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The framework theory of OTC Model was composed in six sections for calculation in-cluding, sky view factor (SVF), shadow, wind speed, ‘optimal building orientation’ and ‘building energy consumption’ in city scale. Mean radiant temperature (Tmrt) is a key factor of thermal comfort indices (PET, UTCI and ETU). It was determined based on the calculation of ‘mean radiant flux density’ (Sstr). The Sstr is derived by calculating longwave and shortwave radiation fluxes in six directions. Additionally, clothing and the level of activity, personal variables influence outdoor thermal comfort. Work metabolic depends on the age, gender, personal parameter, heart rate or walking speed. SVF and shadow are the key variables in Tmrt estimation. The algorithm of SVF calculations is based on the repeatedly casting shad-ows on a map. SVF analyses were conducted to calculate incoming shortwave radiation, incoming longwave radiation, longwave and longwave radiation from each of the cardinal points.

About

OTC Model

OTC Model

Smart Analysis

OpenSpace

An urban bioclimatic analysis tool

Most of the existing software do not directly connect to the outdoor human comfort. There are various limitations in the existing programs, such as, scale of simulation, accuracy in result, user-friendly interface and duration of calculation time. Regarding these limitations, the idea of developing OTC Model, was emerged to assist designers and researchers to address specific consideration since initial design and research phase. OTC Model provides a comprehensive solution for sustainable analysis in one platform and a wide range of analysis functionality. It is capable of various tasks, including to analyze urban texture, calculate sunlight hours and shadow range, outdoor thermal and wind comfort, estimate optimal building orientation and building energy consumption. OTC Model® Created by Comfable. OTC Model architecture and related software are protected by Canadian copyright law (Registration Number: 1101140)

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Analysis Process

Visualize

Visualize

OTC Model was developed for modeling urban climate such as solar flex, mean radiant temperature, surface temperature, urban wind flow, thermal comfort indices. These indices were calculated to assess the relationship between meteorological, environmental and personal variables, and also study how this relationship affects human health and activities. Results of analyses are presented in a graphical format for easy interpretation.

Feature

OTC Model 1.5

Thermal Comfort

OTC Model calculates a wide range of outdoor thermal comfort indices including Universal Thermal Climate Index (UTCI), Physiological Equivalent Temperature (PET), and Universal Effective Temperature (ETU) to evaluate effect of micro-climate on comfort.

Wind Comfort (OTC Model 1.5)

A wind comfort analysis assesses the comfortability and degree of safety around the buildings. Wind comfort studies consists of combining statistical meteorological data, aerodynamic information and a comfort criterion.

Sunlight Hours

OTC Model can be used to visualize how many hours of sunlight will fall on a given surface of model.

Energy Consumption (OTC Model 1.5)

OTC Model analysis the effects of urban layout on urban energy system.

Shadow Range

Shadow range diagrams, also known as butterfly diagrams, are a simple way to visualize the shadows that occur over a range of times for a given period.

Building Orientation (OTC Model 1.5)

OTC Model Analysis provide a great tool for an estimate optimal building orientation.

Samples

Interface & Sample Projects

Main Interface

Main Interface

Main Interface

otcmodel

Clothing insulation calculator

Clothing insulation calculator

Clothing insulation calculator

otcmodel

Urban Space Builder

Urban Space Builder

Urban Space Builder

otcmodel

Shadow Range

Shadow Range

Shadow Range

otcmodel

Thermal Comfort

Thermal Comfort

Thermal Comfort

otcmodel

Sunlight Hours

Sunlight Hours

Sunlight Hours

otcmodel

Team

Scientific Developer

Dr. Alireza Monam

Dr. Alireza Monam / Scientific Developer

CEO and Co-Founder of Comfable. Research mostly focused on urban climate and energy efficiency in open space.

Dr. Neda Ghazizadeh

Dr. Neda Ghazizadeh / Scientific Developer

COO and Co-Founder of Comfable. Research mostly focused on social issues in urban space, sustainable urban landscape and Building Information Modelling.

