Passive solar water heater

Passive solar water heater

A water heating system that does not require mechanical pumps or controls to create hot water for domestic use.
References in periodicals archive ?
For the do-it-yourselfer seeking an inexpensive, easy-to-build solar water-heating system, the integral passive solar water heater (IPSWH, pronounced ips-wah) is a dream come true.
Integral passive solar water heaters, also called batch heaters, are the simplest of the passive systems, and their reliability and independence from external power lead to long-term production at a very low cost.
Passive solar water heaters are cost-effective in a wide range of climates, but are easiest to build and operate in warm climates.
There are several low-cost, low-tech devices that anyone can use, such as an integral passive solar water heater which is basically a tank in a box.