oTilt is an online tool for quickly determining the optimum tilt angles for solar collectors. Site can be located in an integrated Google map, searching it using keywords (e.g. Central Park, New York) or by directly entering latitude and longitude. oTilt determines the optimum monthly, seasonal, half-yearly and fixed tilt angles for solar collectors at selected site location along with respective energy collection during these spans. Results are presented in the form of a table. Screen Shots
solar radiations, radiations on tilted surface, optimum tilt angle, optimum pitch angle, collector slope
Methodology and validation of results is given on website
No special expertise needed.
More than 100.
Consulting firms, architects, engineers, researchers and students etc. working on projects in which solar radiations on tilted surfaces are required.
Site location. It can be picked by using integrated map, entering keywords or by directly giving latitude and longitude.
Tabular output, showing optimum monthly, seasonal, half-year and fixed tilt angle for solar collectors at selected site location along with respective energy collection during these spans.
It is an online application and can be accessed via any website browser. Chrome, Firefox and Opera are recommended.
PHP 5 with cURL and Google Maps API.
Nice user interface with integrated map.
Assume isotropic sky model and do not account for shading and load patterns.
Available online for free at http://www.otilt.com/