Self-balancing two stage heat recovery system
AssigneePenjerdel Refrigeration Co., Inc.
InventorWalter A. Hans
Life of this patent
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Abstract
A heat recovery system which can be retrofitted onto existing equipment in order to utilize otherwise wasted heat. A heat exchanger used in the heat recovery system is designed to expose a fluid to be heated to a hot heat exchange medium such that the fluid encounters a constantly increasing temperature of the heat exchange medium. The heat recovery system employs flow control devices to compensate for any pressure drops existing in the heat recovery system so as not to degrade the operation of the heat source nor a fluid system while maximizing heat recovery efficiency.
Claims23
A system for heating a fluid from heat released during the condensing of a superheated condensible heat exchange medium supplied by a source of such medium, the system comprising:
- means for conveying said fluid in a first direction from a fluid inlet downstream to a fluid outlet;
- and
- means for circulating said heat exchange medium around said conveying means in the opposite direction in a heat exchange relationship to transfer to said fluid, first, the heat of subcooling condensed heat exchange medium, second, the latent heat of said heat exchange medium, and, finally, the superheat of said heat exchange medium, whereby said heat exchange medium flows countercurrent to the flow of said fluid such that said fluid is initially exposed to the heat exchange medium at the coolest temperature thereof and is thereafter exposed to said heat exchange medium having a continuously increasing temperature until said fluid flows from said fluid outlet.
A system for heating a fluid from heat released during the condensing of a superheated condensible heat exchange medium supplied by a source of such medium, the system comprising:
- means for conveying said fluid from a fluid inlet downstream to a fluid outlet;
- and
- means for circulating said heat exchange medium around said conveying means in a heat exchange relationship to transfer to said fluid, first, the heat of subcooling condensed heat exchange medium, second, the latent heat of said heat exchange medium, and finally, the superheat of said heat exchange medium, said circulating means comprising a vessel enclosing said conveying means from said fluid inlet to said fluid outlet, said vessel including a medium inlet proximate said fluid outlet for receiving said heat exchange medium prior to said heat exchange with said fluid, and a medium outlet upstream of said fluid outlet for discharging said heat exchange medium from said vessel after said heat exchange with said fluid, the temperature of said heat exchange medium being higher at said medium inlet than at said medium outlet;
- and
- means for directing said heat exchange medium flow between said medium inlet and said medium outlet.
A system for heating a fluid with heat released during the cooling of a superheated heat exchange medium received from a source of the medium comprising:
- means for conveying said fluid from a fluid inlet downstream to a fluid outlet;
- and
- means for circulating said heat exchange medium around said conveying means in a heat exchange relationship to expose said conveying means first to the latent heat of said heat exchange medium and then to the superheat of the said heat exhange medium, said circulating means comprising:
- a vessel enclosing said conveying means from said fluid inlet to said fluid outlet, said vessel having a medium inlet proximate said fluid outlet for receiving said medium prior to heat exchange with said fluid;
- a medium outlet upstream of said fluid outlet for discharging said medium after heat exchange with said fluid, the temperature of said medium being higher at said medium inlet than at said medium outlet;
- and
- means for directing said condensible medium to flow from said medium inlet to said medium outlet.
Dependencies are inferred from the claim text.