Heat Exchanger Performance vs Everwhen

HeatX (Heat Exchanger) App is developed mainly to evaluate performance in a shell and tube heat exchanger in terms of its over all heat transfer U-coefficient. It also helps in determining different maintenance requirement based on change in its performance characteristics due to degradation. To facilitate continuous monitoring now multiple heat exchanger data can be saved in a file with unique title and can be reloaded as and when required. Manufacturers generally provide design specification data such as heat transfer Area, U-coefficient, effectiveness for a given capacity performance. However, these values tend to vary over a period of time and often it is necessary to evaluate and compare design specification data with actual performance. This app serves as a tool for different maintenance personnel, energy and application engineers in monitoring performance and energy efficiency in a shell and tube heat exchanger. Fluid Properties: Users can quickly select different fluids for both shell side and tube side application from a list of most common fluids used in industrial applications. The key property data such as density and heat capacity is evaluated based on given temperature and pressure for the given fluid. For fluids that are not in the list, users can create a custom fluid with known property data. Data can be edited in both SI and USCS unit standards. Heat Exchanger Data: One can choose heat exchanger depending upon type of application as well as flows. Both inside and out side tube heat transfer area can be computed using the tube dimensional data for verification purpose as shown in the following screen shot. Performance Summary The over all heat transfer coefficient is computed and presented in the main screen. The additional result gives different key performance characteristics of a heat exchanger. App notes has all the definition and brief descriptions of different key parameters presented in the summary. In addition, provided link for the documentation of implementation and validation of math-models used with guidelines for periodic maintenance activities.

Some things do not belong on a calendar. You just need to know when they last happened. Everwhen keeps the small, recurring facts out of your head. Replace an air filter. Water the plants. Call someone. Tap Done when it happens; the answer is waiting next time. One clear answer • See the last date and days since at a glance • Log now with one tap, with Undo right there • Record earlier today, yesterday, another exact date, or an approximate date • Search the full history when one detail matters Keep the useful context Add a note, place label, and up to six photos to a moment. Keep a reference photo or note with the item itself. Send selected photos to Everwhen from the share sheet. Your timeline stays useful without becoming a task list. Made for real life Use optional quiet reminders, Home Screen and Lock Screen widgets, Shortcuts, and Ask Everwhen. Pause a seasonal item without losing its history. Share exactly 1 to 30 chosen items through iCloud when family or household members need the same memory. Free, private, and calm Everything in Everwhen is free. There are no ads, subscriptions, Everwhen accounts, analytics, or tracking. Core use works offline, with iCloud available for private sync and chosen sharing. Everwhen is native on iPhone and iPad, accessible, and available in 22 languages at launch.