SolarAttic PCS1, User Manual

Page: 111 / 116

Dictionary of Terms Page 3 of 4
transfer. An example would be an item physically sitting in a
hot attic getting hot just from being there.
C.O.P. Coefficient of Performance. A term used primarily with heat
pumps to rate their performance against that of an electric
resistance heater. C.O.P. is calculated by the formula:
C.O.P. = BTUS OUT
¸
BTUS IN
Efficiency Another term used with heat pumps to reflect how efficient heat
pumps are to an electric resistance heater. For example: a heat
pump with a C.O.P. of 4 would be called 400% efficient. Able to
deliver four times the energy out than the amount used.
Efficiency is calculated by the formula: Efficiency = C.O.P. x 100%.
Flowreversalª Valve
A valve used to reverse flow of water in a swimming pool so
that the pool will use heat efficiently. This means taking the
water off the top of the pool from the return lines and returning
the water into the main drain at the bottom of the pool.
Flowreversalª is a trademark of Innovative Pools & Spa.
Forced Air A heat transfer term referring to the use of an air moving device
such as a fan in conjunction with another device such as a water
coil.
Forced Air Convection
The use of forced air to accelerate the heat transfer that would
normally occur passively by "convection".
Gallons/Cu Ft Gallons per cubit foot. There are 7.5 gallons in the volume of
one cubit foot. Factor used in some pool heating calculations.
GPM Gallons per minute. The flow rate of water in the swimming
pool's support system. A factor used in BTU calculations.
Heat Exchanger A product that takes heat from one area and transfers it to
another area. The PCS1 transfers heat from the attic to the
swimming pool.
Heat Pump A method used to heat swimming pool's by using a reverse
refrigeration cycle. This method uses a compressor similar to
the one in your refrigerator. The product takes heat out of the
ambient air to heat swimming pools and is four times more
efficient than using an electric resistance heater.