ᐅ Solar Thermal for Domestic Hot Water and Additional Heating Support?
Created on: 8 Jun 2017 15:50
S
ShawN46
Hello everyone,
in our new house (existing property), a natural gas condensing boiler system is installed in combination with a solar thermal system (both were installed about 1.5 years ago).
Now I am wondering if it would be worthwhile to upgrade the solar thermal system to provide heating support as well?
A heating technician friend of mine said that especially in combination with underfloor heating (which we plan to install, as until now we have only had conventional radiators), adding heating support through solar thermal makes sense (mainly because of the relatively low flow temperature, of course). Another heating technician, however, believes that a solar thermal system should only be designed for domestic hot water, and anything beyond that would be a waste of money...
Therefore, I would be interested in your opinions or even better, your experiences regarding solar thermal for domestic hot water only, or for domestic hot water plus heating support!
Current setup: natural gas condensing boiler 17 kW, solar thermal flat plate collectors with 9.36 m² (101 sq ft), 800-liter (210-gallon) combined stratified storage tank.
Thanks in advance!
Best regards
in our new house (existing property), a natural gas condensing boiler system is installed in combination with a solar thermal system (both were installed about 1.5 years ago).
Now I am wondering if it would be worthwhile to upgrade the solar thermal system to provide heating support as well?
A heating technician friend of mine said that especially in combination with underfloor heating (which we plan to install, as until now we have only had conventional radiators), adding heating support through solar thermal makes sense (mainly because of the relatively low flow temperature, of course). Another heating technician, however, believes that a solar thermal system should only be designed for domestic hot water, and anything beyond that would be a waste of money...
Therefore, I would be interested in your opinions or even better, your experiences regarding solar thermal for domestic hot water only, or for domestic hot water plus heating support!
Current setup: natural gas condensing boiler 17 kW, solar thermal flat plate collectors with 9.36 m² (101 sq ft), 800-liter (210-gallon) combined stratified storage tank.
Thanks in advance!
Best regards
Sure.
The design of the heating system depends, among other things, on the usable floor area. How large the house is, how good the insulation is, and how much capacity the new system has? Unknown.
An 800-liter (210-gallon) combined stratified storage tank becomes interesting.
The 9.36m² (101 sq ft) of its collectors (there should be four) is somewhat insufficient.
For 800 liters (210 gallons), five collectors would be better.
The design of the heating system depends, among other things, on the usable floor area. How large the house is, how good the insulation is, and how much capacity the new system has? Unknown.
An 800-liter (210-gallon) combined stratified storage tank becomes interesting.
The 9.36m² (101 sq ft) of its collectors (there should be four) is somewhat insufficient.
For 800 liters (210 gallons), five collectors would be better.
AOLNCM schrieb:
An 800-liter (210-gallon) combined stratified storage tank, it starts to get interesting.But only for the storage manufacturer, panel manufacturer, and the installer...
You could also save the space, money, and additional technology and just operate the heating system with it for several years...
Oh, the other extras aren’t that expensive. Standard ventilation system with tilt-and-turn windows and white handles on each unit is included at no extra cost, but it is manually operated. Outdoor fireplace as a garden fire pit including a grill, Landmann, 11.90 plus a few fieldstones. Two 12-volt 70 Ah batteries for emergency power supply for the cars, brand Varta, 109.90 each plus deposit...Karsten
Yes, you already have an understanding of how to build very cost-effectively.
But others are happy to spend money on luxury.
However, solar thermal systems rarely pay off when installed by a contractor.
To effectively support heating, the system needs to be designed for very low flow temperatures and a large collector area.
In the transitional seasons, you might save some energy that way.
Personally, I would much rather invest that money in better insulation instead.
Solar is only really necessary if you are building with a gas boiler and the primary energy demand is too high (if I remember correctly).
But others are happy to spend money on luxury.
However, solar thermal systems rarely pay off when installed by a contractor.
To effectively support heating, the system needs to be designed for very low flow temperatures and a large collector area.
In the transitional seasons, you might save some energy that way.
Personally, I would much rather invest that money in better insulation instead.
Solar is only really necessary if you are building with a gas boiler and the primary energy demand is too high (if I remember correctly).
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