| Solar
water heating systems model. |
|
a.
|
Naturally recycling systems. |
|
|
|
b.
|
Reinforcing heating systems. |
|
|
| Naturally
recycling systems |
Principle
The working liquid (water) in absorber, which absorb the radiation heat from
sunshine. The heat will decrease the density of water. The density will be drop
down and become lighter. Hence the hot water will be floated up and flowed into
the top of the tank. At the same time, the cool water in the tank will be pressed
and vacuumed into the bottom of absorber of solar panel. By this naturally cycling
way , it increases the temperature of water in the tank. |
| Reinforcing
heating systems |
| Using the
temperature sensor and elec pump to press the water through the absorber. The
water will collect the heat to be sent back to the tank for storage. By this
way, the temperature of water will be risen up fast. |
| The
Cost comparison between Solar heating system with other Heating. (Cost is basic
on Taiwan current rate.) |
| Comparison between different
Hot water heating equipment for 80 Persons |
| System |
Elec.Heater |
Gas Heater |
Diesel Boiler |
Solar heater |
| 1.Cost |
US$5,400.00 |
US$6,700.00 |
US$10,000.00 |
US$13,300.00 |
| 2.Life |
5~7Years |
4~5Years |
5~7Years |
Up 10 Years |
| 3.Fuel consumption |
Electrical |
Butane/Natural gas |
Diesel |
None |
| 4.Fuel efficiency |
0.9 |
0.6 |
0.7 |
0.6 |
| 5.Fuel cost Annual |
US$6,700.00 |
US$5,400.00 |
US$2,000.00 |
US$870.00 |
|
|
| Comparison of performance features
: |
|
|
|
Elec. Heater
|
|
Easy
|
|
Short Circuit
|
|
When used old
|
|
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Gas Heater
|
|
Easy
|
|
Gas leak out & Poison
|
|
Risk of blow up
|
|
|
Diesel Boiler
|
|
Easy
|
|
Risk of blow-up
|
|
|
|
|
Solar heater
|
|
Automatically
|
|
Safe and no Worry
|
|
|
|
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| Total Evaluation |
1/ Electrical water heating systems
|
a.
|
Electrical cost is most expensive
fuel for heating water. |
|
b.
|
It need to pay monthly. It will
cost higher and some time shortage problem. |
|
c.
|
If no electrical, this system is
unavailable. |
2/ Bultane water heating system
|
a.
|
Need to pay fuel cost. |
|
b.
|
Worry the price up and shortage
probem. |
|
c.
|
When gas tank can not catch supply,
then system is unworkable. |
|
d.
|
Installation must be considered
the unconvenience of gas tank supply and changing. |
3/ Natural gas water heating system
|
a.
|
Need to pay the fuel cost. |
|
b.
|
Worry the price up and shortage
problem. |
|
c.
|
Moust spend the cost for the piping
natural gas. |
|
d.
|
If there is not gas piping then
this system is unworkable. |
4/ Diesel
Boileer heats water supply systems
|
a.
|
The equipment is very expensive. |
|
b.
|
Need to pay high fuel expense. |
|
c.
|
Worry for the fuel price up and
shortage problem. |
|
d.
|
This system will cause big pollution
problem. |
5/ Solar water heating system
|
a.
|
No worry for the fuel cost up and
shortage, |
|
b.
|
Annual only spent a few of cost
and auxiliary heating fuel in winter tme. |
|
c.
|
First installation cost is higher.
But the long run cost is lower a lots. |
|
d.
|
Solar panels, if install on roof,
can get as anti-heating effect. |
|
e.
|
It is the cleans and good viewing
heating system than other. |
|
f..
|
This system needs space for installation. |
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