pool-heat-pump-vs-polymer-solar-payback-calculator

		Pool's Water Surface Area (m²):
		Estimate your pool's water surface area
		Pool length: (m)		Pool volume: (l)

		Average width: (m)		Average depth: (m)

		Pool's surface area:
				<<< Adjust if different

		Specific Local Effects on Water Temperature
		Select your city:

		Your local wind strength:

		Your pool's wind sheltering structures:

		Shading on pool (between 10am-4pm):*

		The colour of your pool walls and floor:

		Bubble cover usage (transparent):


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		Specify Poly Solar System Modifiers
		Roof pitch (or mounted collector pitch):

		Compass direction of mounted collectors:

		Roof type and colour:

		Manual or automatic system:‡

		Depth of solar suction ports:

		Pump height for solar system:

		Size of collector area to simulate:

		Note, this will be the size of you PV system also
		Type of collector:

		Select custom solar coverage (scale by):


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		Pool Temperatures Chart (°C) vs Months of Year






















		Total Swimming Season Length (Months)
		Unheated Pool			Your Pool's Season
		Heating Extension			Total Solar Season

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		Energy Prices & Custom Adjustments

		Your estimated peak tariff:
		Or specify custom peak tariff:
		State estimated feed-in tariff:
		Or use custom feed-in tariff:

		Interest rates:

		10 Year Degradation Factors
		Heat Pump COP Loss§
		Inverter Efficiency Loss
		Solar PV Efficiency Loss
		Poly Solar Efficiency Loss

		Poly Solar Heating System
		Supply costs (per sqm)
		Total solar poly supply costs
		Installation cost (per sqm)
		Total installation costs
		Servicing costs (2 yearly)
		Pump replace (5 yearly)

		© Copyright 2024 Optex Solar Pty Ltd.

		Energy Prices & Custom Adjustments
		PV System Details
		Overall % exported to grind
		Overall % used at home
		Note, change % export if battery storage
		and PV system size and usage patterns
		PV Panel efficiency
		AC to DC Derate
		Overall PV System efficiency
		Reduce PV system due to budget?

		PV System size
		PV kW
		Supply costs (per sqm)
		Total solar PV supply costs
		Installation cost (per sqm)
		Total installation costs
		Heat Pump Supply cost
		Heat Pump Install cost
		System servicing (2 yearly)
		Inverter replace (10 yearly)

		Storage Battery System
		Include a storage battery
		Battery supply and install cost

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		Benefit of a Heat Pump with PV over Poly Solar
									.





















		Final Analysis and Results:




		© Copyright 2024 Optex Solar Pty Ltd.


Month	Ta	Ts	Tw
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec


Month	V10	Qh	Qi	Pa
(Units)	m/s	MJ/m²d	MJ/m²d	kPa
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

© Copyright 2024 Optex Solar Pty Ltd.

Data Used for Heat Pump Calculations
Month	Ave_Temp	Td-Tw	R_Humidity
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Average Daily kWh Thermals Required
(to maintain temperature shown on chart)
Month	Solar	Heat Pump	Gas
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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Average Daily PV System kWh
Month	Produced	Excess / Deficit
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Average Financial Earnings
(after heating your pool)
Month	Daily	Monthly
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

© Copyright 2024 Optex Solar Pty Ltd.

Adjust Solar Pump Power¥
Balance flow to see effects on
pump power & collector efficiency

Solar mains pump required:


Heat removale factor
Resultant new solar COP:
Notes on Solar Efficiency:
1) Running a small solar pump has a large effect
on the payback equation shown on the next page.
2) High flow collector types are more
electrically efficient than others.

Heat Pump COP Efficiency
What heat pump efficiency† to use:


Finer Heat Pump COP Adjustments
Heat pump AHRI† COP specs used:
HAHH:	HAMH:	LAMH:

Use custom heat pump AHRI† specs:


© Copyright 2024 Optex Solar Pty Ltd.