ABOUT US

Comfable is a Canadian research and development firm that uses an array of scientific capabilities to create comfortable and sustainable environments. Comfable is offering specialized services in advanced environmental modeling studies, develop custom professional applications for analyzing human-environment interactions and monitoring of urban environment. Comfable assists clients to save money and time, and achieve a safer, better and more sustainable built environment. Research and innovation are a combination of expertise and creativity in Comfable. Comfable is pleased to develop OTC Model®. More than one hundred scientist and researcher use OTC Model® to analyses urban space.

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Installation and Starting

OTC Model® was developed for modeling urban climate. It is available as a stand-alone application using Matlab Compiler on PC (Windows) platforms. The following descriptions explain how to set up the program. The Interface runs under WINDOWS XP/Vista/7/8 64-bit platforms. OTC Model® is freeware, but not free software. Personal, educational and professional use is allowed.

 

1. Install the MCR (MATLAB Compiler Runtime). This can be downloaded from the Mathworks webpage.(http://www.mathworks.de/products/compiler/mcr/index.html)

1.1. You can go to the second section If you already have MCR 8.1 installed. You can check which version of MCR you have by writing "mcrversion" at the MATLAB prompt. 

1.2. Please select the Windows version of MCR (R2013a - Windows 64-bit).

 

2. Download OTC_Model_1_4_0_64bit.zip (Compress file) from Download page of OTCmodel.com

2.1. The download link is at the bottom of this page.

 

3. Unpack the downloaded zip file.

 3.1. Decompress the downloaded file (*.zip) using an appropriate archive manager. We recommend using "WinRaR"  www.rarlab.com  or "WinZip" www.winzip.com.

 

Starting program

1. Open "OTC_Model_1_4_0_64bit" directory where the program files were located.

2. Double click on the file "OTC_Model_1_4_0_64bit.exe".

3. After clicking the exe, it takes from 60 - 120 seconds to appear.

 

OTC_Model_1_4_0_64bit.zip (MCR R2013a) - 7452 kB

 

 

Revision History 

OTC Model 1.0 (August 15, 2012)

  • Calculation of Tmrt based on MENEX 2005
  • Calculation of UTCI

OTC Model 1.1 (October 10, 2012)

  • Modeling the radiation fluxes
  • Calculation of Tmrt taking into account solar radiation
  • Input urban Parameter
  • Rewrite VBA code into Matlab 2012

OTC Model 1.2 (November 5, 2012)

  • Input online data
  • Input standard weather data file (EPW)
  • Input personal parameter
  • Daylight-saving time adjustment
  • Calculation of work metabolic
  • Calculation of PET
  • Calculation of Global Solar Radiation
  • Long term simulation

OTC Model 1.2.1 (January 15, 2013)

  • Bug: Display “-“ in UTC (Coordinate Universal Time) for local time based on the current location for time zones in America
  • Bug: Allowed to save the result in “Long term simulation”
  • Feature: Added some notification in interface
  • Enhancement:Update interface design to work in all resolution display
  • Enhancement: Migration from 32-bit to 64-bit
  • Enhancement:Compatibility with windows 

OTC Model 1.2.2 (September 25, 2013)

  • Feature: Calculate the ETU (Universal Effective Temperature)
  • Feature: Add ‘solar absorptivity’ as input data
  • Enhancement: Update main interface
  • Enhancement: Update Plot interface
  • Enhancement: Improve “Suggested clothing insulation” based on gender 

 OTC Model 1.3.0 (October 15, 2013)

  • Feature: Import Study area file as a building raster map
  • Feature: Calculate SVF and Shadow of building raster map
  • Feature: Calculate wind speed based on the wind shear exponent (alpha)
  • Feature: Visualisation of OTC Model results using OTC map
  • Enhancement: Select receptor location
  • Enhancement: Update OTC plot and main interface 

 OTC Model 1.3.1 (November 1, 2013)

  • Bug: Fixed minor bug in main interface, OTC map and OTC Icl
  • EnhancementImproved “Suggested clothing insulation” based on activity
  • Enhancement: Improved calculation of diffuse solar radiation

OTC Model 1.4.0 (December 20, 2013)

  • Bug: Fixed minor bug in Calc. Clothing Insulation
  • Bug: Fixed minor bug in Calculation Long-Term Simulation
  • Feature: Improved selection in “Point of Receptor”
  • Feature: Add “Shadow Range” tool

Web links

Useful Links

ENVI-met

ENVI-met is a three-dimensional microclimate model designed to simulate the surface-plant-air interactions in urban environment with a typical resolution of 0.5 to 10 m in space and 10 sec in time. Typical areas of application are Urban Climatology, Architecture, Building Design or Environmental Planning, just to name a few.

