WO2000016055A1 - Surveillance d'energie cyclique - Google Patents

Surveillance d'energie cyclique Download PDF

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Publication number
WO2000016055A1
WO2000016055A1 PCT/US1999/020817 US9920817W WO0016055A1 WO 2000016055 A1 WO2000016055 A1 WO 2000016055A1 US 9920817 W US9920817 W US 9920817W WO 0016055 A1 WO0016055 A1 WO 0016055A1
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WO
WIPO (PCT)
Prior art keywords
closed
energy
dissipated
calculating
pumped
Prior art date
Application number
PCT/US1999/020817
Other languages
English (en)
Inventor
Michael Joseph Gilbert Polonyi
Original Assignee
Michael Joseph Gilbert Polonyi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michael Joseph Gilbert Polonyi filed Critical Michael Joseph Gilbert Polonyi
Publication of WO2000016055A1 publication Critical patent/WO2000016055A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity

Definitions

  • This invention relates to a method to measure energy output of heating sources such as a furnace, or cooling sources such as a refrigeration compressor through measurement at regular intervals of closed system temperatures and elapsed time. These energy sources shall start and stop at regular intervals.
  • Fig. 1 shows a computational sequence, i.e., a flow chart, in which the process variable measurements and energy calculations take place.
  • Fig. 2 shows how the temperature changes over time in a system controlled by the ambient temperature of a medium and by the starting and stopping of an energy source. It is referred to as "System Temperature Cycle.”
  • Fig. 3 shows a typical temperature control system installation diagram, with two energy sources, a void referred to as "closed-system", temperature transducers, a general purpose data processor referred to as CEM, a display and an optional alarm interface.
  • Closed-system a volume, a closed-space or a solid object to or from which no mass is being added or removed, respectively.
  • CEM a general purposed data processor of known type, capable of:
  • a method to continuously monitor cycling closed-system energy sources is
  • FIG. 1 Computational Sequence (software)
  • a Cycling Energy Meter is a computational sequence, FIG.l, executed by a data processor of known type, that calculates the exchange of energy in and out of a closed-system from temperatures measurements, thereby allowing supervision of a controlled energy source while in service. All necessary external variables are provided from of system temperature sensors and energy source start and stop signals.
  • Step 1 Start - Initialize Registers, is the first step required when turning a data processor on.
  • Step 2 Wait for Dissipation Stage, indicates that the sequence should wait for the system temperature to move in its 'natural' direction. This could be up or down, depending on the type of energy source. If the energy source is of the cooling type, the temperature will move up after the source shuts down, and vice-versa.
  • Step 3 Energy Source stops. Dissipation Stage begins and indicates a signal is received confirming this event.
  • Step 4 Read System Temperatures, TO. Set Time Register to 0, indicates the commencement of the temperatures rate-of-change measurement.
  • Step 5 Wait for Pump up Stage (Pumping starts when Energy Source starts) indicates the interval that comprehends the measurements of step 4.
  • Step 7 Read System Temperatures TL, and elapsed time, tL, records the elapsed time and new pressure.
  • Step 8 Calculate the Energy loss EL. Store EL in a register. Display EL, indicates that the system energy loss can now be calculated and displayed.
  • Step 9 Wait for Dissipation Stage, indicates the time interval while the energy source is engaged.
  • Step 10 Energy Source stops. Dissipation Stage begins, reflects that a signal was received confirming this event.
  • Step 11 Read System Temperatures TU, and elapsed time (t ⁇ -tL), records the duration of the pump up stage and the new temperatures.
  • Step 12 Calculate the Energy added EA. Store EA in a register. Display
  • EA+EL Energy added by Source
  • the temperature rate-of-change will be clocked at regular intervals and multiplied by the system mass and specific heat. This calculation provides the resultant amount of heat entering or leaving the system, depending if the temperature is increasing or decreasing, respectively.
  • FIG. 3 Typical elements, (Hardware)
  • a typical Cycling Energy Meter will consist of the following elements: a general data processor of known type able of (a) performing additions, subtractions, multiplication and division; (b) accepting analog type inputs from temperature transducers; (c) accepting digital type inputs from an energy source(s) start and stop signals; (d) measuring time intervals; (e) storing calculations, constants and states in a memory designated area; (f) displaying and conveying results.
  • FIG. 2 Preferred Embodiment - Operation
  • Measuring the temperature change while the energy source is turned off allows calculation of the amount of energy the system dissipates during the measurement interval. It is therefore necessary to calculate the amount of energy dissipated by the system first. This can only be done while the energy source is off. Once an energy source starts, the temperature rate-of-change will be proportional to the balance of heat entering and leaving the closed-system. This is known as the first law of thermodynamics.
  • the total amount of energy pumped by the energy source can be calculated, provided the dissipated energy rate remained constant during the whole cycle.
  • a Cycling Energy Meter consists of a digital electronic device capable of:
  • a stand alone Cycling Energy Meter will operate as shown in FIG.l CEM as part of a system control center - Description
  • Cycling Energy Metering lends itself readily to be absorbed as part of centralized or distributed control systems, as found in major industrial plants, power, chemical and commercial Heating Ventilating and Air Conditioning plants.
  • the required temperature signals and optional energy source start and stop signals may already be in the system. In this case, only the necessary program sequence, algorithms and means of display shall be added.
  • the Cycling Energy Metering operation as part of a system control center shall be as shown in FIG. 1
  • Cycling Energy Metering can adopt many embodiments, e.g., as a stand-alone digital electronic instrument with a suitable display, or connected to and part of a major control system.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Temperature (AREA)

