There are so many solar water heater device for home and project use. To choose the right system become a import thing for comsumers to save time and cost.We are professional company have been doing solar water heater business for more than 20years. We offer different kindly of solar water heater and offer the right solar soultion . If you need any commercial or domestic solar hot water or heating water supply, please just feel free to contact me.We are always pleased to offer our best solution for you
Questions for solar solution
A good solar solution makes your solar work easy, Vod solar team offers a reasonable solar solution and solar products to meet your different needs. We focus on solar solution and installation for more than 15years. We help customers save time to design, install and energy saving.
Before doing solar solution, you should know some conditions:
1.Where will be the hot water apply to?
Resident use, commercial use?
If for resident use, how many persons would be?
For example, you can say 3peolpe, we will suggest you 120liter solar water heater.
And for commercial use, the capacity would be much more than 1000Liters.
Different usage purpose would request different capacity and hot water temperature.
2.Which area will be the solar water heater installed?
Here "Area" has two meanings. One is your country location, another one is detail installation place included top roof, ground, what's the area size and so on.
It is very import information for us to check the sun insolation, latitude and area size.
It helps us to decide tube numbers, collector size, collector angel and so on.
3.What's the existing conditions and equipment?
When we talk about existing conditions and equipment, I mean the all existing things that may relative to our solar system.
Supplier power: single or three phases, voltage, HZ
Supplier water: from government pipeline, from ground water by pump, other pressure water supplier
Pipeline: pipeline material and size exist
Equipment: It refers to any existing tank ,heating equipment, pump, heat exchanger ;More detail such like tank as existing pressure or non-pressure tank ,capacity ,drawing of tank ;heating equipment such as existing electric heater boiler ,oil boiler, electric boiler, gas boiler ,heat pump and other heating energy .More detail you have for exiting equipment would help us to check out the best solution.
4.What's your budged and expecting?
Your budged and expecting will decide which type solar water heater or solar collector you needed. You may think pressurized system is too expansive exceed your budged, ok, then we choose non-pressurized system. And then you find another problem, my suggest type solar water heater system still higher than your expecting, let's figure out a much economic way of non-pressure solar system for you. When all available system are exceed your expecting coastline, then how about cut off the design with all solar for energy saving, we may design half solar ,half other heating energy. Finally, we will give a very good solution for our customers.
5.Finally, people may ask how many systems you have and which system is suitable for us? Beside above mention questions for design use. We would like to give a rough idea of our solar hot water system.
Open loop resident solar hot water system
Simple to description this system: non-pressure, economic, simple installation, home use. If you find all above descriptions fall into your demand, you find the right system. It is a simple system for resident use. More details, please check following goods:
Compact Non-pressurized solar water heater
pre-heated solar water heater
Non-pressurized solar collector
flat panel solar collector
This resident system also can be used for central heating purpose.It is usually applied to small capacity central hot water system.
- Compact non-pressurized solar water heater or coil solar water heater can be installed in series to enlarge the water capacity. Such as 200L ,in order to reach 600L ,we can connect them in one series for working.
- Solar collector can be split combined with non-pressurized water tank for working. For small capacity system, we do not do active circulation system. We design the tank above the solar collector. It leads the system to work in nature solar circulation. Easy and simple for working.
Close loop resident solar hot water system
It is pressurized solar system, we need to focus on "pressure" ,that means all water comes out are with pressure. It makes sure for a more comfortable shower compare the non-pressure system. And compare to open loop, it has much higher heating efficiency. It is very suitable for cold area. This solar hot water system relative products as below:
compact pressurized solar water heater
Split pressurized solar water heater
Pre-heated solar water heater
Pressurized solar collector
flat panel solar collector
This system device to main two type central heating way.
- Compact pressurized solar hot water system : we can connect several single compact pressurized solar water heater to be one system for suppling hot water .
- Split pressurized solar hot water system: It is composed by pressurized tank, solar collector and workstation or control system .
Solar collector numbers and size are decided by the tank capacity.
