초록 ▼

A water supply system for a building provides extraction of radon from the water using a hot water tank which is supplied with cold inlet water via a float valve with the tank closed apart from hot water outlet and a vent to the atmosphere of sufficient size to allow escape of gases coming out of so

A water supply system for a building provides extraction of radon from the water using a hot water tank which is supplied with cold inlet water via a float valve with the tank closed apart from hot water outlet and a vent to the atmosphere of sufficient size to allow escape of gases coming out of solution from the water in the tank. The water is heated to a temperature preferably above the desired temperature and then recooled in a heat exchanger cooperating with the cold inlet. The heat exchanger can supply both heated water and cooled water from the water extracted from the hot tank. This technique extracts up to 90% of the radon with very little additional equipment of energy costs.

대표청구항 ▼

Apparatus for supplying water for use in a building comprising a substantially closed tank, a water inlet line into the tank, level sensing means for determining the level of water in the tank, valve means in said inlet line actuated by said level sensing means for maintaining the level above a pred

Apparatus for supplying water for use in a building comprising a substantially closed tank, a water inlet line into the tank, level sensing means for determining the level of water in the tank, valve means in said inlet line actuated by said level sensing means for maintaining the level above a predetermined minimum and below a predetermined maximum, heating means in the tank for heating the water, thermostat means for controlling said heating means so as to retain the temperature of the water below a boiling temperature, a hot water outlet line and vent means communicating with the tank above the maximum level and arranged to communicate with the atmosphere exteriorally of the building so as to release gases in the tank above said water level to atmosphere and so as to maintain pressure in said tank at atmospheric pressure.