Abstract

L'invention concerne un procédé permettant de surveiller en continu des sources d'énergie en système fermé du type cyclique, notamment des compresseurs de réfrigération et des fours, au moyen de mesures de température et de temps. Ce procédé permet de mesurer (a) la consommation moyenne d'énergie d'un système fermé, et (b) l'efficacité des sources d'énergie associées. Pour que ce procédé fonctionne de manière satisfaisante, la sortie de la source d'énergie ne doit pas dépasser la charge thermique qui doit rester constante dans l'intervalle de mesure.
PCT/US1999/020817 1998-09-14 1999-09-09 Surveillance d'energie cyclique WO2000016055A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15264098A 1998-09-14 1998-09-14
US09/152,640 1998-09-14

Publications (1)

Publication Number Publication Date
WO2000016055A1 true WO2000016055A1 (fr) 2000-03-23

Family

ID=22543765

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/020817 WO2000016055A1 (fr) 1998-09-14 1999-09-09 Surveillance d'energie cyclique

Country Status (1)

Country Link
WO (1) WO2000016055A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408870A (en) * 1993-11-08 1995-04-25 Chrysler Corporation Method for detecting the load on an internal combustion engine
US5729474A (en) * 1994-12-09 1998-03-17 Excel Energy Technologies, Ltd. Method of anticipating potential HVAC failure
US5747684A (en) * 1996-07-26 1998-05-05 Siemens Automotive Corporation Method and apparatus for accurately determining opening and closing times for automotive fuel injectors
US5811669A (en) * 1997-02-20 1998-09-22 Rodolfo Esteban Polonyi Cycling compressor performance metering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408870A (en) * 1993-11-08 1995-04-25 Chrysler Corporation Method for detecting the load on an internal combustion engine
US5729474A (en) * 1994-12-09 1998-03-17 Excel Energy Technologies, Ltd. Method of anticipating potential HVAC failure
US5747684A (en) * 1996-07-26 1998-05-05 Siemens Automotive Corporation Method and apparatus for accurately determining opening and closing times for automotive fuel injectors
US5811669A (en) * 1997-02-20 1998-09-22 Rodolfo Esteban Polonyi Cycling compressor performance metering

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