초록 ▼

A solar water heating system is provided which includes a domestic pressurized water tank with a non-pressurized solar water storage tank placed directly atop it. Because the solar loop is non-pressurized and because the fluid (water) used in said solar loop is non-toxic, a single-wall heat exchange

A solar water heating system is provided which includes a domestic pressurized water tank with a non-pressurized solar water storage tank placed directly atop it. Because the solar loop is non-pressurized and because the fluid (water) used in said solar loop is non-toxic, a single-wall heat exchanger may be used. Draindown is accomplished by the use of a vacuum relief valve which permits draindown whenever the pump in the solar loop is not active. A differential thermostat, in conjunction with a sensor at the collector and a sensor at the domestic water tank, senses temperature variation and activates the pump in the solar loop and the pump in the heat exchanger loop whenever a given temperature variation occurs. High efficiency is achieved through the proper placement of extraction and expulsion pipes in the domestic water storage tank, as well as the placement of the pumps within the center of the solar water storage tank and the use of a single-wall heat exchanger.

대표청구항 ▼

A solar water-heating system comprising: a. a domestic water storage tank having a cold-water inlet and a hot-water outlet; b. a non-pressurized solar-heated water storage tank placed directly atop said domestic water storage tank and having an open area in the center; c. a heat exchanger placed ins

A solar water-heating system comprising: a. a domestic water storage tank having a cold-water inlet and a hot-water outlet; b. a non-pressurized solar-heated water storage tank placed directly atop said domestic water storage tank and having an open area in the center; c. a heat exchanger placed inside said non-pressurized solar-heated water storage tank and connected through two pipes to said domestic water storage tank; d. first pump means for pumping heated liquid through said non-pressurized solar-heated water storage tank; e. second pump means for pumping water from said domestic water storage tank through said heat exchanger and back into said domestic water storage tank; f. a solar collector, and g. means for connecting said solar collector to said non-pressurized solar-heated water storage tank.