â02-09-2013 01:01 PM. There is no fee to refund. Sellers who accept Paypal incur a 30 cent fee plus a fee of 2.9% of the transaction amount. When a payment is refunded, that 2.9% transaction fee is refunded but seller does not get the 30 cents back. Ebay sellers also pay insertion fees and final value fees.ellers who accept Paypal incur a 30 cent fee plus a fee of 2.9% of the transaction amount. When a payment is refunded, that 2.9% transaction fee is refunded but seller does not get the 30 cents back.
Heat exchanger. Typically, solar panels work by transferring heat from the collector to the tank through a separate circuit and a heat exchanger. Heat collected by the panel heats up water (or oil or another fluid) that flows through a circuit of pipes into a copper coil inside your hot-water tank.
The panels are 250 watt Canadian solar panels. They are wired in groups of three, then paralleled into the system. To give you a sense of scale, these panels are 3.3 wide and about 4 feet tall. Now I know many people want to know why I didnât mount these on my roof or could they mount them.