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NO20170545A1 - Offshore hydroelectric powerplant - Google Patents

Offshore hydroelectric powerplant Download PDF

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Publication number
NO20170545A1
NO20170545A1 NO20170545A NO20170545A NO20170545A1 NO 20170545 A1 NO20170545 A1 NO 20170545A1 NO 20170545 A NO20170545 A NO 20170545A NO 20170545 A NO20170545 A NO 20170545A NO 20170545 A1 NO20170545 A1 NO 20170545A1
Authority
NO
Norway
Prior art keywords
figur
onshore
pipe
function
air compressors
Prior art date
Application number
NO20170545A
Other languages
Norwegian (no)
Inventor
Eiric Skaaren
Original Assignee
Eiric Skaaren
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 Eiric Skaaren filed Critical Eiric Skaaren
Priority to NO20170545A priority Critical patent/NO20170545A1/en
Publication of NO20170545A1 publication Critical patent/NO20170545A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10—Submerged units incorporating electric generators or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention relates to cost efficient ways to lift seawater to extreme heights, with the intention to produce electricity. To do so, we will use pressure 1200 meters below the seabed and introduce compressed air. When we introduce air at these extreme depths through air compressors, the seawater has no other option to go upwards in the tube.

Description

Functional description pipe sizing calculation sheet  Functional description pipe sizing calculation sheet

Client:    Hydroelectric Corporation  Client:    Hydroelectric Corporation

Written by:  Hammersgård Rådgivning AS  Written by:  Hammersgård Rådgivning AS

Introduction  Hydroelectric Corporation has involved Hammersgård Rådgivning AS, a Norwegian based technical  consultant, to support Hydroelectric Corporation during the feasibility study for an air lift pump. For  more details on this study, please see ref. 1.    This functional description is a technical document to support the understanding of the pipe sizing  calculation sheet (ref. 2) that was developed for this study works. Hammersgård Rådgivning AS  developed this calculation sheet, but the IR‐rights are fully owned by Hydroelectric Corporation.    The pipe sizing calculation tool has two “layers” of fuctions. The first is the user interface‐layer where the  engineer easily could modify various parameters such as pipe and venturi (i.e. pipe mid section) size  parameters such as length and diameter, air flow, water flow etc. The second layer is a macro layer. In  the macro‐layer a multiple of functions and calculations are running and sending results back to the first  layer where the results are presented and used for further calculations.  This functional description will focus on this second macro level.  Introduction Hydroelectric Corporation has involved Hammersgård Rådgivning AS, a Norwegian based technical consultant, to support Hydroelectric Corporation during the feasibility study for an air lift pump. For more details on this study, please see ref. 1. This functional description is a technical document to support the understanding of the pipe sizing calculation sheet (ref. 2) that was developed for this study works. Hammersgård Rådgivning AS developed this calculation sheet, but the IR rights are fully owned by Hydroelectric Corporation. The pipe sizing calculation tool has two “layers” of functions. The first is the user interface layer where the engineer could easily modify various parameters such as pipe and venturi (i.e. pipe mid section) size parameters such as length and diameter, air flow, water flow etc. The second layer is a macro layer. In the macro layer a multiple of functions and calculations are running and sending results back to the first layer where the results are presented and used for further calculations. This functional description will focus on this second macro level.

Interface between layer 1 and 2  The excel spreadsheet (ref. 2) is using 3 different macro functions in the “Pressure drop lower”,  “Pressure drop mid” and “Pressure drop upper” sheets. All the sheets are using the same 3 functions.  The functions are:    Interface between layer 1 and 2 The Excel spreadsheet (ref. 2) is using 3 different macro functions in the “Pressure drop lower”, “Pressure drop mid” and “Pressure drop upper” sheets. All the sheets are using the same 3 functions. The functions are:

  NReSI  NReSI

FrictionSI  FrictionSI

  PDsi  PDsi

Function NReSI  The NReSI‐function is calculating the Reynolds number (Re) to evaluate if the pipe flow is turbulent or  laminar. For all relevant cases the pipe flow is turbulent. The required input to this function is Flowrate  (kg/h), viscosity (mPa‐s) and pipe diameter (mm). The returning value is the nondimensional Reynolds  number.    Function NReSI The NReSI function is calculating the Reynolds number (Re) to evaluate if the pipe flow is turbulent or laminar. For all relevant cases the pipe flow is turbulent. The required input to this function is Flowrate (kg/h), viscosity (mPa-s) and pipe diameter (mm). The returning value is the nondimensional Reynolds number.

