Air Conditioner (AC) Unit Tonnage Calculator Online unit calculator to determine the air conditioner tonnage required for a particular room. The ac unit ton calculation is based on the number of windows, sunlight, heat producing appliances in the room like computer, light etc. Air Conditioner (AC) Unit Tonnage Calculation Code to add this calci to your website Air Conditioner (AC) Unit Tonnage Calculation is made easier here. Wind Chill Calculator Room Air Conditioner(AC) Calculator Rain Harvest Cloud Base Programme & Unit Catalogues Codes for processing course changes Choosing optional units on-line - information for undergraduate and full-time taught postgraduate students New undergraduate and full-time taught postgraduate students: New undergraduate and full-time taught postgraduate students will be able to select any optional units at the beginning of the academic year. For new students commencing their studies in 2016/17, the system for choosing units on-line will be available from 10.15am on Thursday 29 September 2016 to 5pm on Wednesday 5 October 2016 (note that the system will be unavailable between 08:00 and 10:15 each day).

Printable guide to online unit selection for new students Frequently asked questions regarding online unit selection (new students) If you have any queries regarding which optional units you should choose, please contact your Director of Studies/Director of Teaching. central ac units usedIf you have any problems with the on-line unit selection process, please use the 'Contact Support' links in SAMIS on the Web to request assistance.how residential ac units work Continuing undergraduates will be able to select optional units for the 2016/17 academic year on-line between the afternoon of Wednesday 13 April 2016 and 5pm on Wednesday 27 April 2016 (prior to the start of the Semester 2 exams).home central air conditioner not working

Updated printable guide to choosing optional units [pdf] (for continuing undergraduate students) Frequently asked questions regarding online unit selection (continuing students) Once on-line unit selection has closed you may only change your optional units in exceptional circumstances (see 'Changing and choosing options' (pdf) for further details). If you meet the criteria for changing your options you must submit a change of units form to your department by the Wednesday of the first week of the relevant semester. Any changes to optional units must be made on the basis of the published timetable. US/Canada/Mexico/CarribeanAustralia/SE Asia/JapanSouth AmericaEurope/Middle East/AfricaChina Welcome to the Hoffman cooling selection tool. Enter the requirements of your application. The software will suggest standard cooling solutions such as air conditioners, heat exchangers, and air movers. If you need a custom solution such as custom paint option, increased air flow, or unique dimensions, please contact your sales representative.

Select Units of Measurement Total Surface Area: Surface Area available for Heat Transfer: Enclosure Surfaces Not Allowing Heat Transfer Max temp outside the enclosure: Max desired temp inside the enclosure: Min anticipated temp outside the enclosure Min allowable temp inside the enclosure Heat Load Calculator Options Temperature Inside and Outside Enclosure Component Voltage and Amps Internal Heat Load in Watts Enter heat load here or use one of the heat load calculator options to the right for assistance. Enclosure Insulation R Value R0 = 0.0inR2 = 0.5inR4 = 1.0inR6 = 1.5inR8 = 2.0inR12 = 3.0in Closed Loop/Sealed SystemFresh Air/Vented System (Open Loop) Type 12/IP54Type 12/IP55Type 3R/IP55Type 4/IP55Type 4x/IP55Type 1/IP10UL Class 1 Div 2 115 volt AC 50/60 hz230 volt AC 50/60 hz460 volt 50/60 hz24 volt DC48 volt DCOther Industrial filter fanOutdoor direct air cooling (DACS)19" data rack fan tray/blowerBare/loose air mover

Type 12/IP54 filterIP55/Merv12/Z-filterDense/hydrophobic filterNo filter System Air Flow Impedance Heat ExchangerAir ConditionerVortex Cooler To help ensure proper model selection, please check the performance curves provided on the website to confirm that it provides the required cooling capacity for your application No exact matches found, please verify all settings. There is a possibility that multiple units may be required. Contact Customer Service at 1-800-896-2665 for more information. Estimate Heat Load using Temperature Internal heat load can be deteremined by measuring the difference in temperatrues between the inside and outside of the sealed enclosure with no fans running and all components operating at full power. It is imperative that no ambient air is allowed to pass through the inside of the enclosure. Temp outside enclosure 1 meter/yard from panel: Temp inside enclosure near top: Estimate Heat Load Using Voltage and Amps

