The SunTrunk's primary function is for day-to-day use when sunlight is available. The panels and batteries are sized to collect and hold about one full day of solar input, and then make that energy available during the day into the night.
These systems are not designed to power loads over long periods without solar input, or to power continuous 24/7 loads unless the loads are quite small. Solar design for these types of loads requires significantly more battery storage to adequately supply power over many days without sunlight.
SunReady Power systems can be used for camping, and working in remote areas.
SunReady Power systems can be used anywhere there is no grid power, or where power has been temporarily disrupted due to natural disasters. In these cases a small amount of electrical power can make a big difference in supplying critical needs for emergency communications, basic lighting, water pumping and purification, ventilation, and refrigeration.
Most people rely on batteries to provide these basic functions for a short time. However, when the need for power exceeds more than a day or two, the battery supply may run out. Small fuel powered electrical generators can then be used for power, but their usefulness over an extended time frame depends on having a significant supply of fuel on hand. In remote locations, or disaster situations – replenishing your fuel supply may be impossible.
What are the Options?
Batteries Generators Solar
Here is a short applications video – please watch !!
Cell phones, smart phones, satellite phones, PDAs, Ipads, Tablets, Kindles, and GPS devices really need very small amounts of power to recharge. By using the onboard storage in the SunTrunk, many of these devices can have their batteries recharged over night. These devices typically accept power from 5 Vdc USB outlets, 12 Vdc outlets, or 120Vac plug-in chargers. The SunTrunks provide all three sources for charging. The SunTrunks battery can be charged all day with solar, and then recharge phones or other devices at night. SunTrunks can also charge batteries for amateur radio stations, or batteries for military and industrial radios.
Computers And Office Equipment
A desktop computer, flat screen monitor, and printer can easily be powered by the appropriately sized SunTrunk. Auxiliary loads like copiers, modems, or add on speakers can also be powered. Laptop computers can be powered while in use, or have their batteries recharged when not in use.
Radios, stereos, televisions, game systems, sound
amplifiers,and public address systems can all be
powered with SunTrunks.
SunTrunks are very useful in providing indoor, or nighttime lighting. The on board battery storage allows energy collected during the day to be used at night. When using solar energy to provide lighting, it is important to use the most efficient lighting products available. Compact fluorescent lights (CFL), or light emitting diode (LED) lights are the most efficient. They put out about 4 times the light as a standard incandescent bulb for the same amount of electrical input. Nighttime lighting can be used for working at night, or for security purposes. With the appropriate battery charger, SunTrunks can recharge many rechargeable flashlight batteries, and lantern batteries.
Providing water in a disaster situation can be a high priority. Just moving water from a natural source or a storage tank can be easily done with small pumps and hoses. Purifying water can be done with ultraviolet light systems, or filters. The SunTrunks can be used to power water purifiers, or pump water through filter systems. Small pumps can be used to supply water to a field kitchen, sinks, or showers.
Many kitchen appliances can be powered with SunTrunks. Motor-driven appliances like mixers and blenders can be run for many hours. Appliances that are required to create heat consume a lot of electrical power, and may have limited usefulness. Toasters, coffee makers, small fry pans, and microwave ovens can be powered for short time intervals to produce one or two meals. A major kitchen operation producing dozens of meals would probably require fuel fired burners, fuel fired generators, or multiple SunTrunks.
Small energy efficient refrigerators have watt ratings that range from 35 watts to 115 watts. However, most refrigerators operate with a duty cycle around 20%. In other words, the motor is only on for 20% of the time, or around 12 minutes every hour. Therefore, a 35 watt refrigerator consumes about 168 Watt hours per day – while a 115 watt refrigerator consumes about 648 Watt hours per day. Using the SunTrunk 135, a day of sunlight will be able to power the 35 watt refrigerator for about 4 days. Larger refrigerators with higher watt ratings can be run on SunTrunks, but the solar input and battery storage may not be able to supply cooling for a full 24 hours.
Microwave ovens will typically have a rating based on cooking power, which is less than what they actually use. For example, a small microwave oven that has a rating of 600 watts cooking power, will actually consume about 1000 watts when set on high power. The larger SunTrunks can power microwaves with 600 to 900 watts cooking power. Microwave ovens are only utilized for a matter of minutes for each heating job, so many drinks or meals can be heated with the larger SunTrunks onboard battery.
Electric And Rechargeable Power Tools
For construction or clean up – power drills, power saws, jig saws, air compressors, paint sprayers, routers, grinders, weed cutters, and leaf blowers can all be powered with Suntrunks. These tools come in many sizes and power ratings. Also, power tool motors require a very short time surge current when they are started. All inverters can provide a surge power up to twice the continuous power rating for starting these motors. All power tools have rating labels with the required amps rating. The rated amps times 120 volts will give you the watts rating for the tool. Be sure the inverter chosen can supply this wattage. The SunTrunk 90 will power tools with up to 5 amp rating, and the SunTrunk 135 will power tools up to 8 amps.
Many hand held power tools today have rechargeable battery packs. These tools come with a 120 Vac charging station, and extra batteries. Now the tool can be in use while additional batteries are being charged by the Suntrunk.
In hot climates, ventilation air can provide significant relief to workers. SunTrunk 135 can power fans up to ½ horsepower to ventilate large areas. SunTrunks can also power small air compressors for filling up car tires, or air mattresses.
Selecting A System
The solar option is viable in most geographical areas, and most of the time. The sun does rise every day, but weather conditions may limit their usefulness. In general, winter time use of solar energy can be less than satisfactory. Probably the best overall solution is to have a small generator, and fuel supply – in addition to the solar system. Now solar can supply most of the energy needed, but in bad weather the generator can be used. This combination reduces the amount of fuel needed, and operating wear on the generator.
Before selecting a SunTrunk system, careful thought should be given to the types of equipment you will be powering, and the time you will be using each. Then an estimate of the daily power needs can be determined.
For larger loads powered by a 120 Vac inverter, the two most important factors are; Inverter wattage rating, and the battery watt hour capacity. The inverter rating of continuous load watts determines the size of the load in watts that the inverter will power. The battery watt hour capacity determines how long the battery can supply the load.
Here are estimated run times for various loads.