Function FrictionSI  The FrictionSI‐function is calculating the Darcy Friction factor, a factor that is further used to evaluate the  pressure drop. The required input to this function is the pipe surface roughness (m), Raynolds number  (Re) and pipe diameter (m). The returning value is the nondimensional Darcy Friction factor.    Function PDsi  The PDsi‐function is returning the pipe segment outlet pressure based on the mass flow rate, inlet  pressure, pipe diameter, pipe length, fluid density and the darcy friction factor.    Function FrictionSI The FrictionSI function is calculating the Darcy Friction factor, a factor that is further used to evaluate the pressure drop. The required input to this function is the pipe surface roughness (m), Raynold's number (Re) and pipe diameter (m). The returning value is the nondimensional Darcy Friction factor. Function PDsi The PDsi function is returning the pipe segment outlet pressure based on the mass flow rate, inlet pressure, pipe diameter, pipe length, fluid density and the Darcy friction factor.

References  References

1. Feasibility report – Verification that it is possible to use air compressors to push water upwards in a 400 meter vertical pipe. Doc. Nr. 02‐2016‐TECH‐01. Hammersgård Rådgivning AS, Desember 2016.  1. Feasibility report – Verification that it is possible to use air compressors to push water upwards in a 400 meter vertical pipe. Doc. No. 02‐2016‐TECH‐01. Hammersgård Rådgivning AS, December 2016.

2. Pipe sizing. Doc. Nr. 02‐2016‐TECH‐02. Hammersgård Rådgivning AS, Desember 2016 2. Pipe sizing. Doc. No. 02‐2016‐TECH‐02. Hammersgård Rådgivning AS, December 2016

Claims (1)

PATENT CLAIM
1. SYSTEM THAT PRODUCES ELECTRICITY OFFSHORE THROUGH A FIXED INSTALLATION (Figur 1), INCLUDING A MINIMUM OF TWO WATER TURBINES AND TWO GENERATORS (Figur 2), ONE HIGH WOLTAGE DUAL PURPOSE SEACABLE AND ONE CONTROL CENTRE ONSHORE, (Figur 3), AND 1200 METER DEEP TUBES WHERE WATER IS PUSHED UPWARDS BY USING AIR COMPRESSORS (Figur 4).
WHEREOF THE SYSTEM IS CHARACTERIZED WITH:
- OPERATION TROUGH ELECTRICITY FROM THE ONSHORE GRID,
- THE ONSHORE CONTROL CENTRE OPERATE THE AIR COMPRESSORS, - WHEROF ALL ELECTRICITY GENERATED THROUGH THE WATER TURBINES AND GENERATORS ARE TRANSPORTED TO THE ONSHORE GRID
NO20170545A 2017-04-03 2017-04-03 Offshore hydroelectric powerplant NO20170545A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO20170545A NO20170545A1 (en) 2017-04-03 2017-04-03 Offshore hydroelectric powerplant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20170545A NO20170545A1 (en) 2017-04-03 2017-04-03 Offshore hydroelectric powerplant

Publications (1)

Publication Number Publication Date
NO20170545A1 true NO20170545A1 (en) 2018-10-04

Family

ID=65758866

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20170545A NO20170545A1 (en) 2017-04-03 2017-04-03 Offshore hydroelectric powerplant

Country Status (1)

Country Link
NO (1) NO20170545A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012091336A2 (en) * 2010-12-30 2012-07-05 Samsung C&T Corporation Facilities for offshore liquefied natural gas floating storage with jack-up platform regasification unit
WO2013163979A2 (en) * 2012-05-01 2013-11-07 Siegfried Sumser Off-shore pumped-storage power plant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012091336A2 (en) * 2010-12-30 2012-07-05 Samsung C&T Corporation Facilities for offshore liquefied natural gas floating storage with jack-up platform regasification unit
WO2013163979A2 (en) * 2012-05-01 2013-11-07 Siegfried Sumser Off-shore pumped-storage power plant

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"The Energy Island: A Gigantic Offshore Battery?", ecogeek.org, 2007-10-02, Dated: 01.01.0001 *
"MIT’s Innovative Floating Wind Energy Storage Technology", cleantechnica.com, 2013-04-30, Dated: 01.01.0001 *

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