The Future Of The Energy Star

Aug 02

Repair a Solar Water Heating System

Getting a solar hot water heater system is an excellent way to save money without sacrificing the staple modern luxury of hot water. However, if your system breaks or springs a leak, you’re looking at the potential of lost money. There are ways to repair your heating system on your own, however, so you can get back to your warm showers and keep your cash in your wallet where it belongs. For problems besides leaks, consult with a professional for repairs.

Find the problem and source of the leaks. Most solar water heaters use a radiator pattern, which use many bends along the interior pipe. This bending can break over time.Turn off the main water source to the vacuum tube solar collectors. Drain the water completely from the system.Remove the solar water heater from its mounts and unhook the pipes on either side. Be aware that residual water will run out as pipes are removed and the water heater is moved.Open and remove the plastic cover, giving you access to the winding pipes inside. Use a towel to remove excess water; then set it out to air dry completely.

Find the damaged or leaking section of pipe. The inside pipes come in two types, either a copper pipe or a PVC pipe. Simple fixes for copper pipes would be adding a strong suitable sealant to the hole or leak. If the damage is more extensive to the copper solar thermal collectors, the section will need to be cut out and removed and a replacement section welded in place. For PVC piping, leaks tend to occur at their joints. The glue will corrode or fail over time. Remove the joint and reapply new glue. Attach the joint and allow to fully cure. Follow the directions on the glue for how long to wait.

Repaint all the areas you repaired or replaced black to match the rest of the piping. Touch up where the pipe paint has chipped or peeled over time. Close the lid of the water heater. Reinstall the solar water heater to the mounting location. Reattach the piping, closing the system. Turn back on the water and run the system for a full 24 hours to fully test the repairs.

Next post:Air Source Heat Pump

Air Source Heat Pump

Air Source Heat Pump

Categories: Air Heater Pump


Air Source heat pump hot water system (Air source water heater system) is made up of a water storage tank and a heat pump. The heat pump is either mounted on top of, or adjacent to, the water storage tank. The heat pump consists of a condenser located around the outside of the water storage tank, a compressor and an evaporator.
Work Principle: Like an air conditioner in reverse cycle, the heat pump works by absorbing
heat from the air into the refrigerant gas within the evaporator. The compressor increases
the pressure and temperature of the gas, and sends it through the condenser which is located
in the water tank casing. Here heat energy is transferred to the water, the gas cools and then
flows back to the evaporator in a continuous cycle.
Heat pumps do not require direct sunlight, and therefore produce hot water using the same
method rain, hail or shine. A heat pump can produce ample hot water for any household
situation and has the added advantage of using approximately one-third of the electricity of an
electric storage hot water system.
Air source water heater is usually used in the places of family house, bathing spot and hotel.

Click here ,you can know more imformation about Haining Joyon Solar Water Heater Co., Ltd.

Vacuum Tube Solar Panel Performance

The overall performance of solar system vacuum tubes depends on several factors. This type of collector has better insulation than other collectors, allowing better performance during cold months of the year. Performance alone, however, should not be the sole determinant in choosing the right solar collector for your home.

Vacuum tube solar evacuated tubes are used in solar water heating applications. They also are called evacuated tube collectors. This type of solar panel features transparent glass tubes filled with water or liquid that absorbs radiant heat from the sun. According to the U.S. Department of Energy, vacuum tubes cost twice as much as their counterpart, flat-plate collectors.

An article in “Homepower” magazine states that vacuum tube solar panels reach an efficiency range of about 80 percent. Vacuum tube solar panels have a double layer of glass and a looping circuit, which result in a lower efficiency rating than conventional flat-plate collectors.

Solar system vacuum tubes can achieve extremely high temperatures of 170 to 350 degrees F, making them more appropriate for cooling applications on the industrial and commercial scale. This is primarily due to the vacuum tube’s superior insulation and heat retention technology.

Sources of Information:The Future Of The Energy Star Blog

Copper Coil Solar Water Heater

Name:Copper Coil Solar Water Heater

Copper Coil Solar Water Heater
1.certificate:CE,ROHS,CCC ISO9001:2000 
2.JISHEN Solar & OEM 
4.15years for system

1) Reliable and efficient twin-glass solar tubes; 
2) Copper heat pipes for rapid heat transfer; 
3) Easy plug-in installation; 
4) Free maintenance; 
5) Suitable for mains pressure water (up to 1.0 bar); 
6) Corrosion resistant silver brazed copper header; 
7) Aluminum frame; 
8) Powder coated (black, brown or silver) aluminum casing; 
9) Stable solar conversion during the day; 
10) The perfect solar collector for domestic solar water heater systems; 
11) Ideal for commercial solar water heating applications.

Work Principle:
1) The operation of the solar collector is very simple. 
2) Solar absorption: solar radiation is absorbed by the solar tubes and converted into heat. 
3) Solar heat transfer: heat pipes conduct the heat from within the solar tube up to the header pipe 
4) Solar energy storage: water is circulated through the header, via intermittent pump cycling.Each time the water circulates through the header, the temperatures is raised by 5-10C. Throughout the day, the water in the tank is gradually heated.

