selection results will be for a single unit.

The user can clear the typed input parameters using the "Clear" button at any time during selections but only parameters entered before submission will be cleared; default values and parameters already calculated during previous submissions cannot be cleared using "Clear" button but can always be changed by new typing/selecting.

Once the input form is submitted the server database program starts calculations and the user soon gets a list of selections. Desired selections can be marked for permanent saving by clicking on a button next to each selection. All selections can be saved by clicking on a "save all" button. If no selection is marked nothing will be saved. The user will be warned about the maximum number of selections that can be saved (i.e. 100) to avoid saving an extremely large number of selections. Once the selections for saving are marked (if any) the user will select between "Save" and "No save" buttons and will submit "Save"/"No save" selections. If neither "Save" nor "No save" buttons are selected selections will not be kept in the database.

Single Unit Input Form

This form provides the following data fields as inputs with their range and a required/optional note:

Identification parameters (customer, project, zone - required),
Atmospheric pressure (default provided - required),
Room air parameters (dry bulb temperature, relative humidity - required)

The same procedure for the dew point temperature calculation is done here as described for the multiple unit selection. Then an extended input parameter form with the additional input parameters is obtained:

Primary air parameters (dry bulb temperature, relative humidity and primary air quantity - required within specified range)
Unit type (required with a drop down menu and a click-on selection)
Secondary chilled water temperature (required within specified range)
Secondary chilled water quantity per unit (required with lower/upper drop down range)
Primary air static pressure at unit plenum (required with lower/upper drop down range)
Unit size (required with lower/upper drop down range)
Coil height given in number of tubes high in a row (optional within specified range)

The rules for form "clear" and selection "save" procedures are also applicable here as described for the multiple unit selection.

Camel File Selection

By choosing this option the user will be prompted to specify the Camel file that needs to be uploaded to the server. If the file is in a regular Camel format the user will get a list of external and internal zones with the following parameters found in the file and/or calculated from file parameters so that comparison of parameters found in the file and displayed can be done before zone selection process continues:

Internal room/zone:
- Room/zone name (found in file)
- Room air dry bulb temperature and relative humidity (found in file)
- Floor area (m²) (found in file)
- Latent load (adjusted room latent heat) and sensible load (adjusted room sensible heat) (found in file) (Note: total load is automatically calculated by adding latent and sensible loads)
- Number of units per zone (calculated from floor area)
External room/zone:
- Room/zone name (found in file)
- Zone/surface width (found in file)
- Room air dry bulb temperature and relative humidity (found in file)
- Latent load (effective room latent heat) and sensible load (effective room sensible heat) (found in file) (Note: total load is automatically calculated by adding latent and sensible loads)
- Number of units per zone (calculated from surface width)

The selection process starts by clicking on a certain zone name. The program provides an input form, the same as that in the multiple unit selection, with Camel file parameters already entered, room air dew point temperature calculated and primary air temperature and relative humidity suggested. The user will need to enter other required parameters and to follow the same procedures as those in the multiple unit selection.

Camel Form Selection

If the user wants to use the Camel hard copy for unit selections the first level Camel input form will need to be filled in with the customer/project name and number of internal and external zones.

The second level Camel input form will then be provided for entering the values of the same parameters mentioned in the above Camel file internal/external zone parameter list.

The selection will then follow procedures mentioned in the Camel file and multiple unit selection process.

Induction Diffuser Input Form

This form provides the following data fields as inputs with their range (if applicable) and a note required or optional (if the range is wrong or empty the user will be warned to select the appropriate value(s)):

Identification parameters (customer, project, zone - required),
Atmospheric pressure (default provided - required),
Number of diffusers per zone (required),
Zone/Room loads (latent, sensible - required),
Room air parameters (dry bulb temperature, relative humidity - required)

Primary air parameters (dry bulb temperature, relative humidity - required)
Diffuser type (required)
Primary air static pressure at diffuser plenum (required)
Diffuser size (required)

The rules for form "clear" and selection "save" procedures are also applicable here as described for the multiple unit selection.

4. Output results

SelecTool provides the following outputs:

Display table with input parameters entered in input forms
Display table with output parameters - calculated and database values
Text file with all input and output parameters which can be downloaded and imported into other SW packages (Excel, etc)

5. SelecTool features

SelecTool has the following main features:

Fast selection process
Reliable selection process (i.e. the variable input parameters are limited to certain ranges and if their relative values do not match logical process equations the AI rules/corrections are applied and parameter modifications suggested)
Accurate selection process, i.e. the algorithm allows an accuracy of less than 1%
Easy web page-to-page access (back, forward, jump)
marking and saving favoured selections in database from a list of all selections displayed for one run (Note: the number of selections per one run in excess of a predefined displayed maximum number/threshold (i.e. 100) will not be allowed for saving - the user will be warned to decrease the number of selections for saving)
Extensive data base search for previous selections based on several parameters (date, project, zone, etc)
Display of both input parameters and output selection data and file data conversions (i.e. text and/or Excel format, etc.)