Open loop commercial solar hot water system
Open loop commercial solar hot water system is a solar system which demand the system in open loop (non-pressurized) situation. Most important thing is that when working in installation, make sure to leave air vent and no block on it.
For commercial use solar heating system, the system capacity usually more than 1-ton hot water, we can consider to use "compact type solar water heater "series in connect for working. But mostly we adopt the central heating system, we adopt a lot of solar collectors, and tank are split design, not complete with collector as compact unite.
We usually adopt following equipment :
solar collector (including non-pressurized or pressurized)
Non-pressurized solar water heater (project use)
Controller (commercial use type)
Most popular application for open loop solar system, we choose non-pressurized solar collector which advantage in economic.
This economic solar collector hot water system is composed by solar collector ,pipeline,circulation pump,controller system. It is active circulation system ,it has multi-functional control system. It is more and more popular in the market.
Its main feature:
- Takes less installation area
- Easy for achieve the multi-function control
- Saving the cost
System process as below
- Controller system display tank water and collector temperature
- Automatic filling water by ball valve assistant tank or by controller through water level sensor and magnetic valve.
- Temperature difference control .Setting the tank and collector temperature difference as ΔT, when temperature more than ΔT,the circulation works to push the collector hot water to exchange the tank water .While the temperature drop down under ΔT, the circulation pump stops. This way will routine until sun down.
- Pipeline circulation: In order to supply hot water immediately ,when pipeline temperature lower then setting valve, circulation pump works to exchange the hot water from tank to pipeline.
- Heating Equipment controller: there will be backup heating equipment, when there is no sun energy or lower solar energy , the heating equipment works to heating the water tank unitil reaching the setting temperature.
- Anti-frozen circulation: Purpose to protect the collector pipeline.When extrem cold , circulation will circulate the hot water from tank to collector for protection purpose.
It is common used for hospital ,school, factory ,spa and other commercial usage. Now in China a lot of project is applied for saving energy and usually this system is combined with air source heat pump for steady hot water supply.
Close loop commercial solar hot water system
Close loop commercial solar hot water system is working under pressurized situation. The installation will be much easier than non-pressurized. We need pay may attention in pressure balance ( expansion tank needed), safety equipment( safety valve, pressure gauge and so on) and system heating without block(air vent needed).
The system usually complete following device:
Pressurized tank
Pressurized solar collector: flat panel solar collector and vacuum type solar collector
Controller system (pressurized use type)
This closed loop solar collector hot water system is composed by pressurized solar collector ,pipeline,circulation pump,controller system. Tank usually design with coil heat exchange for heat exchange, if the tank without insider heat exchanger, the system will install heat exchange outside tank for heat exchange purpose.
And heat exchange media will be always anti-frozen fluid.
Its main feature:
- Takes less installation area
- Easy for achieve the multi-function control
- Easy installation and high effeciency
System process as below
- Controller system display tank water and collector temperature
- The water supply directly from water source.
- Temperature difference control .Setting the tank and collector temperature difference as ΔT, when temperature more than ΔT,the circulation works to push the collector hot water to exchange the tank water .While the temperature drop down under ΔT, the circulation pump stops. This way will routine until sun down.
- Pipeline circulation: In order to supply hot water immediately ,when pipeline temperature lower then setting valve, circulation pump works to exchange the hot water from tank to pipeline.
- Heating Equipment controller: there will be backup heating equipment, when there is no sun energy or lower solar energy, the heating equipment works to heating the water tank until reaching the setting temperature.
- Anti-frozen circulation: Purpose to protect the collector pipeline. When extreme cold, circulation will circulate the hot water from tank to collector for protection purpose.
As we all know solar energy is not steady, there should be other backup heating energy for helping. It is not common used in China with air source heat pump which also a kind of energy saving energy with COP around 5.
Solar Solution of producing solar water heater or DIY Solar system
Finally, if you want the solution for manufacture solar water heater or DIY job, you can concern our solar producing machine and solar parts (including all raw material you may needed for producing). Or Tell me your plan for assemble a solution.
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