              

RayMan

The RayMan model, developed for the calculation of the mean radiation temperature and thermal indices in simple and complex environments, is based only on data of air temperature, air humidity and wind speed.       

 

Townscope

TownScope is a multi-disciplinary consultancy dedicated to sustainable urban design.

              

Ecotect

Autodesk® Ecotect® Analysis sustainable design analysis software is a comprehensive concept-to-detail sustainable building design tool.              

 

SOLWEIG

The SOLWEIG-model, developed by the Göteborg Urban Climate Group, simulates spatial variations of mean radiant temperature and 3D fluxes of long-wave and short-wave radiation in complex urban settings.

              

DesignBuilder

DesignBuilder is a state-of-the-art software tool for checking building energy, carbon, lighting and comfort performance. Developed to simplify the process of building simulation, DesignBuilder allows you to rapidly compare the function and performance of building designs and deliver results on time and on budget.

              

SkyHelios

SkyHelios is a new tool for applied climatology calculating continuous sky view factor and sunshine duration in high spatial and temporal resolution by using the graphic processor. The storage and export of calculated data is main feature.

              

Vasari

Autodesk® Vasari is an easy-to-use, expressive design tool for creating building concepts. Vasari goes further, with integrated analysis for energy and carbon, providing design insight where the most important design decisions are made.

              

Heliodon

Heliodon is a tool designed to control energetical and visual aspects of natural lighting in urban and architectural projects.

              

UTCI Calculator

UTCI Universal Thermal Climate Index

              

Thermal Comfort Calculator

Thermal Comfort Calculator of Richard DeDear

              

ThermoAnalytics Human Comfort Module

The ThermoAnalytics Human Comfort Module is an advanced plug-in for analyzing human thermal comfort within complex environments: indoor, outdoor, and in transportation systems.

              

Thermal Comfort Tool for ASHRAE-55

A free online tool for evaluating comfort according to ASHRAE Standard-55.

              

Bioklima

Universal tool for bioclimatic and thermophysiological studies

              

Universal Effective Temperature

The thermal index ETU (Universal effective temperature) was developed by Nagano and Horikoshi.

              

OUTCOMES

OUTCOMES shows the shade pattern of a tree and calculates a human comfort index considering the full range of weather variables, the density of a tree that shades a person, and other features of the surrounding neighborhood.

              

ArchiWIZARD

ArchiWIZARD is a thermal simulation program, which is especially suitable for refurbishment projects and for the optimization of the design for the new construction.  

Contact

Get in touch with us

Contact Informations

616 - 341 King Street East Toronto, ON M5A 1L1

(+1) 416 880 8854

Comfable is a Canadian research and development firm that uses an array of scientific capabilities to create comfortable and sustainable environments. Comfable assists clients to save money and time, and achieve a safer, better and more sustainable built environment. Research and innovation are a combination of expertise and creativity in Comfable. Comfable is pleased to develop OTC Model®.

OTC Model® was developed for modeling urban climate. It is available as a stand-alone application using Matlab Compiler on PC (Windows) platforms. The following descriptions explain how to set up the program. The Interface runs under WINDOWS XP/Vista/7/8 64-bit platforms. OTC Model® is freeware, but not free software. Personal, educational and professional use is allowed.

 

1. Install the MCR (MATLAB Compiler Runtime). This can be downloaded from the Mathworks webpage.(http://www.mathworks.de/products/compiler/mcr/index.html)

1.1. You can go to the second section If you already have MCR 8.1 installed. You can check which version of MCR you have by writing "mcrversion" at the MATLAB prompt. 

