Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent
1981-09-21
1984-06-19
Yeung, J. C.
Stoves and furnaces
Tool having fluid fuel burner
Curling iron
126435, 126437, 47 17, F24J 302
Patent
active
044548621
ABSTRACT:
A heat exchange apparatus which utilizes the solar heat, hot spring water or underground water comprises a cylindrical main body, an internal cylinder placed in the main body, a blower provided in an upper part of the internal cylinder, an air intake, a number of radially arranged air exhaust tubes, ring shaped upper and lower heat exchange compartments, and chambers formed between heat exchange compartments, on and under the upper and lower heat exchange compartment, upper and lower chambers are connected by coil tubes placed in heat exchange compartments, the outer coil tubes and inner coil tubes are successively connected so that each of connected coil tubes has the same overall length, which improves efficiency of heat exchange between air and water which are caused to move in a counterflow fashion.
Such a heat exchange apparatus or its modification is utilized in a warmer apparatus for horticulture facilities utilizing solar heat comprising a sensor device provided in a greenhouse to detect the greenhouse temperature, a heat exchange device of a water-air counter-flow type functioning to collect and discharge heat provided with a control unit regulating various devices, a circulating pump and linked heat storage tanks serving as heat stocking means with a change-over valve to change the flow of water and sensors to detect water temperature are provided to pipings connecting said heat exchange device and heat storage tanks.
REFERENCES:
patent: 4289116 (1981-09-01), Williams
patent: 4291674 (1981-09-01), Comte et al.
patent: 4313420 (1982-02-01), Poeschl
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