The source of solar product:Zhejiang Wakin Solar Technology Co.,Ltd.,The company also have Folding Solar Water Heater,Solar Hot Water Heater and so on.Believe that you won’t miss it.

Solar water heating system

Solar water heating system

Categories:Solar hot water - High Pressurized Solar hot water heater


2,high quality with best price 
3,beautifull design 
4,15years warranty

1). Highly efficient absorber of high performance with daily average efficiency over 50%; 
2). Start up quickly, heat pipe transfer the heat energy into the storage tank in one direction. 
3). Withstand pressure of 6 Bar, can be connected directly with city water. 
4). No water inside the evacuated tubes; The solar water heater can still in service even with several tubes breakage; 
5). Highly efficient insulation with polyurethane foam; 
6). Simple structure, easy to assembly and install, diffuse flat plate reflector can be assembled easily with its module structure; 
7). Can be used all year round in the cold climate; 
8). Can be used together with Auxiliary electric boost; 
9). Long service life, can be used as long as 15 years.

1). Material of storage tank 
2). Outer tank: Colorful steel, 0.4mm thick 
3). Inner Tank: SUS304-2B stainless steel 1.5 mm 
4). Thick Insulation: Polyurethane foam, 50 mm 
5). Working pressure: 6Bar 
6). Daily efficiency: ≥ 55% (≥ 42% in winter) 
7). Working temperature: 60 Degree Celsius -35 Degree Celsius 
8). Vacuum tube specifications: 58mm*1800mm 
9). Lifetime: 15 years

To know more imformation aboutHome Solar Hot Water Heating.

Apr 28

Home Solar Hot Water Heating

Electric and Gas solar hot water systems account for about 20% of the household greenhouse gas emissions. Solar hot water systems are fairly simple in design which contributes to their durability. An installed solar hot water system could save you up to 75% of your hot water heating costs.

Typically a single 300 litre system will adequately service a home of between 4 to 8 people comfortably. All systems usually come with a booster system either gas or electric in order to ensure warm water 24 hours a day no matter the weather.

Traditionally flat plate collectors have been the most popular but the recent introduction of evacuated tubes with their better durability and efficiency has seen them jump in popularity.

Home Solar water systems can either be roof mounted or split systems.

In roof mounted systems the solar panels are combined with a tank and located on the roof structure. A sloping roof facing south in the northern hemisphere or the opposite if in the southern hemisphere. The sun heats the water and the hot water rises in the tank and siphons into a pump or gravity feed which makes it available to the house. Split systems consist of a north (or south) facing roof mounted collector(s) with a separate tank on the ground, usually located close to one of the major warm water consumption areas, such as the kitchen or bathroom.

The sun heats the water in the collector and once it reaches a desired temperature, a sensor device activates the circulation pump which starts to pump the water into the storage tank on the ground. This pump will also usually pump the cold water from the bottom of the storage tank up into the collector The 2 systems are pretty similar in their efficiency and the choice is most likely to be made on what fits the house structure best or cosmetically is preferable.

Solar Water Heating at Facebook

The SunWater Solar crew has been hard at work this week launching construction of the Cogenra solar thermal/PV system we are installing on the fitness center at Facebook’s new campus in Menlo Park, Calif. This week SunWater Solar cut into the roof, lifted materials to the roof and began building out the blocking and sleepers that will support the solar system rack. Once the rack is complete, we’ll mount the Cogenra solar collector arms, collectors and mirrors, and begin connecting to the building’s existing water-heating and electrical systems.

Another exciting development at Facebook this week was the arrival onsite of the 760-gallon Trendsetter solar storage tank that will act as the “battery” for the solar water-heating system. This unpressurized, rectangular aluminum tank will reside in the ground-level mechanical room.

For solar thermal integrators, the start of any new commercial project is always exciting. All the preliminary work is complete, and the project has moved from the drawing board to the hands-on, boots-on-the-roof world of tools, materials and building. Furthermore, when companies of Facebook’s caliber adapt solar cogeneration technology, it helps prove the value of these systems to other organizations.

Solar Water-Heating at U.S. Army Camp Parks

Camp Parks, a U.S. Army reservist base in Dublin, California, is charging ahead with solar water heater and other renewable technologies these days. The base’s efforts to implement solar thermal technology are indicative of a powerful drive within the U.S. military to achieve energy independence. Within the U.S. military, several mandates are in place that set ambitious goals for the use of renewable energy technologies.

Camp Parks’ work with solar was recently highlighted in a Mercury News article that includes a few images of the solar water-heating system solar vacuum tube installed at the base. This 562 square-foot Heliodyne system includes 924 gallons of solar storage (vertical Hanson tanks) and heats water for soldiers’ barracks. SunWater Solar is currently working on several much larger solar water-heating systems at another U.S. military base.

