Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices

• US 7,341,201 B2
• Filed: 05/03/2005
• Issued: 03/11/2008
• Est. Priority Date: 07/08/2003
• Status: Expired due to Fees

• Current Assignee: Daniel Stanimirovic
• Original Assignee: Daniel Stanimirovic
• Inventors: Stanimirovic, Daniel
• Primary Examiner(s): NORMAN, MARC E
• Application Number:
  US11/120,292
• Publication Number:
  US 20050258259A1
• Time in Patent Office: 1,043 Days
• Field of Search: 236/49.1, 236/49.3, 236/94, 621/86
• US Class Current: 236/49.1
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 11/74 for controlling air flow rate or air velocity
• CPC Class Codes: F24F 11/89 Arrangement or mounting of control or safety devices
• CPC Class Codes: F24F 2110/30 Velocity
• CPC Class Codes: F24F 2110/40 Pressure, e.g. wind pressure

Abstract

The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement, metering, distribution, and containment. Essentially, the scope of operation of the method and apparatus encompasses all forms of scientific and engineering measurement dealing with fluid dynamics, fluid statics, fluid mechanics, thermal dynamics, and mechanical engineering as they pertain to precise, articulated control of air-fluid distribution and delivery. The described method and apparatus offers complete, comprehensive, and correct utilization of air-fluid movers and terminal devices under unique sensor logic control, from initial lab testing stages through to equipment cataloguing, selection, design and construction of any and all air-fluid distribution systems in entirety, whereas previously there was no such cohesive, total and terminal method of control for these systems or their components.

Claims

1. An apparatus for flow-pressure control and monitoring of constant or variable volume air-fluid distribution systems, terminal devices, and prime movers comprising

a primary mover (1) with variable speed control or means of modulation (7), including metering of voltage and amperage;

means of Power Factor metering;

means of KW metering;

means of power triangle metering (P, S, Q), including phase angle display of signal modulation;

a means of measuring mover driven speed of rotation (RPM);

a means of measuring mover driver speed of rotation (RPM);

a means of measuring torque;

connecting ductwork or distribution system (5);

a cross-sectional housing with independent total, static, and velocity multi-point pressure sensors (2, 13, 14, 15) or simplified sensing probes consisting of total impact and static probes, where Vp may be derived from the deduction TP, Total Pressure−

SP, Static Pressure=Vp, Velocity Pressure and wherein a Mover Total Pressure (20) may be applied by sensing means, including a total impact single or multi-point sensor (13) at its inlet or intake;

a terminal control device (3), as with a damper or valve housing effectively fitted with total impact, static, and velocity sensors (4, 13, 14, 15) and fitted with motor control actuation;

stepper motor control allowning damper angle setting to effective radian angles against valve constants and coefficients according to damper position from fully closed to wide open flow;

a heat exchanger housing (8), its air side fitted with dry and wet bulb air temperature sensors and fluid side fitted with fluid temperature sensors in and out of the heat exchanger along with a one, two, or three-way fluid control valve (3) on its return side piping;

open ports for external inputs, zone sensors/thermostats, or other controlled sources as may be set arbitrarily;

a signal processor (9) with an input from all temperature and pressure sensors (2, 4, 13, 14, 15) and input/output to motor control (7) and damper actuation (3);

an output to a panel display monitor (6) with a Cartesian graph indicating performance curve coordinates of the mover (11), the distribution system (5), the terminal device (3), scalar and vector data;

also including BHP data as factored from current and voltage readings, Power Factor data, derived data from direct Power Factor measuring means, direct KW measuring means, or from other means to determine output power;

heat flow data from any heat exchange terminal (8).

