Patent ID: 7832466
Filing Date: 2010-11-16
Classification: F24D,F25D,F28D

Abstract:
1. A water supply system for providing hot or cold water said system comprising a main water tank on a roof of a building for containing a supply of water for everyday household use and a sub-tank in the shape of a right circular cylinder of a smaller diameter than said main water tank disposed in the building, said sub-tank including a lower portion connected to said main tank for receiving water from said main tank, and said sub-tank including a wall formed of heat transferable material, a coiled tube extending around and in contact with said sub-tank multiple times, and a supply of refrigerant disposed in said tube and refrigeration means including a compressor and a condenser connected to a source of electricity for cooling said refrigerant and circulating said refrigerant through said coil to thereby cool water in said sub-tank, an outer wall surrounding said sub-tank and a heater connected to a source of electricity within said lower portion of said sub-tank for heating water in said sub-tank and a three-way switch for selecting a cooling cycle, a heating cycle or an off position in which said sub-tank includes a safety valve and a filter and a silicate disposed in said filter clearing the cooling circuit of any debris resulting from maintenance and getting rid of any humidity through the use of said silicate.