1.2. Please select the Windows version of MCR (R2013a - Windows 64-bit).

 

2. Download OTC_Model_1_4_0_64bit.zip (Compress file) from Download page of OTCmodel.com

2.1. The download link is at the bottom of this page.

 

3. Unpack the downloaded zip file.

 3.1. Decompress the downloaded file (*.zip) using an appropriate archive manager. We recommend using "WinRaR"  www.rarlab.com  or "WinZip" www.winzip.com.

 

Starting program

1. Open "OTC_Model_1_4_0_64bit" directory where the program files were located.

2. Double click on the file "OTC_Model_1_4_0_64bit.exe".

3. After clicking the exe, it takes from 60 - 120 seconds to appear.

 

OTC_Model_1_4_0_64bit.zip (MCR R2013a) - 7452 kB

 

 

Revision History 

OTC Model 1.0 (August 15, 2012)

OTC Model 1.1 (October 10, 2012)

OTC Model 1.2 (November 5, 2012)

OTC Model 1.2.1 (January 15, 2013)

OTC Model 1.2.2 (September 25, 2013)

 OTC Model 1.3.0 (October 15, 2013)

 OTC Model 1.3.1 (November 1, 2013)

OTC Model 1.4.0 (December 20, 2013)

ENVI-met

ENVI-met is a three-dimensional microclimate model designed to simulate the surface-plant-air interactions in urban environment with a typical resolution of 0.5 to 10 m in space and 10 sec in time. Typical areas of application are Urban Climatology, Architecture, Building Design or Environmental Planning, just to name a few.

              

RayMan

The RayMan model, developed for the calculation of the mean radiation temperature and thermal indices in simple and complex environments, is based only on data of air temperature, air humidity and wind speed.       

 

Townscope

TownScope is a multi-disciplinary consultancy dedicated to sustainable urban design.

              

Ecotect

Autodesk® Ecotect® Analysis sustainable design analysis software is a comprehensive concept-to-detail sustainable building design tool.              

 

SOLWEIG

The SOLWEIG-model, developed by the Göteborg Urban Climate Group, simulates spatial variations of mean radiant temperature and 3D fluxes of long-wave and short-wave radiation in complex urban settings.

              

DesignBuilder

DesignBuilder is a state-of-the-art software tool for checking building energy, carbon, lighting and comfort performance. Developed to simplify the process of building simulation, DesignBuilder allows you to rapidly compare the function and performance of building designs and deliver results on time and on budget.

              

SkyHelios

SkyHelios is a new tool for applied climatology calculating continuous sky view factor and sunshine duration in high spatial and temporal resolution by using the graphic processor. The storage and export of calculated data is main feature.

              

Vasari

Autodesk® Vasari is an easy-to-use, expressive design tool for creating building concepts. Vasari goes further, with integrated analysis for energy and carbon, providing design insight where the most important design decisions are made.

              

Heliodon

Heliodon is a tool designed to control energetical and visual aspects of natural lighting in urban and architectural projects.

              

UTCI Calculator

UTCI Universal Thermal Climate Index

              

Thermal Comfort Calculator

Thermal Comfort Calculator of Richard DeDear

              

ThermoAnalytics Human Comfort Module

The ThermoAnalytics Human Comfort Module is an advanced plug-in for analyzing human thermal comfort within complex environments: indoor, outdoor, and in transportation systems.

              

Thermal Comfort Tool for ASHRAE-55

A free online tool for evaluating comfort according to ASHRAE Standard-55.

              

Bioklima

Universal tool for bioclimatic and thermophysiological studies

              

Universal Effective Temperature

The thermal index ETU (Universal effective temperature) was developed by Nagano and Horikoshi.

              

OUTCOMES

OUTCOMES shows the shade pattern of a tree and calculates a human comfort index considering the full range of weather variables, the density of a tree that shades a person, and other features of the surrounding neighborhood.

              

ArchiWIZARD

ArchiWIZARD is a thermal simulation program, which is especially suitable for refurbishment projects and for the optimization of the design for the new construction.