초록 ▼

A forced hot-water heating system in which sensible and latent heat remaining in flue gases after contact with a primary heat exchanger is recycled into incoming cold air by a second heat exchanger. The heater, humidified intake air is then directed to a fuel burner, and reduces the amount of fuel n

A forced hot-water heating system in which sensible and latent heat remaining in flue gases after contact with a primary heat exchanger is recycled into incoming cold air by a second heat exchanger. The heater, humidified intake air is then directed to a fuel burner, and reduces the amount of fuel necessary to achieve a given amount of heat exchange at the primary heat exchanger at normal operating return-water temperatures.

대표청구항 ▼

A self-balancing, forced hot-water heating system wherein sensible and latent heat from exhaust gases is recycled into incoming air, said system comprising: a. a burner for burning fuel in a stream of incoming air; b. a first heat exchanger for transferring heat from the combustion products of said

A self-balancing, forced hot-water heating system wherein sensible and latent heat from exhaust gases is recycled into incoming air, said system comprising: a. a burner for burning fuel in a stream of incoming air; b. a first heat exchanger for transferring heat from the combustion products of said burner to a water loop circulating through the space to be heated; c. a second heat exchanger disposed downstream from said first heat exchanger with respect to the flow of said combustion products, for transferring additional heat from said combustion products to a second water loop while maintaining a physical barrier therebetween; d. evaporative air-heating and water-cooling means for transferring heat from said second water loop to the incoming air; e. means for conducting the incoming air from said evaporative water-cooling and air-heating means to said burner; f. a sump for collecting unevaporated water from said evaporative water-cooling and air-heating means; and g. pumping means for directing water from said sump to said second heat-exchange means and thence to said evaporative water-cooling and air-heating means.