As with many other technologies that are now accepted and commonplace, solar thermal is being widely implemented by the military before widespread acceptance by the private sector. In its efforts to cut costs and reduce dependence on fossil fuels, the U.S. military is currently experimenting with a wide variety of renewable technologies, including solar water heating. We are confident that the solar water-heating will stand out as one of the most robust, cost-effective ways for the military to meet its renewable energy use goals.

Apr 17

Solar Power Generation Process

Solar power generation is primarily produced through the use of photovoltaic technology. In this process, photons, or particles of light, are absorbed by collectors and the energy released during this absorption is transferred as electrical current.

Photovoltaic Cells To generate solar power, photovoltaic cells, or solar cells, need to be exposed to sunlight. These cells are thin semiconductors, such as silicon, that are given a positive and negative charge.

Generating Electricity

When sunlight hits the cell, it displaces electrons from the semiconductor. The positive and negative charge allow for the electrons to be controlled and directed through a cable. Arrays In order to produce useful amounts of electricity, many solar cells are linked. Cells are mounted on a panel to make up a module, which are in turn organized into arrays. A commercial solar module can produce over 200 watts of electricity when operating at maximum capacity.


After the electricity is created by the solar cells, it passes through an electrical inverter, which changes the electricity from direct current to alternating current. Alternating current, or AC, electricity is used in standard American power outlets.


Once solar energy is converted into a usable form, it needs to be distributed or stored. Major solar plants transfer their electricity through cables directly into the national grid, which distributes it to residences and businesses.

Solar Power Generation Plants

Long lines of mirrored solar cells can be seen stretching across large areas of land in America, Germany, Japan and many other countries worldwide. These solar cells are used to generate energy through solar power plants. Solar power is a form of alternative energy that uses the sun’s power to create usable electricity. Solar power plants use various methods to capture the sun’s energy and have a long history. Today solar energy is used to power residential and commercial areas around the world.


Passive solar power has been recorded as early as 700 BC. Passive solar power involves the direct heating of homes by the sun. Photovoltaic cells, which are used to convert solar energy directly into electricity, were developed by Charles Fritts in 1883 and were made of selenium. In 1954 the first modern photovoltaic cells made of silicon were created by Bell Laboratories. These cells greatly increased solar power efficiency. It was not until 1965 that Peter Glaser developed the idea for the first solar power generation plant, and in 1982 the first megawatt solar power plant went online in Hisperia, California. By 1999 worldwide photovoltaic cell output reached 1,000 megawatts.


As of 2011 there are two main types of solar power plants. Photovoltaic plants use parabolic troughs lined with photovoltaic cells to create power immediately. Thermal solar power plants use parabolic troughs lined with mirrored panels. These panels focus the sun’s energy onto a receiver rod. Flowing through the receiver rod is oil called therminol. The energy focused on the rod heats up the oil to about 400 degrees Celsius, or 750 degrees Fahrenheit. In thermal power plants the heated therminol is transferred to the heat exchanger through a series of pipelines. The heat exchanger uses the oil to heat water and produce steam. The steam is then pressurized and used to propel the solar collectors generator’s turbine. This generator sends power to a transformer, which converts the energy into a usable form and transports it to residential areas. After the steam is used to power the turbine in a thermal power plant it is sent to a cooling tower. Here the steam cools and condenses back into water. When it is sufficiently cool it is recycled into the heat exchanger and converted back into steam.

In photovoltaic plants the process is less complicated. Energy from the cells is sent directly to the plant’s generator and then to the transformer. There is no need for steam power in these plants.


Solar power is one energy resource labeled as an “alternative energy,” meaning that is does not depend on fossil fuels to create power. Solar collector is preferable to fossil fuels because it is free, available in all countries and produces no greenhouse gas emissions. In addition, sunlight cannot be taxed or the importation of sunlight limited, such as is the case with fossil fuels. Developing nations or nations with fuel embargoes could greatly benefit from this technology. Yet, fossil fuels already have an intact infrastructure to create massive amounts of energy for large urban centers. Converting this infrastructure to solar power would have a very high price. When solar power is compared to other forms of alternative energy it also has some advantages. As with fossil fuels, not all alternative energy sources are as readily available as solar power. Some nations do not have the resources for wind, water or geothermal power, but solar power is universal. When compared to bio fuels, solar power benefits from its lack of high production cost.


Solar power does have some drawbacks. Solar power plants do not have high energy output in all regions. Areas ripe for solar power are usually sunny, desert regions with long days. Areas farther north with high cloud cover and short winter days can use solar energy, but will not produce as much energy as southern regions. Solar plants also have a high initial cost to build and require large amounts of land to erect solar collection troughs.

Additionally, some supplementary power plant heating systems use fossil fuels to produce energy on cloudy, low sun days. Pollutants from fossil fuels are then released into the air, eliminating the label of “clean energy” from these plants. However, most plants do not have fossil-fuel-powered back-up systems, but instead store a portion of their daily energy output to use on low-sunlight days.