Refrigeration – Refrigeration producer
Patent
1986-11-17
1988-09-13
Capossela, Ronald C.
Refrigeration
Refrigeration producer
622383, 62476, F25B 100
Patent
active
047700050
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a plant having a process portion, which requires input heat energy at at least one input heat temperature range and from which output heat energy at at least one output heat temperature range, which is lower than the input heat temperature range, must be removed, and having a heat supply portion which includes an absorber arrangement and a supply of operating energy.
Many processes, in particular substance separation processes, require input heat energy at a particular temperature or temperatures and release output heat or waste heat at a lower temperature or temperatures. Often, for instance in distillation processes such as desalination of sea water, the range between the input temperature and the output heat temperature is relatively narrow, frequently only a few Kelvin, so that discarding the waste heat would be extremely uneconomical. A known method for useful recovery of the waste heat in distillation processes is known as exhaust vapor compression; that is, the steam produced in distillation is compressed by means of a mechanical compressor so that it condenses at a higher temperature, and the resultant heat of condensation can be utilized as input heat. Exhaust vapor compression plants which include a heat transformer are also known (German Patent Disclosure Document No. DE-A 30 16 406). The disadvantage of exhaust vapor compression is that mechanical compressors require high-grade driving energy, are expensive to service and are quite noisy in operation.
From U.S. Pat. No. 4,402,795, it is known to supply the waste heat or output heat energy released by a substance separation plant to a heat transformer, which raises the temperature of this output heat energy enough that it can be used as input heat energy for the plant.
From U.S. Pat. No. 4,350,571, it is known to supply a substance separation plant with the heat energy it requires for operation via an absorber heat pump.
The known systems that operate with a heat transformer or a heat pump also have certain disadvantages. If a heat transformer is used, the plant must be supplied with a relatively large proportion of the operating energy it requires for its operation directly, in the form of high-grade primary operating heat energy. If a heat pump is used, on the other hand, then at otherwise comparable conditions the overall result is less-efficient utilization of the primary operating energy than if a heat transformer is used.
It is the object of the present invention to disclose a plant of the above-discussed generic type which requires only relatively little high-grade primary operating energy for its operation and releases only low-grade low-temperature waste heat, so that the thermodynamic efficiency is correspondingly high.
In a plant having a process portion which for operation requires input heat energy in at least one input heat temperature range and from which heat energy in at least one output heat temperature range, which is lower than the input heat temperature range, must be removed, and having a heat supply portion which includes an absorber arrangement and a source of operating energy, in particular a source of operating heat, this object is attained according to the invention in that the heat supply portion includes, as the absorber arrangement, a combination of a heat transformer and a heat pump furnishes the process portion with the input heat energy it requires, accepts the output heat energy from the process portion and in turn is incorporated between the operating energy source and a heat sink, which accepts from the heat supply portion waste heat in a temperature range that is lower than the output heat temperature range of the process portion.
Further developments and advantageous embodiments of the plant according to the invention are the subject of dependent claims.
With the plant according to the invention, a surprisingly high energy saving can be attained, at relatively low expense for equipment, as will be described in greater detail below.
Certain embodiments of the invention are dis
REFERENCES:
patent: 3203875 (1965-08-01), Sturtevant
patent: 4314668 (1982-02-01), Jansen et al.
patent: 4402795 (1983-09-01), Erickson
patent: 4403480 (1983-09-01), Frazen
patent: 4441332 (1984-04-01), Wilkinson
patent: 4458499 (1984-07-01), Grossman
patent: 4523635 (1985-06-01), Nishizaki et al.
patent: 4530826 (1985-07-01), Ohashi
patent: 4531374 (1985-07-01), Alefeld
LandOfFree
Plant having a heat accepting and releasing process portion and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plant having a heat accepting and releasing process portion and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plant having a heat accepting and releasing process portion and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-799739