LouiseSJPP
New Member
I still need some of the basics here, too many gaps in my knowledge and I don't know the terms I'm looking for.
I want to create a solar system to operate my (wood-fired) spa pool, an island system because I don't want the complications of a grid-tie.
In simple terms, when the panel power available is sufficient, the 50 watt filter circulation pump should come on. When the power available exceeds 1KW, an inline 1kW water heater should cut in. In the background, a battery bank should be kept on charge, this being used occasionally to run the 1kW spa jet pump. In addition, there will be a small LED lighting load, at any time, ie, from the battery reserve.
Location is northern Spain, sky view is reasonable, rather than excellent. Some parts of the array could be shaded.
If the system is sized such that even on poor day in winter, the circulation pump will get an hour or two running, how much excess power will this deliver on a blazing summer day?
What panel size, battery capacity and component kit list should I be looking for?
I know that direct solar water heating is more efficient than using PV, and I could do a mix of both, but the motor loads must be met. I don't want any grid connection near this island. I'm hoping to avoid using the wood stove in summer, fearing it might be a)smoky, and b) too much of a fire hazard in the dry season.
Edited to add: I've found this very useful website, set to my location: https://globalsolaratlas.info/detai...ite&c=42.510577,-3.131104,8&pv=small,180,36,1
I want to create a solar system to operate my (wood-fired) spa pool, an island system because I don't want the complications of a grid-tie.
In simple terms, when the panel power available is sufficient, the 50 watt filter circulation pump should come on. When the power available exceeds 1KW, an inline 1kW water heater should cut in. In the background, a battery bank should be kept on charge, this being used occasionally to run the 1kW spa jet pump. In addition, there will be a small LED lighting load, at any time, ie, from the battery reserve.
Location is northern Spain, sky view is reasonable, rather than excellent. Some parts of the array could be shaded.
If the system is sized such that even on poor day in winter, the circulation pump will get an hour or two running, how much excess power will this deliver on a blazing summer day?
What panel size, battery capacity and component kit list should I be looking for?
I know that direct solar water heating is more efficient than using PV, and I could do a mix of both, but the motor loads must be met. I don't want any grid connection near this island. I'm hoping to avoid using the wood stove in summer, fearing it might be a)smoky, and b) too much of a fire hazard in the dry season.
Edited to add: I've found this very useful website, set to my location: https://globalsolaratlas.info/detai...ite&c=42.510577,-3.131104,8&pv=small,180,36,1
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