Watts of heat load can be determined using the voltage, amps and efficiency of main components in the enclosure. If efficiency is unknown, enter 0%. Estimate Heat Load using Industrial Automation Components Watts of heat load can be determined from popular industrial automation components. enter below key components inside the cnclosure. Model assumes 97% efficiency for VFD and 95% efficiency for servo drive and transformer. Variable Frequency Drive (VFD) A Variable Frequency Drive (VFD) B Show All Tabs | Input Test Data | Ignore Features Filter Products |There are a lot of extension cords out there, and sometimes it's hard to know which one to use. Often, people just go to the same one for everything—and it's not always a safe choice for the wires carrying the current, the outlet, or the machine itself. Eliminate the guesswork by using the best cords for 16 common applications. Your house is the biggest gadget of all. A Gizmodo Home Mod shows you how to recharge it, clear its cache, and update its operating systems.

Note: The cords recommended here are the minimum thickness cords permitted for each application by the National Electric Code. Any appliance can use a shorter or thicker, lower-gauge cord. Dangerous situations arise when substituting a longer cord, or a thinner, higher-gauge cord, than the one recommended for these 16 jobs. For more general info on safe extension cord use, look at these fact sheets from the state of Texas and Florida State University.For blowers will 12 amps or less, use a 16-gauge light-duty cord within 50 feet of your outlet. Go with a 14-gauge medium-duty cord for a higher amp or a greater distance from the outlet. Make sure the cord is rated for outdoor use—look for a "W" on the jacket.2. Use an 18-gauge, two-prong, light-duty extension cord. It can handle up to 7 amps up to 25 feet—perfect for discreetly running to a nightstand from the outlet behind the bed. A retractable cord, like this one from TV Time Direct, cuts down on clutter.3. A 14-gauge, three-prong, medium-duty cord is a general-purpose tool ideal for powering small household appliances, like a laptop.

Treadmill manufacturers generally discourage the use of an extension cord with the product. But if you can't move your exercise equipment closer to the outlet, go with a cord made specifically for treadmills—like the 9-foot Treadcord.5. Heat-producing appliances like toasters, irons, and coffee pots draw at least 10-12 amps of current, which is beyond the limits of most indoor extension cords. Hopefully your kitchen layout permits the small, portable appliances to live near an outlet, far from the sink.You'll have to let your hair air dry if you can't plug in the hair dryer directly to an outlet. Hair dryers typically draw 15 amps, which can cause an extension cord to get hot enough to start a fire.7. Go with a 12-gauge heavy-duty outdoor cord, which will have you covered for up to 100 feet from the outlet. Get a cord with a lighted plug so you'll know when the power is on.You'll want a surge protector or power strip to protect your computer, printer and other electronic equipment from spikes above 120 volts.

Some surge protectors have metal oxide varistors, which are essentially semiconductors that stop the transient voltage. Strips like the Fellowes 6 Outlet Surge Protector are designed for small office electronics.Use a typical, off-the-shelf 16-gauge cord, or buy a specialty one, like the Vacuum Cleaner Cord from Prime Wire and Cable.10. A three-prong, 12-gauge cord works best. Get one with a locking plug since you'll be moving the vacuum around a lot and it can easily come unplugged.Go with a 16-gauge cord for 25 feet or less, or 14-gauge for more than 25 feet. Get the length you need—don't ever daisy-chain two extension cords together. Look for a "W" on the jacket to confirm that it can be used outdoors.You'll want a surge protector, like for your home office. When you're not watching TV, turn off the surge protector to stop vampire appliances from using electricity. Consider the Conserve Switch from Belkin, a surge protector with two outlets that remain live for devices that need continuous power, like a wireless router.13.