2. A method for controlling and monitoring a mover-distribution system relationship utilizing the apparatus of claim 1 by

systematically altering the said primary mover'"'"'s slope with the said speed controller or means of modulation to change speed of mover driven rotation to modify the mover constant against the system constant as established by x/y value slope adjustment;

establishing a series or parallel slope where there are secondary movers to modify the mover constant against the system constant as by x/y value slope adjustment;

establishing a series or parallel slope where there are secondary system circuits to modify the system constant against the mover constant as by x/y value slope adjustment;

determining the primary mover'"'"'s BHP or Mover Power with calculating steps through single or three phase current reading and Power Factor data as metered from the motor powering the mover;

correcting the mover'"'"'s slope y value according to BHP or Mover Power changes;

correcting the said mover and said distribution system x/y slope values according to changes to one or the other, where one or the other is held constant when the other changes;

providing a constant reference of the said mover constant against said connecting distribution system as fitted according to system effective duct diameters per velocity and static pressures and converging or diverging angle geometry beffitting the mover to complement its total power throughput throughout said distribution system;

establishing, adjusting, and tuning total system constants throughout their full range of closure or percent of wide open flow;

establishing, adjusting, and tuning terminal valve constants throughout their full range of closure or percent of wide open flow;

deducting mover-system performance characteristics with said data as obtained from said flow sensing stations situated at the main discharge and the terminal discharge of the distribution system allowing a means for deducting mover total pressure as fully distributed and articulated throughout a distribution system;

solving mover-system unknowns through interpolative data utilizing said method of x/y coordination of mover-system relationships;

or utilizing extrapolative data with calculating steps of applicable affinity laws where data is missing or unavailable;

marking in memory previous mover-system unknowns as firmly established through said method and storing them in the said database reference provided;

monitoring and adjusting a point of system operation through interpolated data utilizing the said panel display of claim 1;

monitoring and adjusting a point of sub-system operation through interpolated data utilizing the said panel display of claim 1;

monitoring, adjusting, and tuning the leading and lagging effects of capacitance and induction in high and low voltage electrical power distribution throughout a given system utilizing the power triangulation feature and said panel display of claim 1;

monitoring, adjusting, and tuning electrical characteristics of the prime mover power output modulation against terminal device or valve angle positioning according to PHI, phase angle and signal modulation for individual terminal device 90 degree quadrants and clocking the whole system 360 degrees for a plurality of devices under modulation utilizing the power triangulation feature and said panel display of claim 1.

3. The apparatus of claim 1 wherein the signal processor (9) contains an expandable database reference

of known mover performance characteristics as established with the method of claim 2;

of known mover characteristics as established through curve plotting by way of the method of claim 2;

of known mover characteristics as established by other accepted means; and

of known mover types, sizes, and capacities.

4. The apparatus of claim 1 wherein the signal processor (9) contains an expandable database reference

of known terminal device performance characteristics as established with the method of claim 2;

of known terminal device characteristics as established through curve plotting by way of the method of claim 2;

of known terminal device characteristics as established by other accepted means; and

of known terminal device types, sizes, and ranges.

5. A method for controlling and monitoring heat exchange effectiveness against mass flow rate utilizing the apparatus of claim 1 by

monitoring heat exchange and mass flow rate with said main air monitor station, said temperature sensors, and said fluid control valve situated on the return loop of the fluid side piping;

adjusting control set points to appropriate constants for volumetric flow at specified temperatures from the said open port as set arbitrarily or as input received from said zone sensors.

6. A method for determining heat transfer in heat exchangers in accordance with claim 5, steps comprising

metering the primary mover (1) and system (5) total air volume (2) at given pressures;

metering same airflow dry and wet bulb temperatures in and out of beat exchanger;

metering heat exchanger (8) total fluid volume for standard water (GPM) or other corrected fluid volume with terminal device (3) at return piping of heat exchanger (8);

correcting for densities, specific heat, and specific gravity;

calculating the total heat exchanged from the fluid side of the heat exchanger;

calculating the final total, latent and sensible heat exchanged from the air side of heat exchanger;

and displaying the data on the user interface for observation (6).

7. A method in accordance with claim 6 for determining heat transfer and heat exchange effectiveness in energy recovery units, steps comprising

metering the supply air-fluid volume (2) at given pressures;

metering same supply with airflow dry and wet bulb temperatures;

metering the exhaust or return air-fluid volume (2) at given pressures;

metering same exhaust or return with airflow dry and wet bulb temperatures;

correcting for densities, specific heat, and specific gravity;

calculating the total mass flow rate of both air-fluid streams across heat exchange medium;

calculating the final total, latent, and sensible heat exchanged;

calculating percentage of heat exchange effectiveness expressed as a ratio;

and displaying test data results on the user interface (6).